图片压缩工具类

最新推荐文章于 2024-07-14 19:55:19 发布
最新推荐文章于 2024-07-14 19:55:19 发布
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<code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.io.File;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.io.FileNotFoundException;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.io.FileOutputStream;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> java.io.OutputStream;

<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.content.Context;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.database.Cursor;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.graphics.Bitmap;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.graphics.BitmapFactory;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.graphics.Bitmap.CompressFormat;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.net.Uri;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.os.Environment;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.provider.MediaStore.Images;
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">import</span> android.util.Log;

<span class="hljs-javadoc" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">/**
 * 图片压缩工具类
 * 
 *<span class="hljs-javadoctag" style="margin: 0px; padding: 0px; color: rgb(102, 0, 102); box-sizing: border-box;"> @author</span> Administrator
 * 
 */</span>
<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-class" style="margin: 0px; padding: 0px; box-sizing: border-box;"><span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="margin: 0px; padding: 0px; box-sizing: border-box; color: rgb(102, 0, 102);">ImageCompress</span> {</span>

    <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">final</span> String CONTENT = <span class="hljs-string" style="margin: 0px; padding: 0px; color: rgb(0, 136, 0); box-sizing: border-box;">"content"</span>;
    <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">final</span> String FILE = <span class="hljs-string" style="margin: 0px; padding: 0px; color: rgb(0, 136, 0); box-sizing: border-box;">"file"</span>;

    <span class="hljs-javadoc" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">/**
     * 图片压缩参数
     * 
     *<span class="hljs-javadoctag" style="margin: 0px; padding: 0px; color: rgb(102, 0, 102); box-sizing: border-box;"> @author</span> Administrator
     * 
     */</span>
    <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-class" style="margin: 0px; padding: 0px; box-sizing: border-box;"><span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="margin: 0px; padding: 0px; box-sizing: border-box; color: rgb(102, 0, 102);">CompressOptions</span> {</span>
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">final</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> DEFAULT_WIDTH = <span class="hljs-number" style="margin: 0px; padding: 0px; color: rgb(0, 102, 102); box-sizing: border-box;">400</span>;
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">final</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> DEFAULT_HEIGHT = <span class="hljs-number" style="margin: 0px; padding: 0px; color: rgb(0, 102, 102); box-sizing: border-box;">800</span>;

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> maxWidth = DEFAULT_WIDTH;
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> maxHeight = DEFAULT_HEIGHT;
        <span class="hljs-javadoc" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">/**
         * 压缩后图片保存的文件
         */</span>
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> File destFile;
        <span class="hljs-javadoc" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">/**
         * 图片压缩格式,默认为jpg格式
         */</span>
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> CompressFormat imgFormat = CompressFormat.JPEG;

        <span class="hljs-javadoc" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">/**
         * 图片压缩比例 默认为30
         */</span>
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> quality = <span class="hljs-number" style="margin: 0px; padding: 0px; color: rgb(0, 102, 102); box-sizing: border-box;">30</span>;

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> Uri uri;
    }

    <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">public</span> Bitmap <span class="hljs-title" style="margin: 0px; padding: 0px; box-sizing: border-box;">compressFromUri</span>(Context context,
            CompressOptions compressOptions) {

        <span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">// uri指向的文件路径</span>
        String filePath = getFilePath(context, compressOptions.uri);

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span> == filePath) {
            <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;
        }

        BitmapFactory.Options options = <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">new</span> BitmapFactory.Options();
        options.inJustDecodeBounds = <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">true</span>;

        Bitmap temp = BitmapFactory.decodeFile(filePath, options);

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> actualWidth = options.outWidth;
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> actualHeight = options.outHeight;

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> desiredWidth = getResizedDimension(compressOptions.maxWidth,
                compressOptions.maxHeight, actualWidth, actualHeight);
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> desiredHeight = getResizedDimension(compressOptions.maxHeight,
                compressOptions.maxWidth, actualHeight, actualWidth);

        options.inJustDecodeBounds = <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">false</span>;
        options.inSampleSize = findBestSampleSize(actualWidth, actualHeight,
                desiredWidth, desiredHeight);

        Bitmap bitmap = <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;

        Bitmap destBitmap = BitmapFactory.decodeFile(filePath, options);

        <span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">// If necessary, scale down to the maximal acceptable size.</span>
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (destBitmap.getWidth() > desiredWidth
                || destBitmap.getHeight() > desiredHeight) {
            bitmap = Bitmap.createScaledBitmap(destBitmap, desiredWidth,
                    desiredHeight, <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">true</span>);
            destBitmap.recycle();
        } <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">else</span> {
            bitmap = destBitmap;
        }

        <span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">// compress file if need</span>
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span> != compressOptions.destFile) {
            compressFile(compressOptions, bitmap);
        }

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">return</span> bitmap;
    }

    <span class="hljs-javadoc" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">/**
     * compress file from bitmap with compressOptions
     * 
     *<span class="hljs-javadoctag" style="margin: 0px; padding: 0px; color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> compressOptions
     *<span class="hljs-javadoctag" style="margin: 0px; padding: 0px; color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> bitmap
     */</span>
    <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="margin: 0px; padding: 0px; box-sizing: border-box;">compressFile</span>(CompressOptions compressOptions, Bitmap bitmap) {
        OutputStream stream = <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">try</span> {
            stream = <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">new</span> FileOutputStream(compressOptions.destFile);
        } <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">catch</span> (FileNotFoundException e) {
            Log.e(<span class="hljs-string" style="margin: 0px; padding: 0px; color: rgb(0, 136, 0); box-sizing: border-box;">"ImageCompress"</span>, e.getMessage());
        }

        bitmap.compress(compressOptions.imgFormat, compressOptions.quality,
                stream);
    }

    <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> <span class="hljs-title" style="margin: 0px; padding: 0px; box-sizing: border-box;">findBestSampleSize</span>(<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> actualWidth, <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> actualHeight,
            <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> desiredWidth, <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> desiredHeight) {
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span> wr = (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span>) actualWidth / desiredWidth;
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span> hr = (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span>) actualHeight / desiredHeight;
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span> ratio = Math.min(wr, hr);
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">float</span> n = <span class="hljs-number" style="margin: 0px; padding: 0px; color: rgb(0, 102, 102); box-sizing: border-box;">1.0</span>f;
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">while</span> ((n * <span class="hljs-number" style="margin: 0px; padding: 0px; color: rgb(0, 102, 102); box-sizing: border-box;">2</span>) <= ratio) {
            n *= <span class="hljs-number" style="margin: 0px; padding: 0px; color: rgb(0, 102, 102); box-sizing: border-box;">2</span>;
        }

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">return</span> (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span>) n;
    }

    <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> <span class="hljs-title" style="margin: 0px; padding: 0px; box-sizing: border-box;">getResizedDimension</span>(<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> maxPrimary, <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> maxSecondary,
            <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> actualPrimary, <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> actualSecondary) {
        <span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">// If no dominant value at all, just return the actual.</span>
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (maxPrimary == <span class="hljs-number" style="margin: 0px; padding: 0px; color: rgb(0, 102, 102); box-sizing: border-box;">0</span> && maxSecondary == <span class="hljs-number" style="margin: 0px; padding: 0px; color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {
            <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">return</span> actualPrimary;
        }

        <span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">// If primary is unspecified, scale primary to match secondary's scaling</span>
        <span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">// ratio.</span>
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (maxPrimary == <span class="hljs-number" style="margin: 0px; padding: 0px; color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {
            <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span> ratio = (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span>) maxSecondary / (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span>) actualSecondary;
            <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">return</span> (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span>) (actualPrimary * ratio);
        }

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (maxSecondary == <span class="hljs-number" style="margin: 0px; padding: 0px; color: rgb(0, 102, 102); box-sizing: border-box;">0</span>) {
            <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">return</span> maxPrimary;
        }

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span> ratio = (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span>) actualSecondary / (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">double</span>) actualPrimary;
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span> resized = maxPrimary;
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (resized * ratio > maxSecondary) {
            resized = (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">int</span>) (maxSecondary / ratio);
        }
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">return</span> resized;
    }

    <span class="hljs-javadoc" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">/**
     * 获取文件的路径
     * 
     *<span class="hljs-javadoctag" style="margin: 0px; padding: 0px; color: rgb(102, 0, 102); box-sizing: border-box;"> @param</span> scheme
     *<span class="hljs-javadoctag" style="margin: 0px; padding: 0px; color: rgb(102, 0, 102); box-sizing: border-box;"> @return</span>
     */</span>
    <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">private</span> String <span class="hljs-title" style="margin: 0px; padding: 0px; box-sizing: border-box;">getFilePath</span>(Context context, Uri uri) {

        String filePath = <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (CONTENT.equalsIgnoreCase(uri.getScheme())) {

            Cursor cursor = context.getContentResolver().query(uri,
                    <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">new</span> String[] { Images.Media.DATA }, <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span>, <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span>, <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span>);

            <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (<span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span> == cursor) {
                <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">null</span>;
            }

            <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">try</span> {
                <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (cursor.moveToNext()) {
                    filePath = cursor.getString(cursor
                            .getColumnIndex(Images.Media.DATA));
                }
            } <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">finally</span> {
                cursor.close();
            }
        }

        <span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">// 从文件中选择</span>
        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (FILE.equalsIgnoreCase(uri.getScheme())) {
            filePath = uri.getPath();
        }

        <span class="hljs-keyword" style="margin: 0px; padding: 0px; color: rgb(0, 0, 136); box-sizing: border-box;">return</span> filePath;
    }
}
</code><ul class="pre-numbering" style="margin: 0px; padding: 6px 0px 40px; box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">1</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">2</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">3</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">4</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">5</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">6</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">7</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">8</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">9</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">10</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">11</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">12</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">13</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">14</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">15</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">16</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">17</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">18</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">19</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">20</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">21</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">22</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">23</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">24</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">25</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">26</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">27</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">28</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">29</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">30</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">31</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">32</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">33</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">34</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">35</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">36</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">37</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">38</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">39</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">40</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">41</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">42</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">43</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">44</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">45</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">46</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">47</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">48</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">49</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">50</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">51</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">52</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">53</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">54</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">55</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">56</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">57</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">58</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">59</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">60</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">61</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">62</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">63</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">64</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">65</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">66</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">67</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">68</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">69</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">70</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">71</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">72</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">73</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">74</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">75</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">76</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">77</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">78</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">79</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">80</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">81</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">82</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">83</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">84</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">85</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">86</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">87</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">88</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">89</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">90</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">91</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">92</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">93</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">94</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">95</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">96</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">97</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">98</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">99</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">100</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">101</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">102</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">103</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">104</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">105</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">106</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">107</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">108</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">109</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">110</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">111</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">112</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">113</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">114</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">115</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">116</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">117</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">118</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">119</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">120</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">121</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">122</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">123</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">124</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">125</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">126</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">127</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">128</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">129</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">130</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">131</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">132</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">133</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">134</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">135</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">136</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">137</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">138</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">139</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">140</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">141</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">142</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">143</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">144</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">145</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">146</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">147</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">148</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">149</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">150</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">151</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">152</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">153</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">154</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">155</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">156</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">157</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">158</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">159</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">160</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">161</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">162</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">163</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">164</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">165</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">166</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">167</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">168</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">169</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">170</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">171</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">172</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">173</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">174</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">175</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">176</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">177</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">178</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">179</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">180</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">181</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">182</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">183</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">184</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">185</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">186</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">187</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">188</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">189</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">190</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">191</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">192</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">193</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">194</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">195</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">196</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">197</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">198</li><li style="margin: 0px; padding: 0px 5px; box-sizing: border-box;">199</li></ul>

调用工具类压缩图片：

<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> ImageCompress compress = new ImageCompress()<span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">;</span>
                ImageCompress<span class="hljs-preprocessor" style="margin: 0px; padding: 0px; color: rgb(68, 68, 68); box-sizing: border-box;">.CompressOptions</span> options = new ImageCompress<span class="hljs-preprocessor" style="margin: 0px; padding: 0px; color: rgb(68, 68, 68); box-sizing: border-box;">.CompressOptions</span>()<span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">;</span>
                options<span class="hljs-preprocessor" style="margin: 0px; padding: 0px; color: rgb(68, 68, 68); box-sizing: border-box;">.uri</span> = Uri<span class="hljs-preprocessor" style="margin: 0px; padding: 0px; color: rgb(68, 68, 68); box-sizing: border-box;">.fromFile</span>(new File(sourcePath))<span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">;</span>
                options<span class="hljs-preprocessor" style="margin: 0px; padding: 0px; color: rgb(68, 68, 68); box-sizing: border-box;">.maxWidth</span>=Constants<span class="hljs-preprocessor" style="margin: 0px; padding: 0px; color: rgb(68, 68, 68); box-sizing: border-box;">.RESIZEBITMAP</span>_WIDTH<span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">;</span>
                options<span class="hljs-preprocessor" style="margin: 0px; padding: 0px; color: rgb(68, 68, 68); box-sizing: border-box;">.maxHeight</span>=Constants<span class="hljs-preprocessor" style="margin: 0px; padding: 0px; color: rgb(68, 68, 68); box-sizing: border-box;">.RESIZEBITMAP</span>_HEIGHT<span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">;</span>
                Bitmap bitmap = compress<span class="hljs-preprocessor" style="margin: 0px; padding: 0px; color: rgb(68, 68, 68); box-sizing: border-box;">.compressFromUri</span>(UploadWithPhotoBaseActivity<span class="hljs-preprocessor" style="margin: 0px; padding: 0px; color: rgb(68, 68, 68); box-sizing: border-box;">.this</span>, options)<span class="hljs-comment" style="margin: 0px; padding: 0px; color: rgb(136, 0, 0); box-sizing: border-box;">;</span></code>
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图片处理依赖 压缩工具类
Android CompressImage图片压缩工具类介绍
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CompressImage是集成图片的质量压缩，像素压缩以及基于Luban算法的图片压缩三种压缩方式的工具 功能如下：    1. 质量压缩：从质量层面进行相关压缩（原图片可通过该工具压缩至小于期望大小的图片）    2. 像素压缩：设定固定的长和宽，然后进行压缩    3. 基于Luban算法的压缩： 类比微信将图片压缩至不失真的图片大小 效果图：   1. 像素压缩：从质量层面进行...
使用Java实现图片大小压缩
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文章介绍了如何使用Java实现图片大小压缩，包括从输入流读取图片、压缩图片并通过输出流返回压缩后的图片数据。我们利用Thumbnailator库进行压缩，并创建了一个Spring Boot控制器来提供RESTful接口。
一个好用的android图片压缩工具类
touch_ping的专栏
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用了很久图片压缩，之前人们一直使用google的官方图片压缩方法 final BitmapFactory.Options options = new BitmapFactory.Options(); options.inJustDecodeBounds = true; BitmapFactory.decodeResource(res, resId, options); op
Java开发中图片压缩工具Thumbnailator
ldcaws的专栏
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在java日常开发中，经常遇到对图片资源的操作需求，如压缩、缩放、旋转。目前应用系统好多采用前后端分离方式，图片资源需要进行传输，而现在手机或数码设备拍摄的图片都是高清，占用空间大，在网络传输时占用大量带宽，所以对图片的压缩就非常必要。 Thumbnailator是一个Google开源的优秀图片处理的第三方Java类库，处理效果远比Java API的好，下面尝试用很少的代码实现图片的压缩、旋转功能。...
android图片压缩工具类分享
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本文将介绍一个Android图片压缩工具类的实现，通过这个工具类，开发者可以有效地管理和压缩图片资源，防止因图片过大导致内存溢出或应用运行缓慢。 首先，工具类中的`compressImage(Bitmap image)`方法用于质量压缩...
java图片压缩工具类
08-31
Java图片压缩工具类是用于处理图像文件的一种实用程序，它可以帮助开发者将图片调整到所需的尺寸，同时保持图像质量。在Java中，我们可以使用内置的`java.awt`和`javax.imageio`包来处理图像。以下是对`ImageProcess...
python爬虫.7zpython爬虫.7z
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《证券分析》第六版是价值投资领域的经典之作，由本杰明·格雷厄姆和大卫·多德合著。本书不仅回顾了1934年首次出版时的理论框架，还结合现代金融市场进行了深入探讨。书中涵盖了从基本概念到具体应用的广泛内容，包括内在价值的概念、定量与定性分析、投资与投机的区别等。第六版新增了许多当代顶尖价值投资者的评论文章，为读者提供了宝贵的实际操作经验和市场洞见。此外，书中还详细讨论了固定收益投资、优先股和其他高级证券的选择标准，并强调了信息来源的重要性。通过对历史案例的分析，本书帮助读者理解如何在不确定的市场环境中做出明智的投资决策。
硬件开发教程.7z硬件开发教程.7z
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Thumbnailator-0.4.8：Java图片压缩工具类介绍
在讨论关于thumbnailator-0.4.8.jar包及其相关图片压缩工具类的知识点时，我们首先需要了解几个关键要素： 1. **Thumbnailator的介绍** Thumbnailator是一个Java库，用于生成和处理图像的缩略图。它旨在提供一个...
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