android.os.FileUriExposedException

最新推荐文章于 2022-02-08 09:34:23 发布

转载最新推荐文章于 2022-02-08 09:34:23 发布 · 512 阅读

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本文提供了针对Android N系统中拍照启动时报错的问题解决方案。通过调整拍照功能实现方式，包括使用FileProvider和ContentResolver来避免异常，并确保应用在不同Android版本上都能正常运行。

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在华为拍照启动时报的异常下面时bugly提供的解决方法但是我自己在别的页面也是用拍照没有问题所以改成了自己的方法

解决方案

因为buildsdk是>=24,所以调用Uri.fromFile时保错，解决方法：

在application的onCreate里:
StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
StrictMode.setVmPolicy(builder.build());
builder.detectFileUriExposure()

SDK>24 和<24的解决方案
public static void openFile(Context context, File file) {
        Intent intent = new Intent();
        intent.setAction(android.content.Intent.ACTION_VIEW);
        Uri uri;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            intent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            Uri contentUri = FileProvider.getUriForFile(context,
                    context.getApplicationContext().getPackageName() + ".provider",
                    file);
            intent.setDataAndType(contentUri, "application/vnd.android.package-archive");
        } else {
            uri = Uri.fromFile(file);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            intent.setDataAndType(uri, "application/vnd.android.package-archive");
        }
        context.startActivity(intent);
    }


<------------------------------分割线----------------------------->
*****************************************************************************
***为Android N调用相机时崩溃提供一种解决方法，亲测有效***
***其中 savePath 为临时保存的路径，tempFileName为拍照 ***
***后存储的照片名称。                                                           ***
************************************************************By JayGoo ***
*******************************************************************************
 /**
     * 从拍照获取图片
     */
    public void camera() {
        Intent intent = null;
        // 判断存储卡是否可以用，可用进行存储

        if (StorageUtils.hasSdcard()) {
            //设定拍照存放到自己指定的目录,可以先建好
            File file = new File(savePath);
            if(!file.exists()){
                file.mkdirs();
            }
            Uri pictureUri;
            File pictureFile = new File(savePath, tempFileName);

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                ContentValues contentValues = new ContentValues(1);
                contentValues.put(MediaStore.Images.Media.DATA, pictureFile.getAbsolutePath());
                pictureUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,contentValues);
            }else {
                intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                pictureUri = Uri.fromFile(pictureFile);
            }
            if (intent != null) {
                intent.putExtra(MediaStore.EXTRA_OUTPUT,
                        pictureUri);
                startActivityForResult(intent, 1);
            }
        }
    }

<------------------------------分割线----------------------------->
在Android N 安装apk文件时,也会报此错误,解决办法如下:
http://www.jianshu.com/p/577816c3ce93  (By Trojx)

之前使用的方法

这是修改前的代码

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
        String currentPhotoName = System.currentTimeMillis() + ".jpg";
        File dir = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/zpay/");
        File out = new File(dir, currentPhotoName);
        PreferencesUtils.getInstance(this).put("REQUEST_PHOTO", out.getAbsolutePath());
        Uri uri = Uri.fromFile(out);// 这个方法在华为中报了异常
        intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
//        intent.putExtra(MediaStore.Images.Media.ORIENTATION, 180);
        startActivityForResult(intent, REQUEST_PHOTO);

后修改为

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//        intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
        SimpleDateFormat timeStampFormat = new SimpleDateFormat("yyyyMMddHHmmss");
        String filename = timeStampFormat.format(new Date());
        ContentValues values = new ContentValues();
        values.put(MediaStore.Images.Media.TITLE, filename);

        Uri uri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);

        PreferencesUtils.getInstance(this).put("REQUEST_PHOTO", NewBinderActivity.getPath(FeedbackActivity.this, uri));


getpath方法

@SuppressLint("NewApi")
public static String getPath(final Context context, final Uri uri) {

    final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
    // DocumentProvider
    if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
        // ExternalStorageProvider
        if (isExternalStorageDocument(uri)) {
            final String docId = DocumentsContract.getDocumentId(uri);
            final String[] split = docId.split(":");
            final String type = split[0];
            if ("primary".equalsIgnoreCase(type)) {
                return Environment.getExternalStorageDirectory() + "/" + split[1];
            }
        }
        // DownloadsProvider
        else if (isDownloadsDocument(uri)) {
            final String id = DocumentsContract.getDocumentId(uri);
            final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"),
                    Long.valueOf(id));
            return getDataColumn(context, contentUri, null, null);
        }
        // MediaProvider
        else if (isMediaDocument(uri)) {
            final String docId = DocumentsContract.getDocumentId(uri);
            final String[] split = docId.split(":");
            final String type = split[0];
            Uri contentUri = null;
            if ("image".equals(type)) {
                contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
            } else if ("video".equals(type)) {
                contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
            } else if ("audio".equals(type)) {
                contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
            }
            final String selection = "_id=?";
            final String[] selectionArgs = new String[]{split[1]};

            return getDataColumn(context, contentUri, selection, selectionArgs);
        }
    }
    // MediaStore (and general)
    else if ("content".equalsIgnoreCase(uri.getScheme())) {
        // Return the remote address
        if (isGooglePhotosUri(uri))
            return uri.getLastPathSegment();
        return getDataColumn(context, uri, null, null);
    }
    // File
    else if ("file".equalsIgnoreCase(uri.getScheme())) {
        return uri.getPath();
    }
    return null;
}

public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
    Cursor cursor = null;
    final String column = "_data";
    final String[] projection = {column};

    try {
        cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
        if (cursor != null && cursor.moveToFirst()) {
            final int index = cursor.getColumnIndexOrThrow(column);
            return cursor.getString(index);
        }
    } finally {
        if (cursor != null)
            cursor.close();
    }
    return null;
}

/**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is ExternalStorageProvider.
 */

public static boolean isExternalStorageDocument(Uri uri) {
    return "com.android.externalstorage.documents".equals(uri.getAuthority());
}

/**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is DownloadsProvider.
 */
public static boolean isDownloadsDocument(Uri uri) {
    return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}

/**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is MediaProvider.
 */
public static boolean isMediaDocument(Uri uri) {
    return "com.android.providers.media.documents".equals(uri.getAuthority());
}

/**
 * @param uri The Uri to check.
 * @return Whether the Uri authority is Google Photos.
 */
public static boolean isGooglePhotosUri(Uri uri) {
    return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}