android html显示异常,Android Textview显示带有许多图像的html会导致内存不足异常-优快云博客

这篇博客讨论了在Android应用中使用ImageGetter加载HTML图片时遇到的内存溢出问题。当图片数量过多或单张图片尺寸过大时，会导致OutOfMemoryError。作者提供了自定义的ImageGetter和AsyncTask实现，但仍然遇到了问题。解决方案可能包括使用内存管理最佳实践，如使用BitmapOptions设置缩放选项，避免加载全分辨率的图片，或者使用像Picasso这样的库来更有效地加载和缓存图片。

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我正在使用带有ImageGetter的Textview来显示带图像的html . 问题是如果因为位图占用太多内存而有很多图像我将面临内存问题 . 我该怎么做才能防止这种情况发生？

这是我的ImageGetter代码：

private class ImageGetter implements Html.ImageGetter {

@Override

public Drawable getDrawable(String source) {

LevelListDrawable d = new LevelListDrawable();

Drawable empty = getResources().getDrawable(R.drawable.indicator_loading);

d.addLevel(0, 0, empty);

d.setBounds((size.x - size.x/5) / 2, 0, size.x/5, size.x/5);

new LoadImage().execute(source, d);

return d;

}

};

class LoadImage extends AsyncTask {

private LevelListDrawable mDrawable;

@Override

protected Bitmap doInBackground(Object... params) {

String source = (String) params[0];

mDrawable = (LevelListDrawable) params[1];

try {

return picasso.load(Uri.parse(source)).get();

} catch (IOException e) {

e.printStackTrace();

}

return null;

}

@Override

protected void onPostExecute(Bitmap bitmap) {

if (bitmap != null) {

if (bitmap.getWidth() < 50) {

return;

}

BitmapDrawable d = new BitmapDrawable(resources, bitmap);

mDrawable.addLevel(1, 1, d);

int width = size.x * 90 / 100;

int height = bitmap.getHeight() * width / bitmap.getWidth();

mDrawable.setBounds((size.x - width) / 2, 0, width, height);

mDrawable.setLevel(1);

CharSequence t = textView.getText();

textView.setText(t);

}

堆栈跟踪：

致命异常：AsyncTask＃17 java.lang.RuntimeException：在android.os.AsyncTask $ 3.done(AsyncTask.java:200)上执行doInBackground()时发生错误java.util.concurrent.FutureTask $ Sync.innerSetException( FutureTask.java:274)java.util.concurrent.FutureTask的java.util.concurrent.FutureTask.setException(FutureTask.java:125)java.util.concurrent.FutureTask的$ Sync.innerRun(FutureTask.java：308) .run(FutureTask.java:138)java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)java.lang上的java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:581) . Thread.run(Thread.java:1019)引起：java.lang.OutOfMemoryError：位图大小超过android.graphics.BitmapFactory.nativeDecodeStream(Native Method)的android预算，位于android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:470) )android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:336)在android.graphics.drawable.Drawable.createFromResourceStream(Dr awable.java:697)在com.tornado的com.tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.fetchDrawable(ViewArcFragment.java:436)的android.graphics.drawable.Drawable.createFromStream(Drawable.java:657) .docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.doInBackground(ViewArcFragment.java:411)at com.tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.doInBackground(ViewArcFragment.java:401)at android.os.AsyncTask $ 2 . 调用(AsyncTask.java:185)java.util.concurrent.FutureTask $ Sync.innerRun(FutureTask.java:306)at java.util.concurrent.FutureTask.run(FutureTask.java:138)at java.util.concurrent .ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)at java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:581)at java.lang.Thread.run(Thread.java:1019)09-03 04： 15：11.868 1729-1794 / com.tornado.docbao24h E / AndroidRuntime：FATAL EXCEPTION：AsyncTask＃18 java.lang.RuntimeException：执行时发生错误来自java.util.concurrent.FutureTask的android.os.AsyncTask $ 3.done(AsyncTask.java:200)中的doInBackground()$ java.util.concurrent.FutureTask.setException中的$ Sync.innerSetException(FutureTask.java:274)( FutureTask.java:125)java.util.concurrent.TutureTask $ Sync.innerRun(FutureTask.java:308)at java.util.concurrent.FutureTask.run(FutureTask.java:138)at java.util.concurrent.ThreadPoolExecutor .runWorker(ThreadPoolExecutor.java:1088)at java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:581)at java.lang.Thread.run(Thread.java:1019)引起：java.lang . OutOfMemoryError：位图大小超过android.graphics.BitmapFactory.nativeDecodeStream(Native Method)的android预算，位于android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:336)的android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:470) android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:697)在android.graphics.drawable.Drawable.createFromStream(Drawable.java:657) )com.tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.fetchDrawable(ViewArcFragment.java:436)at com.tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.doInBackground(ViewArcFragment.java:411)at com . tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.doInBackground(ViewArcFragment.java:401)at android.os.AsyncTask $ 2.call(AsyncTask.java:185)at java.util.concurrent.FutureTask $ Sync.innerRun(FutureTask .java：306)java.util.concurrent.FutureTask.run(FutureTask.java:138)java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)java.util.concurrent.ThreadPoolExecutor $ Worker . 在java.lang.Thread.run上运行(ThreadPoolExecutor.java:581)(Thread.java:1019)