Question

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。我应该怎么做才能防止这种情况？

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<Object, Void, Bitmap> {

    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);
        }
    }
}

Stacktrace：

致命异常：AsyncTask＃17 java.lang.RuntimeException：执行doInBackground（）时发生错误在android.os.AsyncTask $ 3.done（AsyncTask.java:200） at java.util.concurrent.FutureTask $ Sync.innerSetException（FutureTask.java:274） at java.util.concurrent.FutureTask.setException（FutureTask.java:125） at java.util.concurrent.FutureTask $ Sync.innerRun（FutureTask.java:308）在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）在java.lang.Thread.run（Thread.java:1019）引起：java.lang.OutOfMemoryError：位图大小超过VM预算在android.graphics.BitmapFactory.nativeDecodeStream（本机方法）在android.graphics.BitmapFactory.decodeStream（BitmapFactory.java:470）在android.graphics.BitmapFactory.decodeResourceStream（BitmapFactory.java:336）在android.graphics.drawable.Drawable.createFromResourceStream（Drawable.java:697）在android.graphics.drawable.Drawable.createFromStream（Drawable.java:657）在com.tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.fetchDrawable（ViewArcFragment.java:436）在com.tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.doInBackground（ViewArcFragment.java:411） at com.tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.doInBackground（ViewArcFragment.java:401）在android.os.AsyncTask $ 2.call（AsyncTask.java:185） at java.util.concurrent.FutureTask $ Sync.innerRun（FutureTask.java:306）在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）在java.lang.Thread.run（Thread.java:1019） 09-03 04：15：11.868 1729-1794 / com.tornado.docbao24h E / AndroidRuntime：致命异常：AsyncTask＃18 java.lang.RuntimeException：执行doInBackground（）时发生错误在android.os.AsyncTask $ 3.done（AsyncTask.java:200） at java.util.concurrent.FutureTask $ Sync.innerSetException（FutureTask.java:274） at java.util.concurrent.FutureTask.setException（FutureTask.java:125） at java.util.concurrent.FutureTask $ Sync.innerRun（FutureTask.java:308）在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）在java.lang.Thread.run（Thread.java:1019）引起：java.lang.OutOfMemoryError：位图大小超过VM预算在android.graphics.BitmapFactory.nativeDecodeStream（本机方法）在android.graphics.BitmapFactory.decodeStream（BitmapFactory.java:470）在android.graphics.BitmapFactory.decodeResourceStream（BitmapFactory.java:336）在android.graphics.drawable.Drawable.createFromResourceStream（Drawable.java:697）在android.graphics.drawable.Drawable.createFromStream（Drawable.java:657）在com.tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.fetchDrawable（ViewArcFragment.java:436）在com.tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.doInBackground（ViewArcFragment.java:411） at com.tornado.docbao24h.ui.ViewArcFragment $ URLImageParser $ ImageGetterAsyncTask.doInBackground（ViewArcFragment.java:401）在android.os.AsyncTask $ 2.call（AsyncTask.java:185） at java.util.concurrent.FutureTask $ Sync.innerRun（FutureTask.java:306）在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）在java.lang.Thread.run（Thread.java:1019）

Android Textview显示带有许多图片的html会导致内存不足异常

0 个答案: