Question

我在主屏幕上有10张小图片，当我点击这些图片时，我可以看到大图在这个屏幕上我有一个设置为壁纸的按钮。

问题是，当我点击一些不同的图片我有outOfMemoryError，我无法修复此错误。我尝试了一些解决方案，但我认为我的问题有点不同。

public class FullImageActivity extends Activity {

        Button button1;

      @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.full_image);

           button1=(Button) findViewById(R.id.button1);

            Intent i = getIntent();
     final int position = i.getExtras().getInt("id");


        final ImageView imageView = (ImageView) findViewById(R.id.full_image_view);




            if(position==0)
            {

                imageView.setImageResource(R.drawable.image_0);




                button1.setOnClickListener(new OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        WallpaperManager myWallpaperManager 
                        = WallpaperManager.getInstance(getApplicationContext());

                        try {


                            myWallpaperManager.setResource(R.drawable.image_0);

                            Toast.makeText(
                                    getBaseContext(),
                                    "Wallpaper has been updated",
                                    Toast.LENGTH_SHORT).show();

                        } 
                        catch (IOException e) {
                            // TODO Auto-generated catch block
                            e.printStackTrace();
                        }
                    }
                });


                }

我有10个这样的位置。我的图像来自可绘制文件夹。

我试过这个解决方案，但我无法解决它。我不知道我在哪里使用它。

BitmapDrawable bitmapDrawable = ((BitmapDrawable) imageView.getDrawable());


            if (null != bitmapDrawable && bitmapDrawable.getBitmap().isRecycled()) {

                bitmapDrawable.getBitmap().recycle();    } 
                bitmapDrawable = null;

这是主要活动

public class MainActivity extends Activity {
    private GridView gridView;
    private GridViewAdapter customGridAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        gridView = (GridView) findViewById(R.id.gridView);
        customGridAdapter = new GridViewAdapter(this, R.layout.row_grid, getData());
        gridView.setAdapter(customGridAdapter);

        gridView.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View v,
                    int position, long id) {


                // Sending image id to FullScreenActivity
                Intent i = new Intent(getApplicationContext(), FullImageActivity.class);
                // passing array index
                i.putExtra("id", position);
                startActivity(i);

            }
});
}

    private ArrayList<ImageItem> getData() {
        final ArrayList<ImageItem> imageItems = new ArrayList<ImageItem>();
        // retrieve String drawable array
        TypedArray imgs = getResources().obtainTypedArray(R.array.image_ids);
        for (int i = 0; i < imgs.length(); i++) {
            Bitmap bitmap = BitmapFactory.decodeResource(this.getResources(),
                    imgs.getResourceId(i, -1));
            imageItems.add(new ImageItem(bitmap, "Image#" + i));
        }

        return imageItems;

    }

}

Answer 1

在显示10张小图片的主屏幕中，我猜您使用的代码如下：

imageView.setImageDrawable(R.drawable.image0);

即使您的ImageViews显示在屏幕的小区域上，Drawable仍然会被解码为完整尺寸，而不是缩放以适合ImageView的尺寸。在设置为ImageView之前，您应该将这些Drawables解码为具有适当大小的位图。您可以查看此主题，了解如何执行此操作http://developer.android.com/training/displaying-bitmaps/load-bitmap.html

Android outOfMemory错误回收不起作用

1 个答案: