android - 将多个图像加载到gridview android

Question

我有大约 300 张 jpg 图像，我想将这些图像加载到 GridView 中。我正在关注 tutorial

但是当我尝试加载图像时(如果它小于 25 就可以了)然后我得到了内存不足的错误。

private ArrayList getData() {
        final ArrayList imageItems = new ArrayList();
        // 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;

    }

这是加载图片的代码

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

这是设置图像的代码。你们知道如何将我的所有(200 多张图像)加载到我的 GridView 吗？

谢谢

Answer 1

要解决 android.graphics.BitmapFactory.nativeDecodeByteArray 的 java.lang.OutOfMemoryError 异常，您应该使用以下代码:

BitmapFactory.Options options=new BitmapFactory.Options();// Create object of bitmapfactory's option method for further option use
                options.inPurgeable = true; // inPurgeable is used to free up memory while required
                Bitmap songImage1 = BitmapFactory.decodeByteArray(thumbnail,0, thumbnail.length,options);//Decode image, "thumbnail" is the object of image file
                Bitmap songImage = Bitmap.createScaledBitmap(songImage1, 50 , 50 , true);// convert decoded bitmap into well scalled Bitmap format.

imageview.SetImageDrawable(songImage);