内存不够的异常使用自定义的GridView [英] Out Of Memory Exception with custom GridView

问题描述

我有这个$ C $自定义网格视图的c和每个我尝试运行它时，它崩溃所造成的 OutOfMemoryException异常。我想解决的办法就是调整图像阵列中...

I have this code of a custom grid view and each time I try to run it, it crashes caused by an OutOfMemoryException. I guess the solution is to resize the images in the array ...

主要活动code

public class AndroidGridLayoutActivity extends Activity {

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

            GridView gridView = (GridView) findViewById(R.id.grid_view);

            // Instance of ImageAdapter Class
            gridView.setAdapter(new ImageAdapter(this));

            /**
             * On Click event for Single Gridview Item
             * */
            gridView.setOnItemClickListener(new OnItemClickListener() {
                @Override
                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);
                }
            });
        }



}

图像适配器code

public class ImageAdapter extends BaseAdapter {
    private Context mContext;

    // Keep all Images in array
    public Integer[] mThumbIds = {
            R.drawable.pic_1, R.drawable.pic_2,
            R.drawable.pic_3, R.drawable.pic_4,
            R.drawable.pic_5, R.drawable.pic_6,
            R.drawable.pic_7, R.drawable.pic_8,
            R.drawable.pic_9, R.drawable.pic_10,
            R.drawable.pic_11, R.drawable.pic_12,
            R.drawable.pic_13, R.drawable.pic_14,
            R.drawable.pic_15
    };

    // Constructor
    public ImageAdapter(Context c){
        mContext = c;
    }

    @Override
    public int getCount() {
        return mThumbIds.length;
    }

    @Override
    public Object getItem(int position) {
        return mThumbIds[position];
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {         
        ImageView imageView = new ImageView(mContext);
        imageView.setImageResource(mThumbIds[position]);
        imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
        imageView.setLayoutParams(new GridView.LayoutParams(70, 70));

        return imageView;
    }
}

全屏code

public class FullImageActivity extends Activity {


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

        // get intent data
        Intent i = getIntent();

        // Selected image id
        int position = i.getExtras().getInt("id");
        ImageAdapter imageAdapter = new ImageAdapter(this);

        ImageView imageView = (ImageView) findViewById(R.id.full_image_view);
        imageView.setImageResource(imageAdapter.mThumbIds[position]);
    }

}

任何建议，请??

any advice please??

推荐答案

ESP为..loading图像在的GridView ：< BR> 您可以使用 inSampleSize 来加载所有的图像和由原始的全1含义视图部分可见的更换可见光图像，动态加载图像，而不必将 inSampleSize 为 BitmapFactory 和选项。

Esp for "..loading the images in a GridView:
you can use inSampleSize to load all images and replace the visible images by the original ones- meaning for the view part that are visible, dynamically load images without the inSampleSize for the BitmapFactory and its Options.

根据不同的设备加载图像，而无需面对内存的问题你可以扩展他们失望。 在你的情况，有些手机可能不出现相同的行为在第一次运行，但最终，没有处理优化的图像加载的解决方案，应用程序会崩溃。

You could scale them down depending on different devices to load the images without facing a memory problem. In your case, some phones may not exhibit the same behavior on the first run, but eventually, without handling an optimized image loading solution, app will crash.

在加载主题的缩小版到​​内存中。
http://developer.android.com/training/displaying-bitmaps/load -bitmap.html
内存不足的错误的Andr​​oid

Topic under Load a Scaled Down Version into Memory.
http://developer.android.com/training/displaying-bitmaps/load-bitmap.html
Out of memory error android

在如何避免它们：
<一href="http://stackoverflow.com/questions/19151719/how-to-avoid-out-of-memory-error-while-using-bitmap-in-android">how避免内存不足的错误，而在Android的使用位图

On how to avoid them:
how to avoid out of memory error while using bitmap in android

有关概述：
的http://blogs.innovationm.com/android-out-of-memory-error-causes-solution-and-best-practices/ http://android-developers.blogspot.de/2009/01 /avoiding-memory-leaks.html

For an overview:
http://blogs.innovationm.com/android-out-of-memory-error-causes-solution-and-best-practices/ http://android-developers.blogspot.de/2009/01/avoiding-memory-leaks.html

在设置绘制为背景，为您的ImageView的，即：

Before setting a drawable as the background for your imageview, i.e.:

iv.setBackgroundResource(R.drawable.image);  

获取缩放位图或尝试其他选项，如 inSampleSize ，做检查怎么您的解决方案会影响图像的质量了。

Get a scaled bitmap or try other options like inSampleSize, do check how your solution affects the quality of your image too.

有关评论：

Bitmap drawableImage=BitmapFactory.decodeResource(context.getResources(),R.drawable.image);
Bitmap bitmap = Bitmap.createScaledBitmap(drawableImage, width, height, false);
Drawable drawableScaled = new BitmapDrawable(context.getResources(), bitmap);

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