java - 内存泄漏错误 Android

Question

InputSream backgroundBitmap;
//backgroundBitmap is initialized from asset image.png
immutableBitmap = BitmapFactory.decodeStream(backgroundBitmap);

收到此错误：

java.lang.OutOfMemoryError 在 android.graphics.BitmapFactory.nativeDecodeAsset（本机方法）

帮我解决这个问题。

Answer 1

试试这个..来自资产的文件

File f = new File("file:///android_assetassets/mydemo.png")

public static Bitmap decodeFile(File f,int WIDTH,int HIGHT){
        try {
            //Decode image size
            BitmapFactory.Options o = new BitmapFactory.Options();
            o.inJustDecodeBounds = true;
            BitmapFactory.decodeStream(new FileInputStream(f),null,o);

            //The new size we want to scale to
            final int REQUIRED_WIDTH=WIDTH;
            final int REQUIRED_HIGHT=HIGHT;
            //Find the correct scale value. It should be the power of 2.
            int scale=1;
            while(o.outWidth/scale/2>=REQUIRED_WIDTH && o.outHeight/scale/2>=REQUIRED_HIGHT)
                scale*=2;

            //Decode with inSampleSize
            BitmapFactory.Options o2 = new BitmapFactory.Options();
            o2.inSampleSize=scale;
            return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
        }
            catch (FileNotFoundException e) {}
        return null;
    }

此函数将在您传递宽度和高度时缩放位图