Android大图片加载处理

 BitmapFactory.Options options=new BitmapFactory.Options();//创建权利                //先不计算内存                options.inJustDecodeBounds=true;                BitmapFactory.decodeResource(getResources(),R.mipmap.bitmap,options);                //调用Options方法来获取图片宽高                int outHeight = options.outHeight;                int outWidth = options.outWidth;                Log.d(TAG,"outHeight == >"+outHeight);                Log.d(TAG,"outWidth == >"+outWidth);                //拿控件的尺寸                int measuredHeight = result_image.getMeasuredHeight();                int measuredWidth = result_image.getMeasuredWidth();                Log.d(TAG,"measureHeight ==>"+measuredHeight);                Log.d(TAG,"measureWidth ==>"+measuredWidth);                //默认不改变大小                options.inSampleSize=1;                //图片的宽度/控件的宽度                //图片的高度/控件的高度                //取两者间的最小值                if (outHeight>measuredHeight||outWidth>measuredWidth){                    int subHeight = outHeight / measuredHeight;                    int subWidth = outWidth / measuredWidth;                    options.inSampleSize=subHeight>subWidth?subWidth : subHeight;//                }                options.inJustDecodeBounds=false;//可以设置进去了                Log.d(TAG,"options.inSampleSize==>"+options.inSampleSize);                //根据控件大小，动态计算sample值                Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.bitmap, options);                result_image.setImageBitmap(bitmap);
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