您可以设置其宽度和高度

Bitmap bm = ShrinkBitmap(imagefile, 150, 150);

通话功能

Bitmap ShrinkBitmap(String file, int width, int height){

BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();

bmpFactoryOptions.inJustDecodeBounds = true;

Bitmap bitmap = BitmapFactory.decodeFile(file, bmpFactoryOptions);

int heightRatio = (int)Math.ceil(bmpFactoryOptions.outHeight/(float)height);

int widthRatio = (int)Math.ceil(bmpFactoryOptions.outWidth/(float)width);

if (heightRatio > 1 || widthRatio > 1)

{

if (heightRatio > widthRatio)

{

bmpFactoryOptions.inSampleSize = heightRatio;

} else {

bmpFactoryOptions.inSampleSize = widthRatio;

}

}

bmpFactoryOptions.inJustDecodeBounds = false;

bitmap = BitmapFactory.decodeFile(file, bmpFactoryOptions);

return bitmap;

}

}

这是另外两个可能对您有帮助的链接. Link 1及以上Link 2