复制代码 代码如下:

public static Bitmap zoomBitmap(Bitmap bitmap,int w,int h){   
        int width = bitmap.getWidth();   
        int height = bitmap.getHeight();   
        Matrix matrix = new Matrix();   
        float scaleWidht = ((float)w / width);   
        float scaleHeight = ((float)h / height);   
        matrix.postScale(scaleWidht, scaleHeight);   
        Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);   
        return newbmp;   
    }