我从画廊中挑选了一张图片并对其进行了解码。现在我只想将该位图的大小调整为标准的72x72大小,以便用作个人资料照片。
我搜索了很多但没有任何效果,其中一些人无缘无故地旋转了我的图像,其中一些使图像质量非常低。那难吗?
修改
代码:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent)
{
super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
switch(requestCode)
{
case 100: // SELECT_PHOTO
if(resultCode == RESULT_OK)
{
Uri selectedImage = imageReturnedIntent.getData();
InputStream imageStream;
try
{
imageStream = getContentResolver().openInputStream(selectedImage);
}catch (Exception e){ return; }
Bitmap bm = BitmapFactory.decodeStream(imageStream);
bm = Bitmap.createScaledBitmap(bm, 72, 72, true);
UpdateAvatar(bm);
}
break;
}
}
没用。检查缩放72x72和原始的:
72x72(如你所见,旋转且质量非常差) http://imgim.com/9958incic3494599.png
答案 0 :(得分:0)
试试这个 -
Bitmap yourBitmap;
Bitmap resized = Bitmap.createScaledBitmap(yourBitmap, newWidth, newHeight, true);
或其他方式 -
resized = Bitmap.createScaledBitmap(yourBitmap,(int)(yourBitmap.getWidth()*0.8), (int)(yourBitmap.getHeight()*0.8), true);
答案 1 :(得分:0)
不,这并不难。只需使用Bitmap.createScaledBitmap()
:
Bitmap.createScaledBitmap(bitmap, width, height, true);
答案 2 :(得分:0)
这是一个方法的例子,它会给我一个最大120x120的图像,希望这可以帮助你:
public static Bitmap decodeWithBounds(String srcImg) {
Bitmap image;
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(srcImg, options);
if (options.outHeight > 120 || options.outWidth > 120) {
options.inSampleSize = Math.max(
Math.round(options.outHeight / 120),
Math.round(options.outWidth / 120));
}
options.inJustDecodeBounds = false;
image = BitmapFactory.decodeFile(srcImg, options);
return image;
}