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?
检查缩放的72x72和原始的:
72x72(如你所见,旋转且质量非常差) http://imgim.com/9958incic3494599.png
原: http://imgim.com/3847incix7666386.png
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;
}
}
答案 0 :(得分:1)
尝试此功能:
public Bitmap getResizedBitmap(Bitmap bm, int newHeight, int newWidth) {
int width = bm.getWidth();
int height = bm.getHeight();
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
// CREATE A MATRIX FOR THE MANIPULATION
Matrix matrix = new Matrix();
// RESIZE THE BIT MAP
matrix.postScale(scaleWidth, scaleHeight);
// "RECREATE" THE NEW BITMAP
Bitmap resizedBitmap = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, false);
return resizedBitmap;
}
这对我有帮助。