本文介绍了通过图库打开图像时如何旋转图像?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
通过我的相机"应用捕获和由Galerry打开图像:我的代码打开:
Capture by My Camera App and Open image by Galerry:My code open:
Intent intent = new Intent();
intent.setAction(android.content.Intent.ACTION_VIEW);
File file = new File(dt.FileName);
intent.setDataAndType(Uri.fromFile(file), "image/*");
startActivity(intent);
通过标准相机捕获,通过Galerry打开图像:
Capture by Standard Camera and Open image by Galerry:
我检查原始图像是否相同.在同一图库的标准相机中打开图像时如何旋转图像?
I check Original Image is the same.How rotate image when open image by Gallery the same Standard Camera?
推荐答案
使用此代码更改图像方向
Use this code to change the image orientation
ExifInterface exif = new ExifInterface(filepath);
int exifOrientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
int rotate = 0;
switch (exifOrientation)
{
case ExifInterface.ORIENTATION_ROTATE_90:
rotate = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
rotate = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270:
rotate = 270;
break;
}
if (rotate != 0)
{
int w = bitmap.getWidth();
int h = bitmap.getHeight();
Matrix mtx = new Matrix();
mtx.preRotate(rotate);
bitmap = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, false);
bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
}
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