我想檢查位圖的方向並在需要時將其翻轉,但我在應用代碼時出錯。這裏是我的代碼,而我試圖用ExifInterface到flipp圖像:使用ExifInterface時出現Android錯誤
@RequiresApi(api = Build.VERSION_CODES.N)
public void flipping(Bitmap b)
{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
b.compress(Bitmap.CompressFormat.JPEG,100, bos);
byte[] bitmapdata = bos.toByteArray();
ByteArrayInputStream bs = new ByteArrayInputStream(bitmapdata);
try {
ExifInterface exif = new ExifInterface(bs);
int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_UNDEFINED);
switch(orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
rotateImage(b, 90);
break;
case ExifInterface.ORIENTATION_ROTATE_180:
rotateImage(b, 180);
break;
case ExifInterface.ORIENTATION_ROTATE_270:
rotateImage(b, 270);
break;
case ExifInterface.ORIENTATION_NORMAL:
default:
break;
}
encoding();
} catch (IOException e) {
e.printStackTrace();
}
}
public static Bitmap rotateImage(Bitmap source, float angle) {
Matrix matrix = new Matrix();
matrix.postRotate(angle);
return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(),
matrix, true);
}
,這裏是錯誤:
java.lang.NoSuchMethodError: No direct method <init>(Ljava/io/InputStream;)V in class Landroid/media/ExifInterface; or its super classes (declaration of 'android.media.ExifInterface' appears in /system/framework/framework.jar)
at com.sara.image_test.MainActivity.flipping(MainActivity.java:181)
at com.sara.image_test.MainActivity.onActivityResult(MainActivity.java:66)
at android.app.Activity.dispatchActivityResult(Activity.java:7165)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4994)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:5041)
at android.app.ActivityThread.access$1600(ActivityThread.java:229)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1875)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7325)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
謝謝,它不再給出錯誤。但它總是在所有圖像上返回0。 –
@SalehRefaai:這並不奇怪,因爲'Bitmap'沒有任何EXIF標頭。當您從任何地方加載「位圖」時,您已經丟棄了任何EXIF數據。在原始數據源上使用'ExifInterface',而不是'Bitmap'。 – CommonsWare