camera.setDisplayOrientation(90);
我已经编码只肖像模式的应用程序。
将相机旋转到90度,这可能会导致不适合在Android的 所有设备为了让所有的Android设备使用下面的代码,在开发者网站吹罚正确的预览。
下面,你必须把你的活动,cameraId =后面是0和前置摄像头为1
public static void setCameraDisplayOrientation(Activity activity, int cameraId, android.hardware.Camera camera) {
android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
android.hardware.Camera.getCameraInfo(cameraId, info);
int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0:
degrees = 0;
break;
case Surface.ROTATION_90:
degrees = 90;
break;
case Surface.ROTATION_180:
degrees = 180;
break;
case Surface.ROTATION_270:
degrees = 270;
break;
}
int result;
//int currentapiVersion = android.os.Build.VERSION.SDK_INT;
// do something for phones running an SDK before lollipop
if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
result = (info.orientation + degrees) % 360;
result = (360 - result) % 360; // compensate the mirror
} else { // back-facing
result = (info.orientation - degrees + 360) % 360;
}
camera.setDisplayOrientation(result);
}
这是如何设置setDisplayOrientation相机
现在,你可能会遇到麻烦是节约在正确的方向捕获的图像,这是相机API中的错误,以支持所有Android设备。 可以克服使用下面
PLS注意EXIF值步骤不会给你正确的值中的所有设备,因此,这会帮助你
int CameraEyeValue = setPhotoOrientation(CameraActivity.this, cameraFront==true ? 1:0); // CameraID = 1 : front 0:back
通过使用我们之前所使用的相同的概念DisplayOrientation
public int setPhotoOrientation(Activity activity, int cameraId) {
android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
android.hardware.Camera.getCameraInfo(cameraId, info);
int rotation = activity.getWindowManager().getDefaultDisplay().getRotation();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0:
degrees = 0;
break;
case Surface.ROTATION_90:
degrees = 90;
break;
case Surface.ROTATION_180:
degrees = 180;
break;
case Surface.ROTATION_270:
degrees = 270;
break;
}
int result;
// do something for phones running an SDK before lollipop
if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
result = (info.orientation + degrees) % 360;
result = (360 - result) % 360; // compensate the mirror
} else { // back-facing
result = (info.orientation - degrees + 360) % 360;
}
return result;
}
因此,最终的PictureCallBack方法应该看起来像
private PictureCallback getPictureCallback() {
PictureCallback picture = new PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
//make a new picture file
File pictureFile = getOutputMediaFile();
if (pictureFile == null) {
return;
}
try {
//write the file
FileOutputStream fos = new FileOutputStream(pictureFile);
Bitmap bm=null;
// COnverting ByteArray to Bitmap - >Rotate and Convert back to Data
if (data != null) {
int screenWidth = getResources().getDisplayMetrics().widthPixels;
int screenHeight = getResources().getDisplayMetrics().heightPixels;
bm = BitmapFactory.decodeByteArray(data, 0, (data != null) ? data.length : 0);
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
// Notice that width and height are reversed
Bitmap scaled = Bitmap.createScaledBitmap(bm, screenHeight, screenWidth, true);
int w = scaled.getWidth();
int h = scaled.getHeight();
// Setting post rotate to 90
Matrix mtx = new Matrix();
int CameraEyeValue = setPhotoOrientation(AndroidCameraExample.this, cameraFront==true ? 1:0); // CameraID = 1 : front 0:back
if(cameraFront) { // As Front camera is Mirrored so Fliping the Orientation
if (CameraEyeValue == 270) {
mtx.postRotate(90);
} else if (CameraEyeValue == 90) {
mtx.postRotate(270);
}
}else{
mtx.postRotate(CameraEyeValue); // CameraEyeValue is default to Display Rotation
}
bm = Bitmap.createBitmap(scaled, 0, 0, w, h, mtx, true);
}else{// LANDSCAPE MODE
//No need to reverse width and height
Bitmap scaled = Bitmap.createScaledBitmap(bm, screenWidth, screenHeight, true);
bm=scaled;
}
}
// COnverting the Die photo to Bitmap
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] byteArray = stream.toByteArray();
fos.write(byteArray);
//fos.write(data);
fos.close();
Toast toast = Toast.makeText(myContext, "Picture saved: " + pictureFile.getName(), Toast.LENGTH_LONG);
toast.show();
} catch (FileNotFoundException e) {
} catch (IOException e) {
}
//refresh camera to continue preview
mPreview.refreshCamera(mCamera);
mPreview.setCameraDisplayOrientation(CameraActivity.this,GlobalCameraId,mCamera);
}
};
return picture;
}
由于仅适用于使用前置和后置摄像头的肖像模式,因此在所有Android设备上都使用正确的肖像方向将图片旋转为仅肖像模式。
景观可以让这个为参考,并在下面的块
if(cameraFront) { // As Front camera is Mirrored so Fliping the Orientation
if (CameraEyeValue == 270) {
mtx.postRotate(90); //change Here
} else if (CameraEyeValue == 90) {
mtx.postRotate(270);//change Here
}
}else{
mtx.postRotate(CameraEyeValue); // CameraEyeValue is default to Display Rotation //change Here
}
同样的事情正在发生在我身上;我也在Nexus S API 10上;感谢您的问题。 – serkanozel
在这里回答http://stackoverflow.com/questions/14066038/why-image-captured-using-camera-intent-gets-rotated-on-some-devices-in-android –
可能的重复[为什么捕获的图像使用相机意图在Android上的某些设备上旋转?](https://stackoverflow.com/questions/14066038/why-does-an-image-captured-using-camera-intent-gets-rotated-on-some-devices -on-a) – bummi