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[Wi-Fi] Release the camera before opening

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As per the Google's design mentioned at
https://developer.android.com/training/camera/cameradirect.html
Calling Camera.open() throws an exception
if the camera is already in use by another application,
so we wrap it in a try block one must release the camera before opening

Bug: 141662635
Test: Manual occurs once while testing 10 times
1.Open wifi settings,tap QR code icon
2.Make a incoming VoLTE call,tap incoming VoLTE call dialog
3.Check device
Signed-off-by: JeiFeng Lee <linger.lee@mediatek.com>

Change-Id: Ief62600af8b745cb4eae2e5ae277a2cebdda68eb
This commit is contained in:
Arc Wang
2019-10-21 14:37:38 +08:00
parent d038372568
commit 8eda6847f4
1 changed files with 28 additions and 17 deletions
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29
src/com/android/settings/wifi/qrcode/QrCamera.java
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@@ -288,33 +288,44 @@ public class QrCamera extends Handler {
for (int i = 0; i < numberOfCameras; ++i) {
Camera.getCameraInfo(i, cameraInfo);
if (cameraInfo.facing == CameraInfo.CAMERA_FACING_BACK) {
releaseCamera();
mCamera = Camera.open(i);
mCamera.setPreviewTexture(surface);
mCameraOrientation = cameraInfo.orientation;
break;
}
}
if (mCamera == null) {
Log.e(TAG, "Cannot find available back camera.");
} catch (RuntimeException e) {
Log.e(TAG, "Fail to open camera: " + e);
mCamera = null;
mScannerCallback.handleCameraFailure();
return false;
}
try {
if (mCamera == null) {
throw new IOException("Cannot find available back camera");
}
mCamera.setPreviewTexture(surface);
setCameraParameter();
setTransformationMatrix();
if (!startPreview()) {
Log.e(TAG, "Error to init Camera");
throw new IOException("Lost contex");
}
} catch (IOException ioe) {
Log.e(TAG, "Fail to startPreview camera: " + ioe);
mCamera = null;
mScannerCallback.handleCameraFailure();
return false;
}
return true;
} catch (IOException e) {
Log.e(TAG, "Error to init Camera");
mCamera = null;
mScannerCallback.handleCameraFailure();
return false;
}
}
private void releaseCamera() {
if (mCamera != null) {
mCamera.release();
mCamera = null;
}
}
/** Set transform matrix to crop and center the preview picture */