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Fixed app crash when putting the app to pause and back to active
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Thorsten Bux committed Dec 1, 2016
1 parent 537761e commit 804741d
Showing 1 changed file with 25 additions and 7 deletions.
Expand Up @@ -85,6 +85,7 @@ public class UnityARPlayerActivity extends UnityPlayerNativeActivity {
private DisplayControl mDisplayControl = null;

protected final static int PERMISSION_REQUEST_CAMERA = 77;
private ViewGroup decorView;

Expand Down Expand Up @@ -123,6 +124,29 @@ protected void onCreate(Bundle savedInstanceState) {
int resID = getResources().getIdentifier("preferences", "xml", getPackageName());
PreferenceManager.setDefaultValues(this, resID, false);

//Find the Unity view. We need to find the Unity view in order to remove it and add in the video preview.
//After adding the video preview the Unity view is added back in gain. This way we ensure that
//the video is in the background and the Unity view (containing the Unity scene(s)) overlay the video.
this.decorView = (ViewGroup)this.getWindow().getDecorView();
if(this.decorView == null) {
Log.e("UnityARPlayerActivity", "Error: Failed to find the decorView.");
} else {
//Generally the Unity view is as position 0 in the decorView. In some cases, however, it
//is not. That is why we look for it in the view hierarchy.
for(int i = 0; i < this.decorView.getChildCount(); i++) {
View decorViewChild = this.decorView.getChildAt(i);
if(decorViewChild instanceof ViewGroup) {
this.unityView = (ViewGroup)decorViewChild;

if(this.unityView == null) {
String errorMsg = "Error: Failed to find the unityView.";
Log.e("UnityARPlayerActivity", errorMsg);

//Request permission to use the camera on android 23+
int permissionCheck = ContextCompat.checkSelfPermission(this.getApplicationContext(), Manifest.permission.CAMERA);
if (permissionCheck != PackageManager.PERMISSION_GRANTED)
Expand Down Expand Up @@ -166,12 +190,7 @@ protected void onResume() {
//View focusView = getCurrentFocus(); // Save the focus, in case we inadvertently change it.
//Log.i(TAG, "Focus view is " + focusView.toString() + ".");

ViewGroup decorView = (ViewGroup) getWindow().getDecorView();
unityView = (ViewGroup) decorView.getChildAt(0);
if (unityView == null) {
Log.e(TAG, "Error: Could not find top view.");

//Log.i(TAG, "Top view is " + unityView.toString() + ".");

// Create a placeholder for us to insert the camera preview capture object to the
Expand Down Expand Up @@ -215,7 +234,6 @@ protected void onPause() {

previewInserter = null;
unityView = null;

void launchPreferencesActivity() {
Expand Down

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