// Called when creating.
@Override
protected final void onCreate(Bundle savedInstanceState) {
// start tracking
trackInstance(this);
// call super
super.onCreate(savedInstanceState);
// setup instance state
Intent intent = this.getIntent();
String sharedGalleryId =
(intent != null ? intent.getStringExtra(EXTRA_SHARED_GALLERY_ID) : null);
InstanceStateFragment stateFragment =
(InstanceStateFragment)
this.getFragmentManager().findFragmentByTag(InstanceStateFragment.TAG);
m_Gallery = Gallery.fromId(sharedGalleryId);
if (m_Gallery == null) {
if (stateFragment != null) {
Log.w(TAG, "onCreate() - Use existent Gallery : " + stateFragment.gallery.getId());
m_Gallery = stateFragment.gallery;
m_ActivityResultHandles = stateFragment.activityResultHandles;
} else {
Log.w(TAG, "onCreate() - Create new Gallery");
m_Gallery = GalleryApplication.current().createGallery();
m_ActivityResultHandles = new SparseArray<>();
}
} else {
Log.w(TAG, "onCreate() - Use shared Gallery : " + m_Gallery.getId());
m_ActivityResultHandles = new SparseArray<>();
m_IsSharedGallery = true;
}
// attach to gallery
m_GalleryAttachHandle = m_Gallery.attachActivity(this);
if (!Handle.isValid(m_GalleryAttachHandle)) {
Log.e(TAG, "onCreate() - Fail to attach to Gallery");
this.finish();
return;
}
m_Gallery.addCallback(Gallery.PROP_IS_NAVIGATION_BAR_VISIBLE, m_NavBarVisibilityCallback);
m_Gallery.addCallback(Gallery.PROP_IS_STATUS_BAR_VISIBLE, m_StatusBarVisibilityCallback);
// initialize screen size
this.updateScreenSize();
// create
this.onCreate(savedInstanceState, stateFragment != null ? stateFragment.extras : null);
}
// Save instance state.
@Override
protected final void onSaveInstanceState(Bundle outState) {
// get instance state fragment
InstanceStateFragment stateFragment =
(InstanceStateFragment)
this.getFragmentManager().findFragmentByTag(InstanceStateFragment.TAG);
if (stateFragment == null) {
stateFragment = new InstanceStateFragment();
this.getFragmentManager()
.beginTransaction()
.add(stateFragment, InstanceStateFragment.TAG)
.commit();
}
// save instance state
Log.w(TAG, "onSaveInstanceState() - Keep Gallery instance : " + m_Gallery.getId());
stateFragment.gallery = m_Gallery;
stateFragment.activityResultHandles = m_ActivityResultHandles;
this.onSaveInstanceState(outState, stateFragment.extras);
// call super
super.onSaveInstanceState(outState);
// update state
m_IsInstanceStateSaved = true;
}
// Check alive instances.
private static void checkInstances(long delayMillis) {
// check immediately
Handler handler = GalleryApplication.current().getHandler();
handler.removeCallbacks(m_CheckInstancesRunnable);
if (delayMillis <= 0) {
for (int i = m_TrackingInstances.size() - 1; i >= 0; --i) {
Object instance = m_TrackingInstances.get(i).get();
if (instance == null) m_TrackingInstances.remove(i);
}
Log.w(
"GalleryActivity", "checkInstances() - Alive instances : " + m_TrackingInstances.size());
return;
}
// check later
handler.postDelayed(m_CheckInstancesRunnable, delayMillis);
}
// Called when destroying.
@Override
protected void onDestroy() {
// detach from gallery
m_Gallery.removeCallback(Gallery.PROP_IS_NAVIGATION_BAR_VISIBLE, m_NavBarVisibilityCallback);
m_Gallery.removeCallback(Gallery.PROP_IS_STATUS_BAR_VISIBLE, m_StatusBarVisibilityCallback);
m_GalleryAttachHandle = Handle.close(m_GalleryAttachHandle);
// release gallery
if (!m_IsInstanceStateSaved && !m_IsSharedGallery) {
Log.w(TAG, "onDestroy() - Release Gallery");
m_Gallery.release();
}
// release references
m_ActivityResultHandles = null;
// call super
super.onDestroy();
// check instances
checkInstances(DURATION_CHECK_INSTANCES_DELAY);
}