static void initialBackground(
GuidedStepSupportFragment fragment, int id, FragmentTransaction ft) {
if (fragment.getContainerIdForBackground() != View.NO_ID) {
Fragment backgroundFragment = fragment.onProvideBackgroundSupportFragment();
if (backgroundFragment != null) {
ft.replace(fragment.getContainerIdForBackground(), backgroundFragment);
}
}
}
/**
* Adds the specified GuidedStepSupportFragment as content of Activity; no backstack entry is
* added so the activity will be dismissed when BACK key is pressed. {@link
* #UI_STYLE_ACTIVITY_ROOT} is assigned.
*
* <p>Note: currently fragments added using this method must be created programmatically rather
* than via XML.
*
* @param activity The Activity to be used to insert GuidedstepFragment.
* @param fragment The GuidedStepSupportFragment to be inserted into the fragment stack.
* @param id The id of container to add GuidedStepSupportFragment, can be android.R.id.content.
* @return The ID returned by the call FragmentTransaction.replace.
*/
public static int addAsRoot(
FragmentActivity activity, GuidedStepSupportFragment fragment, int id) {
// Workaround b/23764120: call getDecorView() to force requestFeature of ActivityTransition.
activity.getWindow().getDecorView();
FragmentManager fragmentManager = activity.getSupportFragmentManager();
FragmentTransaction ft = fragmentManager.beginTransaction();
fragment.setUiStyle(UI_STYLE_ACTIVITY_ROOT);
initialBackground(fragment, id, ft);
return ft.replace(id, fragment, TAG_LEAN_BACK_ACTIONS_FRAGMENT).commit();
}
/**
* Adds the specified GuidedStepSupportFragment to the fragment stack, replacing any existing
* GuidedStepSupportFragments in the stack, and configuring the fragment-to-fragment custom
* transitions. A backstack entry is added, so the fragment will be dismissed when BACK key is
* pressed.
* <li>If current fragment on stack is GuidedStepSupportFragment: assign {@link #UI_STYLE_DEFAULT}
* <li>If current fragment on stack is not GuidedStepSupportFragment: assign {@link
* #UI_STYLE_ENTRANCE}
*
* <p>Note: currently fragments added using this method must be created programmatically
* rather than via XML.
*
* @param fragmentManager The FragmentManager to be used in the transaction.
* @param fragment The GuidedStepSupportFragment to be inserted into the fragment stack.
* @param id The id of container to add GuidedStepSupportFragment, can be android.R.id.content.
* @return The ID returned by the call FragmentTransaction.replace.
*/
public static int add(
FragmentManager fragmentManager, GuidedStepSupportFragment fragment, int id) {
boolean inGuidedStep = getCurrentGuidedStepSupportFragment(fragmentManager) != null;
if (IS_FRAMEWORK_FRAGMENT
&& Build.VERSION.SDK_INT >= 21
&& Build.VERSION.SDK_INT < 23
&& !inGuidedStep
&& fragment.getContainerIdForBackground() != View.NO_ID) {
// workaround b/22631964 for framework fragment
fragmentManager
.beginTransaction()
.replace(id, new DummyFragment(), TAG_LEAN_BACK_ACTIONS_FRAGMENT)
.replace(fragment.getContainerIdForBackground(), new DummyFragment())
.commit();
}
FragmentTransaction ft = fragmentManager.beginTransaction();
ft.addToBackStack(null);
fragment.setUiStyle(inGuidedStep ? UI_STYLE_DEFAULT : UI_STYLE_ENTRANCE);
initialBackground(fragment, id, ft);
return ft.replace(id, fragment, TAG_LEAN_BACK_ACTIONS_FRAGMENT).commit();
}