Java Code Examples for android.app.Fragment#getTag()

private String getStateId() {
    if (stateId != null) {
        return stateId;
    }

    Fragment parentFragment = getParentFragment();
    stateId = parentFragment.getTag();
    if (stateId == null) {
        int id = parentFragment.getId();
        if (id > 0) {
            stateId = Integer.toString(id);
        }
    }

    if (stateId == null) {
        throw new IllegalStateException("Fragment dose not have a valid id");
    }
    
    return stateId;
}
 

/**
 * Try refreshing the given Fragment in place, preserving construction args. The new Fragment will
 * be constructed via a fresh class lookup. This method must be called from the UI thread
 *
 * @param fragment the fragment to refresh
 * @param preserveState if true, attempt to save the Fragment's current state and restore it to
 *     the new instance of the fragment
 */
public static void refreshFragment(Fragment fragment, boolean preserveState) {
  assertIsUiThread();
  FragmentManager manager = fragment.getFragmentManager();
  final Bundle args = fragment.getArguments();
  Fragment replacement = createFragment(fragment.getClass().getName(), args);

  String tag = fragment.getTag();

  if (preserveState) {
    // Restore any state that's possible
    final SavedState savedState = manager.saveFragmentInstanceState(fragment);
    replacement.setInitialSavedState(savedState);
  }

  int containerViewId = ((View) fragment.getView().getParent()).getId();
  final FragmentTransaction transaction = manager.beginTransaction();
  transaction.remove(fragment);
  if (tag != null) {
    transaction.add(containerViewId, replacement, tag);
  } else {
    transaction.add(containerViewId, replacement);
  }
  transaction.commit();
}
 

/**清空所有除了带此tag的fragment*/
public void removeAllExcept(String tag){
    FragmentTransaction ft = fm.beginTransaction();
    for (Fragment f:fs) {
        if(f.getTag()!=null&&!f.getTag().equals(tag))ft.remove(f);
    }
    ft.commitAllowingStateLoss();
}
 

public static ScreenView buildWithFragment(Fragment fragment) {
    String fragmentClassName = fragment.getClass().getSimpleName();
    String fragmentTag = fragment.getTag();
    String name = getValidName(fragmentClassName, fragmentTag);
    return ScreenView.builder()
            .activityClassName(null)
            .activityTag(null)
            .fragmentClassName(fragment.getClass().getSimpleName())
            .fragmentTag(fragment.getTag())
            .name(name)
            .type(fragmentClassName)
            .transitionType(null)
            .build();
}
 

@Override
public Object instantiateItem(ViewGroup container, int position) {
    Object obj = super.instantiateItem(container, position);
    if (obj instanceof Fragment) {
        // record the fragment tag here.
        Fragment f = (Fragment) obj;
        String tag = f.getTag();
        mFragmentTags.put(position, tag);
    }
    return obj;
}
 

public LinkEvent(Fragment fragment, Link link, boolean wasCancelled) {
    mFragmentTag = fragment.getTag();
    mLink = link;
    mWasCancelled = wasCancelled;
}
 

public LinkEvent(Fragment fragment, Link link, boolean wasCancelled) {
    mFragmentTag = fragment.getTag();
    mLink = link;
    mWasCancelled = wasCancelled;
}
 

@Nullable
@Override
public String getTag(Fragment fragment) {
  return fragment.getTag();
}
 

public static boolean isAdded(Fragment fragment) {
    // FIXME
    return fragment.isAdded() || fragment.getTag() != null || fragment.getId() != 0;
}
 

public LinkEvent(Fragment fragment, Link link, boolean wasCancelled) {
    mFragmentTag = fragment.getTag();
    mLink = link;
    mWasCancelled = wasCancelled;
}
 

@Nullable
@Override
public String getTag(Fragment fragment) {
  return fragment.getTag();
}