android.support.v4.app.FragmentTransaction#TRANSIT_NONE源码实例Demo

@Override
public Animation onCreateAnimation(int transit, boolean enter, int nextAnim) {
  if (!enter) {
    // React Native will flush the UI cache as soon as we unmount it. This will cause the view to
    // disappear unless we delay it until after the fragment animation.
    if (transit == FragmentTransaction.TRANSIT_NONE && nextAnim == 0) {
      reactRootView.unmountReactApplication();
    } else {
      contentContainer.unmountReactApplicationAfterAnimation(reactRootView);

    }
    reactRootView = null;
  }
  if (getActivity() instanceof ScreenCoordinatorComponent) {
    ScreenCoordinator screenCoordinator =
            ((ScreenCoordinatorComponent) getActivity()).getScreenCoordinator();
    if (screenCoordinator != null) {
      // In some cases such as TabConfig, the screen may be loaded before there is a screen
      // coordinator but it doesn't live inside of any back stack and isn't visible.
      return screenCoordinator.onCreateAnimation(transit, enter, nextAnim);
    }
  }
  return null;
}
 

public TransactionData(Class<? extends T> fragmentClass) {
    this(fragmentClass, FragmentTransaction.TRANSIT_NONE, FragmentTransaction.TRANSIT_NONE);
}
 

public TransactionData(Class<? extends T> fragmentClass, int enterAnim, int exitAnim) {
    this(fragmentClass, enterAnim, exitAnim, FragmentTransaction.TRANSIT_NONE,
            FragmentTransaction.TRANSIT_NONE);
}
 

/**
 * The default enter animation to be used for fragment transactions
 *
 * @return the default fragment enter animation
 */
protected int getDefaultEnterAnimation() {
    return FragmentTransaction.TRANSIT_NONE;
}
 

/**
 * The default exit animation to be used for fragment transactions
 *
 * @return the default fragment exit animation
 */
protected int getDefaultExitAnimation() {
    return FragmentTransaction.TRANSIT_NONE;
}
 

/**
 * The default pop enter animation to be used for fragment transactions
 *
 * @return the default fragment pop enter animation
 */
protected int getDefaultPopEnterAnimation() {
    return FragmentTransaction.TRANSIT_NONE;
}
 

/**
 * The default pop exit animation to be used for fragment transactions
 *
 * @return the default fragment pop exit animation
 */
protected int getDefaultPopExitAnimation() {
    return FragmentTransaction.TRANSIT_NONE;
}