这是对@Geoff出色回答的跟进，但适用于更动态和实时的场景。
我原本想这篇文章只是一个小小的帖子，但现在我意识到它有点失控了。然而，代码都在那里，我觉得它非常有用，尽管它涵盖了比仅禁用转换动画更多的内容。
通常，当我使用Fragments时，我喜欢有一个BaseFragment连接到一个BaseActivityCallback。这个BaseActivityCallback可以被我的Fragments用来在自己的顶部添加一个新的Fragment，甚至可以弹出它下面的Fragments，因此希望禁用弹出动画--或者静默地弹出：
interface BaseActivityCallback
{
void addFragment ( BaseFragment f, int containerResId );
void popFragment ( boolean silently );
}
class BaseActivity extends android.support.v4.app.FragmentActivity implements BaseActivityCallback
{
public void addFragment ( BaseFragment f, int containerResId )
{
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.setCustomAnimations(R.anim.enter, R.anim.exit, R.anim.enter, R.anim.pop_exit);
ft.addToBackStack(DEFAULT_FRAGMENT_STACK_NAME);
ft.replace(containerResId, fragment);
ft.commitAllowingStateLoss();
}
public void popFragment ( boolean silently )
{
FragmentManager fm = getSupportFragmentManager();
if ( silently ) {
int count = fm.getFragments().size();
BaseFragment f = (BaseFragment)fm.getFragments().get(count-1);
f.setDisableTransitionAnimations(true);
}
fm.popBackStackImmediate();
}
}
public abstract class BaseFragment extends android.support.v4.app.Fragment
{
private static final String TAG = "BaseFragment";
private final String STATE_DISABLE_TRANSITION_ANIMATIONS = TAG+".stateDisableTransitionAnimations";
protected BaseActivityCallback baseActivityCallback;
private boolean disableTransitionAnimations;
@Override
public void onCreate ( @Nullable Bundle savedInstanceState )
{
super.onCreate(savedInstanceState);
disableTransitionAnimations = (savedInstanceState==null ? false : savedInstanceState.getBoolean(STATE_DISABLE_TRANSITION_ANIMATIONS, false));
}
@Override
public void onAttach ( Context context )
{
super.onAttach(context);
baseActivityCallback = (BaseActivityCallback)context;
}
@Override
public void onSaveInstanceState ( Bundle outState )
{
super.onSaveInstanceState(outState);
outState.putBoolean(STATE_DISABLE_TRANSITION_ANIMATIONS, disableTransitionAnimations);
}
@Override
public Animation onCreateAnimation ( int transit, boolean enter, int nextAnim )
{
if ( disableTransitionAnimations ) {
Animation nop = new Animation(){};
nop.setDuration(0);
return nop;
}
return super.onCreateAnimation(transit, enter, nextAnim);
}
public void setDisableTransitionAnimations ( boolean disableTransitionAnimations )
{
this.disableTransitionAnimations = disableTransitionAnimations;
}
}
现在，您可以创建您的
MainActivity并显示一个
Fragment1，该片段可以添加另一个
Fragment2，该片段可能会静默地弹出
Fragment1。
public class MainActivity extends BaseActivity
{
protected void onCreate ( Bundle savedInstanceState )
{
setContentView(R.layout.main_activity);
...
if ( getSupportFragmentManager().getFragments() != null && !getSupportFragmentManager().getFragments().isEmpty() ) {
addFragment( FragmentA.newInstance(), R.id.main_activity_fragment_container );
}
}
...
}
public class FragmentA extends BaseFragment
{
public View onCreateView ( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState )
{
ViewGroup root = (ViewGroup)inflater.inflate(R.layout.fragment_a, container, false);
...
root.findViewById(R.id.fragment_a_next_button)
.setOnClickListener( new View.OnClickListener() {
public void onClick ( View v ) {
baseActivityCallback.addFragment( FragmentB.newInstance(), R.id.main_activity_fragment_container );
}
});
}
}
public class FragmentB extends BaseFragment
{
public View onCreateView ( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState )
{
ViewGroup root = (ViewGroup)inflater.inflate(R.layout.fragment_b, container, false);
...
root.findViewById(R.id.fragment_b_pop_silently_button)
.setOnClickListener( new View.OnClickListener() {
public void onClick ( View v ) {
baseActivityCallback.popFragment( true );
}
});
}
}
