我想知道如何知道在将方向切换为风景之前,我的片段(启动画面)已经显示。我想在改变方向之后,活动被破坏了。片段 - 更改方向
MainActivity
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//toolbar ...
showFragment(new SplashFragment());
}
public void showFragment(Fragment fragment) {
getSupportFragmentManager().beginTransaction().replace(R.id.main_frame_layout, fragment).addToBackStack("").commit();
}
@Override
//Menu item icons
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return true;
}
片段(闪屏)
公共类SplashFragment扩展片段{从我的评论
public static SplashFragment newInstance() {
Bundle args = new Bundle();
SplashFragment fragment = new SplashFragment();
fragment.setArguments(args);
return fragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_splash, container, false);
return view;
}
@Override
public void onViewCreated(View view, @Nullable final Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
ButterKnife.bind(this, view);
((MainActivity) getActivity()).getSupportActionBar().hide();
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
((MainActivity) getActivity()).showFragment(ContactListFragment.newInstance());
}
}, 1000);
}
您的SplashFragment的处理程序完成后,您可以在捆绑中添加布尔值。因此,当调用SplashFragment时,savedInstanceState可以检查它是否为true,然后跳过并显示ContactListFragment。 或者使用SharedPreferences并将布尔值存储在那里,并从MainActivity中检查它并执行if()else {} showFragment(new SplashFragment.newInstance())或showFragment(newContactListFragment.newInstance()) –
为什么不实现splashscreen作为活动主题并摆脱splashscreen碎片,因此您可以确保在您输入主要活动之前显示splashscreen?之后,你将从配置中获得定位。请在面向风景的应用程序中定义你想要肖像闪屏的结果? –