我目前有一个导航抽屉,在我的活动中有几个片段(Home,Help,About)。在启动时打开Home。我遇到的问题是,当我转到另一个片段(例如“帮助”),然后继续让手机进入睡眠状态并随后打开手机时,它将始终返回到主页而不是帮助。Android - 恢复显示片段
我对生命周期很陌生,但希望得到一些关于如何从不同片段恢复的反馈。
编辑:提供相关代码 更新:意识到这是因为我重新审视简历上的意见。
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initializeUI();
}
private void initializeUI() {
fragAbout = new About();
fragHelp = new Help();
fragHome = new MyViewPager();
// Adding fragments to activity
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.add(R.id.main_activity_fraglayout, fragHome);
transaction.commit();
...
}
private void addDrawerItems() {
...
DrawerItemAdapter drawerAdapter = new DrawerItemAdapter(this, R.layout.nav_list_row, drawerItems);
mDrawerList.setAdapter(drawerAdapter);
mDrawerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
switch (position) {
case 0:
...
newFragOnClick(fragHome, "Home");
break;
case 1:
...
newFragOnClick(fragSettings, "Help");
break;
case 2:
...
newFragOnClick(fragAbout, "About");
break;
default:
break;
}
}
});
}
private void newFragOnClick(Fragment frag, String actionBarTitle){
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.replace(R.id.main_activity_fraglayout, frag);
transaction.commit();
}
请上传您的活动的完整代码 –
您可以通过托管的活动处理此导航,在托管活动的onResume()中替换所需的片段 – Farhan
@Farhan是的,这似乎工作。谢谢! – WonderfulWonder