主要活动:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setDisplayUseLogoEnabled(true);
getSupportActionBar().setCustomView(R.layout.action_bar_layout);
getSupportActionBar().setDisplayShowCustomEnabled(true);
MedSectionFragment medSectionFragment = (MedSectionFragment)getSupportFragmentManager().findFragmentByTag("medSectionFragment");
if (medSectionFragment == null){
medSectionFragment = new MedSectionFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.add(android.R.id.content, medSectionFragment, "medSectionFragment");
// transaction.addToBackStack(null);
transaction.commit();
}
}
第一片段:
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle saveInstanceState){
//Inflate the fragment layout file
ViewGroup rootView=(ViewGroup)inflater.inflate(R.layout.med_sections_list, container, false);
}
第二片段:
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle saveInstanceState) {
//Inflate the fragment layout file
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.official_name_list, container, false);
}
在从一个片段(类别)转换到另一个(子类别)之后,我们有listview和actionbar . 这是真的 .
但是当我转换到第三个片段时(详细信息)
public class DetailMedicineFragment extends Fragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle saveInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.detail_medicine_fragment, container, false);
return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Toolbar toolbar = (Toolbar)getActivity().findViewById(R.id.mToolbar);
((AppCompatActivity) getActivity()).setSupportActionBar(toolbar);
}
发生错误
java.lang.IllegalStateException:此Activity已经有一个由窗口装饰提供的操作栏 . 不要在主题中请求Window.FEATURE_SUPPORT_ACTION_BAR并将windowActionBar设置为false以使用工具栏 . 在android.support.v7.app.AppCompatDelegateImplV7.setSupportActionBar(AppCompatDelegateImplV7.java:198)的android.support.v7.app.AppCompatActivity.setSupportActionBar(AppCompatActivity.java:99)at ua.edu.sumdu.medmaterialdesign.DetailMedicineFragment.onActivityCreated (DetailMedicineFragment.java:41)位于android.support的android.support.v4.app.Fragment.performActivityCreated(Fragment.java:1970)的android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1092) . 在android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java)的android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)上的v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1248) 1613)在android.os.Handler.dispatchMessage(Handler.java)的android.os.Handler.handleCallback(Handler.java:739)的android.support.v4.app.FragmentManagerImpl $ 1.run(FragmentManager.java:517) 95)在android.app.Looper.loop(Looper.java:211)android.app.ActivityThread.main(ActivityThread.java: 5389)at java.lang.reflect.Method.invoke(Native Method)at java.lang.reflect.Method.invoke(Method.java:372)at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit . java:1020)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:815)
应用风格
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
1 回答
由于这个问题已经有了答案(以上记录)而你之前就已经这样做了,所以应该用这两个来完成:
而且,既然你已经添加了
Toolbar
,请确保Activity
的Styles
父级是:重点是:
NoActionBar
. (就像我猜的那样,你使用DarkActionBar
)另外:Difference and uses of onCreate(), onCreateView() and onActivityCreated() in fragments
听起来不错,但是,在
onCreate
上使用它会怎么样?它应该隐藏
ActionBar
.但是,关于这一行:
我认为问题出在
AppCompatActivity
,你在_1113031中使用它我想 .类似于它的东西试图从那个
Activity
投射而不仅仅是为了Fragment
.你说: How to remove action bar from fragment?
问题是,你为什么试图获得
Toolbar
呢?请记住,
Fragments
没有Actionbars/Toolbars
,Activities
.http://developer.android.com/guide/components/fragments.html