Question

当我从一个活动切换到另一个活动时，我正在丢失我应该显示活动标题的活动栏。

点击特定列表视图后，我会看到以下屏幕。

DetailAcivity代码[第二次截图]：

public class DetailActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_detail);
        if(savedInstanceState == null ){
            getSupportFragmentManager().beginTransaction()
                    .add(R.id.detail_container, new DetailFragment())
                    .commit();

        }
    }

    public static class DetailFragment extends Fragment{
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_detail, container, false);

            Intent intent = getActivity().getIntent();
            String forcastString = intent.getStringExtra(Intent.EXTRA_TEXT);
            ((TextView)rootView.findViewById(R.id.detail_text)).setText(forcastString);

            return rootView;
        }
    }
}

详细活动的布局如下：

activity_detail.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:id="@+id/detail_container"
    tools:context="com.example.android.sunshine.DetailActivity">

</RelativeLayout>

fragment_detail.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity$PlaceholderFragment">

    <TextView
        android:id="@+id/detail_text"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </TextView>


</LinearLayout>

所以有人可以帮助我的标题栏丢失吗？

Answer 1

您的toolbar中未包含DetailAcivity。在您的DetailAcivity中包含工具栏，就像您在第一个活动中包含它一样

在切换活动时，我正在失去活动栏

1 个答案: