Question

我有2个片段：ls_fragment和pm_fragment。我试图在纵向模式下显示pm_fragment，在横向模式下显示两个片段，但我的代码也不能正常工作。在纵向模式下，它可以显示pm_fragment，但在横向模式下，它只显示一个片段（lm_fragment）。

MainActivity代码：

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    //        setContentView(R.layout.activity_main);

        Configuration config = getResources().getConfiguration();

        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction fragmentTransaction =
                fragmentManager.beginTransaction();

        LM_Fragment lm_fragment = new LM_Fragment();
        PM_Fragment pm_fragment = new PM_Fragment();

        /**
         * Check the device orientation and act accordingly
         */
        if (config.orientation == Configuration.ORIENTATION_LANDSCAPE) {
            /**
             * Landscape mode of the device
             */
            fragmentTransaction.replace(android.R.id.content, lm_fragment);
            fragmentTransaction.add(android.R.id.content, pm_fragment);
          //fragmentTransaction.replace(android.R.id.content, pm_fragment);
        }else{
            /**
             * Portrait mode of the device
             */
            fragmentTransaction.replace(android.R.id.content, pm_fragment);
        }
        fragmentTransaction.commit();
    }
}

和LM_Fragment类（看起来像PM_Fragment类）：

public class LM_Fragment extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater,
                             ViewGroup container, Bundle savedInstanceState) {
        /**
         * Inflate the layout for this fragment
         */
        return inflater.inflate(
                R.layout.lm_fragment, container, false);
    }
}

activity_main.xml中：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal">

    <framelayout
        android:name="com.example.myfragments.LM_Fragment"
        android:id="@+id/lm_fragment"
        android:layout_weight="1"
        android:layout_width="0dp"
        android:layout_height="match_parent" />

    <framelayout
        android:name="com.example.myfragments.PM_Fragment"
        android:id="@+id/pm_fragment"
        android:layout_weight="2"
        android:layout_width="0dp"
        android:layout_height="match_parent" />

</LinearLayout>

lm_fragment.xml（看起来像pm_fragment.xml）

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#7bae16">

    <TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@string/landscape_message"
    android:textColor="#000000"
    android:textSize="20px" />

    <!-- More GUI components go here  -->

</LinearLayout>

如何在风景中显示两个片段？

Answer 1

尝试使用以下代码更改您的activity_main.xml。

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal"
    android:weightSum="2">

    <framelayout
        android:name="com.example.myfragments.LM_Fragment"
        android:id="@+id/lm_fragment"
        android:layout_weight="1"
        android:layout_width="0dp"
        android:layout_height="match_parent" />

    <framelayout
        android:name="com.example.myfragments.PM_Fragment"
        android:id="@+id/pm_fragment"
        android:layout_weight="1"
        android:layout_width="0dp"
        android:layout_height="match_parent" />
</LinearLayout>

在一个活动中包含2个片段

1 个答案: