【Android】19、使用碎片

1、新建佈局文件，分別爲fragment1和fragment2

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#FF0">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="This is the first fragment!"
        android:textSize="28sp"
        android:textColor="#000"/>

</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#0FF">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="This is the second fragment!"
        android:textSize="28sp"
        android:textColor="#F00"/>

</LinearLayout>

2、添加Fragment1.java和Fragment2.java 代碼如下：

public class Fragment1 extends Fragment{
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment1, container, false);
    }
}

public class Fragment2 extends Fragment{
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fragment2, container, false);
    }
}

3、修改mainactivity.xml佈局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">
    <fragment
        android:name="com.wxy.fragment.Fragment1"
        android:id="@+id/fragment1"
        android:layout_width="0px"
        android:layout_weight="1"
        android:layout_height="match_parent"/>
    <fragment
        android:name="com.wxy.fragment.Fragment2"
        android:id="@+id/fragment2"
        android:layout_width="0px"
        android:layout_weight="1"
        android:layout_height="match_parent"/>
</LinearLayout>