靜態添加fragment/小心有坑的地方

靜態添加fragment有坑的地方是：在xml中加入fragment需要設置id屬性

1，靜態添加fragment

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <fragment
        android:id="@+id/first_fragment"//沒有加入唯一標識符id運行後會報錯，Must specify unique android:id, android:tag, or have a parent with an id for com.example.li.fragmentui.RightFragment
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:name="com.example.li.fragmentui.RightFragment"/>
</LinearLayout>

碎片代碼

public class RightFragment extends Fragment {
    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.right_fragment, container,false);
        return view;
    }
}

Activity中的代碼

public class MyActivity extends FragmentActivity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.content);
    }
}