java - 将抽屉导航添加到空白 Activity

Question

我在空白 Activity (Android Studio)上创建了整个项目。我想添加一个抽屉导航，而不妨碍我以前的代码。有没有办法将抽屉导航添加到空白 Activity ，如果是，请指导。

Answer 1

第 1 步:将导航 View 包含到您的 xml 文件中，该文件将因您创建时的 Activity 而膨胀。

<?xml version="1.0" encoding="utf-8"?>

<include
    layout="@layout/app_bar_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

<android.support.design.widget.NavigationView
    android:id="@+id/nav_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:fitsSystemWindows="true"
    app:headerLayout="@layout/nav_header_main"
    app:menu="@menu/activity_main_drawer" />

第2步:初始化 View

 private NavigationView navigationView;
private DrawerLayout drawer;

第3步:发送抽屉关闭和打开事件

ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.openDrawer, R.string.closeDrawer) {

        @Override
        public void onDrawerClosed(View drawerView) {
            // Code here will be triggered once the drawer closes as we dont want anything to happen so we leave this blank
            super.onDrawerClosed(drawerView);
        }

        @Override
        public void onDrawerOpened(View drawerView) {
            // Code here will be triggered once the drawer open as we dont want anything to happen so we leave this blank
            super.onDrawerOpened(drawerView);
        }
    };

    //Setting the actionbarToggle to drawer layout
    drawer.setDrawerListener(actionBarDrawerToggle);

    //calling sync state is necessary or else your hamburger icon wont show up
    actionBarDrawerToggle.syncState();
}

希望这有助于如何设置抽屉导航。