Android Design Support控件之DrawerLayout简单使用

Posted 2020-09-23 brucemengbm

DrawerLayout能够让我们在项目中非常方便地实现側滑菜单效果。如今主流的应用如QQ等都
採用的这样的效果。

这两天也是在学习android Design Support的相关知识。网上有关这方面的文章介绍非常多。可是为了方便以后使用，还是把学习的知识做个简单记录。这次的代码也是在上一篇博客Android Design Support控件介绍之TabLayout的基础上加入的布局和代码。
主界面布局：

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/drawer_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="200dp"
        android:layout_height="match_parent"
        android:layout_gravity="left"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/content_main"><!--content_main与上篇文章中一样-->
    </android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>

側滑菜单左側的布局

<?xml version="1.0" encoding="utf-8"?
>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="10dp">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="40dp"
        android:text="菜单ONE" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:text="菜单TWO" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:text="菜单THREE" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:text="菜单FOUR" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:text="菜单FIVE" />
</LinearLayout>

Fragment界面布局

<?
xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="10dp">
    <TextView
        android:id="@+id/content_tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="40dp"
        android:text="菜单ONE" />
</LinearLayout>

主界面代码，TestAdapter 及TestFragment代码也同上一篇文章一样。

public class MainActivity extends FragmentActivity {
    //便捷实现标签显示
    private TabLayout tab_layout;
    private ViewPager viewpager;
    private TestAdapter mAdapter;
    private List<Fragment> fragments;
    private List<String> titles;
    private DrawerLayout drawer_view;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.drawer_layout);
        initViews();
        initViewPages();
    }

    private void initViewPages() {
        fragments = new ArrayList<>();
        titles = new ArrayList<>();
        for (int i = 0; i < 4; i++) {
            String title="TAB" + i;
            titles.add(title);
            tab_layout.addTab(tab_layout.newTab().setText(title));//加入Tab标题
            Fragment fragment = new TestFragment();
            Bundle bundle = new Bundle();
            bundle.putString("content", "这是第" + i + "个Fragment页面");
            fragment.setArguments(bundle);
            fragments.add(fragment);
        }

        mAdapter = new TestAdapter(this.getSupportFragmentManager(), titles, fragments);
        viewpager.setAdapter(mAdapter);
        tab_layout.setupWithViewPager(viewpager);
        tab_layout.setTabsFromPagerAdapter(mAdapter);

    }

    private void initViews() {
        tab_layout = (TabLayout) findViewById(R.id.tab_layout);
        viewpager = (ViewPager) findViewById(R.id.viewpager);
        drawer_view=(DrawerLayout)findViewById(R.id.drawer_view);
        drawer_view.closeDrawer(GravityCompat.START);
    }
}

效果图：