DrawerLayout的基本使用（Google官方例子）

素颜马尾好姑娘i 2022-07-13 00:47 195阅读 0赞

一：MainActivity

package com.example.kirito.myapplication.testdrawlayout;
    
    import android.app.Activity;
    import android.app.Fragment;
    import android.app.SearchManager;
    import android.content.Intent;
    import android.content.pm.PackageManager;
    import android.content.res.Configuration;
    import android.os.Bundle;
    import android.os.PersistableBundle;
    import android.support.annotation.Nullable;
    import android.support.v4.widget.DrawerLayout;
    import android.support.v4.app.ActionBarDrawerToggle;
    import android.support.v7.app.AppCompatActivity;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.view.View;
    import android.widget.AdapterView;
    import android.widget.ArrayAdapter;
    import android.widget.ListView;
    import android.widget.Toast;
    
    import com.example.kirito.myapplication.R;
    
    /** * Created by kirito on 2016.12.17. */
    
    public class TestDrawerLayout extends AppCompatActivity { 
        private DrawerLayout drawerLayout;
        private ListView lv;
        private ActionBarDrawerToggle toggle;
        private CharSequence mTitle;
        private CharSequence mDrawerTitle;
        private String [] mPlanetTitle;
    
        @Override
        protected void onCreate(@Nullable Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.drawer_layout);
    
            mTitle = mDrawerTitle = getTitle();
            drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
            lv = (ListView) findViewById(R.id.lv);
            mPlanetTitle = getResources().getStringArray(R.array.planets_array);//获取values里的string-array
    
            lv.setAdapter(new ArrayAdapter<String>(this,R.layout.drawer_list_item,mPlanetTitle));
            lv.setOnItemClickListener(new DrawerItemClickListener());
    
            toggle = new ActionBarDrawerToggle(this,
                    drawerLayout,R.mipmap.ic_launcher,R.string.drawer_open,R.string.drawer_close){
                @Override
                public void onDrawerOpened(View drawerView) {
                    super.onDrawerOpened(drawerView);
                    getSupportActionBar().setTitle("please choose");
                    invalidateOptionsMenu();// Call onPrepareOptionsMenu()
                }
    
                @Override
                public void onDrawerClosed(View drawerView) {
                    super.onDrawerClosed(drawerView);
                    getSupportActionBar().setTitle(mDrawerTitle);
                    invalidateOptionsMenu();
                }
            };
    
            drawerLayout.setDrawerListener(toggle);
            //在左上角显示按钮并且可点击
            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
            getSupportActionBar().setHomeButtonEnabled(true);
    
            if (savedInstanceState == null){
                selectItem(0);
            }
        }
    
        //重写setTitle方法
        @Override
        public void setTitle(CharSequence title) {
            mTitle = title;
            getSupportActionBar().setTitle(title);
        }
    
        //创建自定义menu
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            getMenuInflater().inflate(R.menu.menu_main,menu);
            return super.onCreateOptionsMenu(menu);
        }
    
        //当DrawerLayout打开的时候，隐藏右上角的搜索按钮
        @Override
        public boolean onPrepareOptionsMenu(Menu menu) {
            boolean isOpen = drawerLayout.isDrawerOpen(lv);
            menu.findItem(R.id.main).setVisible(!isOpen);
            return super.onPrepareOptionsMenu(menu);
        }
    
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            if (toggle.onOptionsItemSelected(item)){
                return true;
            }
            switch (item.getItemId()){
                case R.id.main://调用手机自带的搜索工具搜索当前title
                    Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
                    intent.putExtra(SearchManager.QUERY,getSupportActionBar().getTitle());
                    if (intent.resolveActivity(getPackageManager()) != null){
                        startActivity(intent);
                    }else {
                        Toast.makeText(this,"app not avaliable",Toast.LENGTH_SHORT).show();
                    }
                    return true;
                default: return super.onOptionsItemSelected(item);
            }
        }
    
        private class DrawerItemClickListener implements ListView.OnItemClickListener{ 
    
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                selectItem(position);
            }
        }
    
        //当选择侧边栏（DrawerLayout里的item）触发的点击事件
        private void selectItem(int position) {
            Fragment fragment = new ContentFragment();
            Bundle args = new Bundle();
            args.putString("text",mPlanetTitle[position]);
            fragment.setArguments(args);
            //替换原来的fragment
            getFragmentManager().beginTransaction().replace(R.id.content_frame,fragment).commit();
    
            // update selected item and title, then close the drawer
            // Highlight the selected item, update the title, and close the drawer
            lv.setItemChecked(position,true);
            //更换title
            mDrawerTitle = mPlanetTitle[position];
            drawerLayout.closeDrawer(lv);
        }
    
        /** * When using the ActionBarDrawerToggle, you must call it during * onPostCreate() and onConfigurationChanged()... */
    
        @Override
        public void onPostCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
            super.onPostCreate(savedInstanceState, persistentState);
            toggle.syncState();
        }
    
        @Override
        public void onConfigurationChanged(Configuration newConfig) {
            super.onConfigurationChanged(newConfig);
            toggle.onConfigurationChanged(newConfig);
        }
    }

二：Fragment

package com.example.kirito.myapplication.testdrawlayout;
    
    import android.app.Fragment;
    import android.os.Bundle;
    import android.support.annotation.Nullable;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.TextView;
    
    import com.example.kirito.myapplication.R;
    
    /** * Created by kirito on 2016.12.17. */
    
    public class ContentFragment extends Fragment { 
    
        @Nullable
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            View view = inflater.inflate(R.layout.frame_layout,container,false);
            TextView tv = (TextView) view.findViewById(R.id.tv_drawer);
            tv.setText(getArguments().getString("text"));
            return view;
        }
    }

三：自定义menu

<?xml version="1.0" encoding="utf-8"?>
    <menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto">
        <item android:id="@+id/main" android:icon="@drawable/search" android:title="select" app:showAsAction="ifRoom|withText" />
    </menu>

四：布局文件  
1）主布局文件

<?xml version="1.0" encoding="utf-8"?>
    <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
                  android:id="@+id/drawer_layout"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent">
    
        <FrameLayout
            android:id="@+id/content_frame"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
    
        <ListView
            android:id="@+id/lv"
            android:choiceMode="singleChoice"
            android:layout_gravity="start"
    
     /*The drawer view (the ListView) must specify its horizontal gravity with the android:layout_gravity attribute. To support right-to-left (RTL) languages, 
    specify the value with "start" instead of "left" 
    (so the drawer appears on the right when the layout is RTL).*/
    
            android:divider="@android:color/transparent"
            android:layout_width="240dp"
            android:layout_height="match_parent"/>
    
    </android.support.v4.widget.DrawerLayout>

2）fragment布局文件

<?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">
    
        <TextView android:id="@+id/tv_drawer" android:textSize="25sp" android:layout_width="wrap_content" android:layout_height="wrap_content"/>
    </LinearLayout>

3）Drawer list item布局文件

[参考][Link 1]

显示效果：  
![1][]

![2][]

[Link 1]: https://developer.android.com/training/implementing-navigation/nav-drawer.html#top
[1]: /images/20220713/adcda89bee9b49ba93a032988d3a9240.png
[2]: /images/20220713/e4f67b6a812c498884d8dd4312cac8c4.png