如何在操作栏中设置右切换按钮？

Question

我有一个操作栏。它有左右两个抽屉。

对于左侧，我使用左上角的操作栏切换按钮，如下图所示。我可以把那个切换按钮也放在右边吗？

我可以使用自定义线性布局视图 (ImageView - EditText - ImageView) 将其添加到 getActionBar.setCustomView() 方法并在 imageview 上实现点击侦听器以显示抽屉。

我的问题是，android 是否提供像左一样的右切换按钮？

Answer 1

您必须对 .xml 文件和 Java 代码进行一些更改。

第一步

让我们从您的 .xml 文件开始。

代码

首先FrameLayout：代表操作栏，注意我们有ImageView 称为drawer_indicator，这是我们的正确切换。

第二个FrameLayout：代表我们的片段容器。

 <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >
    
        <!-- Action-bar looking view -->
    
        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="@dimen/actionbar_dimen"
            android:background="@color/blue" >
    
            <ImageView
                android:id="@+id/drawer_indicator"
                android:layout_width="@dimen/actionbar_dimen"
                android:layout_height="@dimen/actionbar_dimen"
                android:layout_gravity="right"
                android:background="@drawable/drawer_selector"
                android:scaleType="centerInside" />
    
            <TextView
                android:id="@+id/indicator_style"
                android:layout_width="wrap_content"
                android:layout_height="@dimen/actionbar_dimen"
                android:layout_gravity="center"
                android:background="@drawable/drawer_selector"
                android:gravity="center"
                android:paddingLeft="12dp"
                android:paddingRight="12dp"
                android:text="@string/tests"
                android:textColor="@android:color/white"
                android:textStyle="bold" />
    
    
        </FrameLayout>
  <!-- Action-bar Ends -->



    <!-- Drawer Layout -->

        <android.support.v4.widget.DrawerLayout
            android:id="@+id/drawer_layout"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1" >
    
         <!-- our Fragment Content-->

            <FrameLayout
                android:id="@+id/view_content"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="@color/light_gray"
                android:gravity="center" />
    <!-- slide menu  android:layout_gravity="end" to make it come from right-->
            <LinearLayout
                android:id="@+id/drawer_content"
                android:layout_width="240dp"
                android:layout_height="match_parent"
                android:layout_gravity="end"    
                android:background="@android:color/white"
                android:gravity="center"
                android:orientation="vertical" >
    
               
             <!-- drawer list-->
                <ListView
                    android:id="@+id/DrawerList"
                    android:layout_width="240dp"
                    android:layout_height="match_parent"
                     />
            </LinearLayout>
        </android.support.v4.widget.DrawerLayout>
    
    </LinearLayout>

第二步

从此链接获取DrawerArrowDrawable

private DrawerArrowDrawable drawerArrowDrawable;
    private float offset;
    private boolean flipped;
    ListView DrawerList;
    DrawerLayout drawer;

    @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            // to make activity full screen 
            requestWindowFeature(Window.FEATURE_NO_TITLE);
            getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                    WindowManager.LayoutParams.FLAG_FULLSCREEN);
         // it must before setContentView
            setContentView(R.layout.home_view);
            
            // drawer list
            DrawerList = (ListView) findViewById(R.id.DrawerList);

           // drawer item list
            ArrayList<DrawerItem> Items = new ArrayList<DrawerItem>();
            // fill arraylist 
            Items.add(new DrawerItem(getResources().getString(R.string.tests),
                    R.drawable.test));
            // drawer adapter 
            DrawerAdapter adapter = new DrawerAdapter(this, Items);
     // set adapter to our drawer list
            DrawerList.setAdapter(adapter);
    
             // attach listener to drawer list 
            DrawerList.setOnItemClickListener(new OnItemClickListener() {
    
                @Override
                public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                        long arg3) {
    
                    // handle select item here
                }
            });
             // initialize our drawer layout 
            drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
           // right toggle button 
            final ImageView imageView = (ImageView) findViewById(R.id.drawer_indicator);
            final Resources resources = getResources();
           // its custom class 
            drawerArrowDrawable = new DrawerArrowDrawable(resources);
            drawerArrowDrawable.setStrokeColor(resources
                    .getColor(R.color.light_gray));
            imageView.setImageDrawable(drawerArrowDrawable);
    
            drawer.setDrawerListener(new DrawerLayout.SimpleDrawerListener() {
                @Override
                public void onDrawerSlide(View drawerView, float slideOffset) {
                    offset = slideOffset;
    
                    // Sometimes slideOffset ends up so close to but not quite 1 or 0.
                    if (slideOffset >= .995) {
                        flipped = true;
                        drawerArrowDrawable.setFlip(flipped);
                    } else if (slideOffset <= .005) {
                        flipped = false;
                        drawerArrowDrawable.setFlip(flipped);
                    }
    
                    drawerArrowDrawable.setParameter(offset);
                }
            });
    
            
    // attach listener to toggle image view 
            imageView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    
                    openDrawer();
                }
            });
    }

我希望你清楚。