Android Launcher 隐藏和开启底部虚拟按键（动态更改）

Posted 2021-12-20 王睿丶

方法一：

这里我们可以写一个工具类 KeyButtonControl.java

class KeyButtonControl 

    private static final String TAG = "KeyButtonControl";
    public static final String STATUS_BAR_SERVICE = "statusbar";
    public static final String CLASS_STATUS_BAR_MANAGER = "android.app.StatusBarManager";
    public static final String METHOD_DISABLE = "disable";
    /*public static final int STATUS_BAR_DISABLE_HOME = 0x00200000;// 为View.STATUS_BAR_DISABLE_HOME的值
    public static final int STATUS_BAR_DISABLE_BACK = 0x00400000;// 为View.STATUS_BAR_DISABLE_BACK的值
    public static final int STATUS_BAR_DISABLE_RECENT = 0x01000000;// 为View.STATUS_BAR_DISABLE_RECENT的值
    public static final int STATUS_BAR_DISABLE_EXPAND = 0x00010000;//整形标识
    public static final int STATUS_BAR_DISABLE_NONE = 0x00000000;//取消StatusBar所有disable属性，即还原到最最原始状态*/

    /**
     * 隐藏Back按键
     */
    public static void hideBackKey(Context mContext)
        try 
            @SuppressLint("WrongConstant") Object service = mContext.getSystemService(STATUS_BAR_SERVICE);
            Class<?> statusBarManager = Class.forName(CLASS_STATUS_BAR_MANAGER);
            Method disable = statusBarManager.getMethod(METHOD_DISABLE,
                    int.class);
            disable.invoke(service, 0x00400000);
            Log.i(TAG,"mdm hideBackKey");
         catch (Exception e) 
            e.printStackTrace();
        
    
//
    /**
     * 隐藏Home按键
     */
    public static void hideHomeKey(Context mContext)
        try 
            @SuppressLint("WrongConstant") Object service = mContext.getSystemService(STATUS_BAR_SERVICE);
            Class<?> statusBarManager = Class.forName(CLASS_STATUS_BAR_MANAGER);
            Method disable = statusBarManager.getMethod(METHOD_DISABLE,
                    int.class);
            disable.invoke(service, 0x00200000);
            Log.i(TAG,"mdm hideHomeKey");
         catch (Exception e) 
            e.printStackTrace();
        
    
//
    /**
     * 隐藏Task按键
     */
    public static void hideTaskKey(Context mContext)
        try 
            @SuppressLint("WrongConstant") Object service = mContext.getSystemService(STATUS_BAR_SERVICE);
            Class<?> statusBarManager = Class.forName(CLASS_STATUS_BAR_MANAGER);
            Method disable = statusBarManager.getMethod(METHOD_DISABLE,
                    int.class);
            disable.invoke(service, 0x00200000 | 0x00400000 | 0x01000000);
            Log.i(TAG,"mdm hideBackKey");
         catch (Exception e) 
            e.printStackTrace();
        
    

    /**
     * 隐藏全部按键
     */
    public static void hideAllKey(Context mContext)
        try 
            @SuppressLint("WrongConstant") Object service = mContext.getSystemService(STATUS_BAR_SERVICE);
            Class<?> statusBarManager = Class.forName(CLASS_STATUS_BAR_MANAGER);
            Method disable = statusBarManager.getMethod(METHOD_DISABLE,
                    int.class);
            disable.invoke(service, 0x00200000 | 0x00400000 | 0x01000000);
            Log.i(TAG,"mdm hideBackKey");
         catch (Exception e) 
            e.printStackTrace();
        
    

    /**
     * 显示全部按键
     */
    public static void showAllKey(Context mContext)
        try 
            @SuppressLint("WrongConstant") Object service = mContext.getSystemService(STATUS_BAR_SERVICE);
            Class<?> statusBarManager = Class.forName(CLASS_STATUS_BAR_MANAGER);
            Method disable = statusBarManager.getMethod(METHOD_DISABLE,
                    int.class);
            disable.invoke(service,  0x00000000);
            Log.i(TAG,"mdm showAllKey");
         catch (Exception e) 
            e.printStackTrace();
        
    

方法二：

frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
将 VISIBLE 更改为 INVISIBLE 即可

 		getBackButton().setVisibility(disableBack      ? View.INVISIBLE : View.VISIBLE);
        getHomeButton().setVisibility(disableHome      ? View.INVISIBLE : View.VISIBLE);
        getRecentsButton().setVisibility(disableRecent ? View.INVISIBLE : View.VISIBLE);

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