如何禁用状态栏单击并在Android中下拉？

Question

如何禁用状态栏单击并在Android中下拉？我尝试了很多东西，但这不起作用。

Answer 1

在我看来，有2个选项：

选择1：你可以把在状态栏窗口禁用任何触摸或拉低。选项2：您也可以重写OnWindowFocusChanged（）方法，以在显示后立即关闭通知面板。

如何：

选项1：定义您的活动如下方法（preventStatusBarExpansion）和类（CustomViewGroup）。

public static void preventStatusBarExpansion(Context context) { 
    WindowManager manager = ((WindowManager) context.getApplicationContext() 
     .getSystemService(Context.WINDOW_SERVICE)); 

    Activity activity = (Activity)context; 
    WindowManager.LayoutParams localLayoutParams = new WindowManager.LayoutParams(); 
    localLayoutParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ERROR; 
    localLayoutParams.gravity = Gravity.TOP; 
    localLayoutParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE| 

    // this is to enable the notification to recieve touch events 
    WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL | 

    // Draws over status bar 
    WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN; 

    localLayoutParams.width = WindowManager.LayoutParams.MATCH_PARENT; 
    int resId = activity.getResources().getIdentifier("status_bar_height", "dimen", "android"); 
    int result = 0; 
    if (resId > 0) { 
     result = activity.getResources().getDimensionPixelSize(resId); 
    } 

    localLayoutParams.height = result; 

    localLayoutParams.format = PixelFormat.TRANSPARENT; 

    customViewGroup view = new customViewGroup(context); 

    manager.addView(view, localLayoutParams); 
} 

public static class customViewGroup extends ViewGroup { 

    public customViewGroup(Context context) { 
     super(context); 
    } 

    @Override 
    protected void onLayout(boolean changed, int l, int t, int r, int b) { 
    } 

    @Override 
    public boolean onInterceptTouchEvent(MotionEvent ev) { 
     Log.v("customViewGroup", "**********Intercepted"); 
     return true; 
    } 
} 

并在activity的onCreate方法中调用preventStatusBarExpansion方法。完成！

选项2：首先，添加以下权限到AndroidManifest.xml文件：

<uses-permission android:name="android.permission.EXPAND_STATUS_BAR" /> 

其次，在您的活动定义以下类范围的变量：

// To keep track of activity's window focus 
boolean currentFocus; 

// To keep track of activity's foreground/background status 
boolean isPaused; 

Handler collapseNotificationHandler; 

三，覆盖onWindowFocusChanged（布尔值）：

@Override 
public void onWindowFocusChanged(boolean hasFocus) { 

    currentFocus = hasFocus; 

    if (!hasFocus) { 

     // Method that handles loss of window focus 
     collapseNow(); 
    } 
} 

四，定义collapseNow（）;方法：

public void collapseNow() { 

    // Initialize 'collapseNotificationHandler' 
    if (collapseNotificationHandler == null) { 
     collapseNotificationHandler = new Handler(); 
    } 

    // If window focus has been lost && activity is not in a paused state 
    // Its a valid check because showing of notification panel 
    // steals the focus from current activity's window, but does not 
    // 'pause' the activity 
    if (!currentFocus && !isPaused) { 

     // Post a Runnable with some delay - currently set to 300 ms 
     collapseNotificationHandler.postDelayed(new Runnable() { 

      @Override 
      public void run() { 

       // Use reflection to trigger a method from 'StatusBarManager'     

       Object statusBarService = getSystemService("statusbar"); 
       Class<?> statusBarManager = null; 

       try { 
        statusBarManager = Class.forName("android.app.StatusBarManager"); 
       } catch (ClassNotFoundException e) { 
        e.printStackTrace(); 
       } 

       Method collapseStatusBar = null; 

       try { 

        // Prior to API 17, the method to call is 'collapse()' 
        // API 17 onwards, the method to call is `collapsePanels()` 

        if (Build.VERSION.SDK_INT > 16) { 
         collapseStatusBar = statusBarManager .getMethod("collapsePanels"); 
        } else { 
         collapseStatusBar = statusBarManager .getMethod("collapse"); 
        } 
       } catch (NoSuchMethodException e) { 
        e.printStackTrace(); 
       } 

       collapseStatusBar.setAccessible(true); 

       try { 
        collapseStatusBar.invoke(statusBarService); 
       } catch (IllegalArgumentException e) { 
        e.printStackTrace(); 
       } catch (IllegalAccessException e) { 
        e.printStackTrace(); 
       } catch (InvocationTargetException e) { 
        e.printStackTrace(); 
       } 

       // Check if the window focus has been returned 
       // If it hasn't been returned, post this Runnable again 
       // Currently, the delay is 100 ms. You can change this 
       // value to suit your needs. 
       if (!currentFocus && !isPaused) { 
        collapseNotificationHandler.postDelayed(this, 100L); 
       } 

      } 
     }, 300L); 
    } 
} 

最后，覆盖的onPause（）和方法的onResume：

@Override 
protected void onPause() { 
    super.onPause(); 

    // Activity's been paused  
    isPaused = true; 
} 

@Override 
protected void onResume() { 
    super.onResume(); 

    // Activity's been resumed 
    isPaused = false; 
} 

完成！

注意：在将应用程序置于Kiosk模式下时，我没有显示通知面板，所以我使用了第一个选项。 另一方面，第二个选项运行良好，但它允许通知面板在短时间内显示，用户可以快速单击通知面板顶部的设置图标以退出信息亭模式。

希望这会帮助你。 干杯！