Block/Disable android 中的状态栏 Tablet/Mobile

Question

我看过 Kioware 和 SureLock 应用程序。他们只是阻止平板电脑中的每个控件。我知道重写后退按钮并处理主页和最近的任务选项。但我不确定他们是如何设法控制系统栏上的设置选项的。设置出现几分之一秒然后消失。同样，向下滑动时出现的手机状态栏需要被阻止。

如果有人对此有想法，请分享。任何 guidance/help 表示赞赏。

Answer 1

您可以尝试使用 WindowManager 在所需位置添加透明 View（按照 this 示例）。这样，您将拦截来自用户的任何点击事件。

一定要设置合适的flags/type，因为需要覆盖系统栏：

    WindowManager.LayoutParams dismissParams = new WindowManager.LayoutParams(
                        viewWidth,
                        viewHeight,
                        WindowManager.LayoutParams.TYPE_SYSTEM_ALERT, //you can also try with TYPE_SYSTEM_OVERLAY, TYPE_SYSTEM_ERROR
                        WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
                        PixelFormat.TRANSPARENT);

Answer 2

诀窍是添加覆盖在系统栏上的透明自定义视图，这样所有用户交互（如触摸、拖动）都将被自定义视图消耗。

这是一个工作代码：

windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);

statusBarOverlay = new CustomViewGroup(this);

final 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 receive touch events
        WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |

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

localLayoutParams.width = WindowManager.LayoutParams.MATCH_PARENT;
localLayoutParams.height =   
   (int) (50 * getResources().getDisplayMetrics().scaledDensity);
localLayoutParams.format = PixelFormat.TRANSPARENT;

windowManager.addView(statusBarOverlay, localLayoutParams);

自定义 ViewGroup：

public 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) {
            return true;
        }
    }

尽管出于多种原因我已将锁定功能分离到不同的应用程序中，但我自己已经为我的应用程序完成了锁定功能。您可以询问更多信息，如果需要，我会把它们放在这里。

Answer 3

终于找到了解决上述问题的方法。 onWindowFocus change 我刚刚关闭了系统生成的对话框，我的问题就解决了。下面是示例代码。

@Override
     public void onWindowFocusChanged(boolean hasFocus) {
         super.onWindowFocusChanged(hasFocus);

      if(!hasFocus)
      {// Close every kind of system dialog 
          Intent closeDialog = new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS); 
          sendBroadcast(closeDialog); 

      }

     }

更新：

在移动端屏蔽在屏幕上向下滑动时出现的状态栏使用下面的方法。

private Handler collapseNotificationHandler;
            @Override
            public void onWindowFocusChanged(boolean hasFocus) {
                boolean currentFocus = hasFocus;
                if (!hasFocus) {
                    collapseNow(true,currentFocus);

                }

            }


    public void collapseNow(final boolean shouldCollapse, final boolean currentFocus ) {

                // 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 50 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(shouldCollapse);

                            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 50 ms. You can change this
                            // value to suit your needs.
                            if (!currentFocus && !isPaused) {
                                collapseNotificationHandler.postDelayed(this, 50);
                            }

                        }
                    }, 0);
                }   
            }

"isPaused" 布尔值，当应用程序处于暂停状态时设置为真。

Block/Disable android 中的状态栏 Tablet/Mobile

Block/Disable Statusbar in android Tablet/Mobile

android

kiosk-mode