防止状态栏出现android（修改）

Question

我正在实现一个自助服务终端模式应用程序，并且我已经成功地使应用程序在 4.3 后没有状态栏出现全屏，但无法在 4.3 和 4.4 中隐藏状态栏，因为当我们在顶部向下滑动时出现状态栏屏幕。

我试着让它全屏

• 在清单中指定全屏主题
• 设置窗口标志即setFlags
• setSystemUiVisibility

可能重复但未找到具体解决方案

Permanently hide Android Status Bar

最后我想要的是，如何在活动中永久隐藏状态栏？在 android 4.3,4.4,5,6 版本中

Answer 1

我们无法阻止在 kitkat 设备中以全屏模式显示状态，所以做了一个仍然符合要求的 hack，即阻止状态栏扩展。

为此，该应用并未全屏显示。我们在状态栏上放置了一个覆盖层并消耗了所有输入事件。它阻止了状态扩展。

注意：

• customViewGroup 是自定义类，它扩展了任何 布局（框架，相对布局等）并消耗触摸事件。
• 消费触摸事件覆盖onInterceptTouchEvent方法 视图组并返回 true

更新

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

customViewGroup implementation

代码：

WindowManager manager = ((WindowManager) getApplicationContext()
            .getSystemService(Context.WINDOW_SERVICE));

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

    customViewGroup view = new customViewGroup(this);

    manager.addView(view, localLayoutParams);

Answer 2

在 Android M 中，您必须获得额外的权限才能制作叠加层。 android.permission.SYSTEM_ALERT_WINDOW 还不够！因此，我使用了 disableStatusBar() 中 Abhimaan 的答案中的代码，并且必须有意打开正确的设置对话框。我还在onDestroy() 中添加了删除视图，以便在应用程序退出时启用状态栏。我还将覆盖高度降低到 40，因为这似乎已经足够了。此处代码适用于 5.1 和 6.0。

public static final int OVERLAY_PERMISSION_REQ_CODE = 4545;
protected CustomViewGroup blockingView = null;

@Override
protected void onDestroy() {

    super.onDestroy();

    if (blockingView!=null) {
        WindowManager manager = ((WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE));
        manager.removeView(blockingView);
    }
}


@Override
protected void onCreate(Bundle savedInstanceState) {

        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {

            if (!Settings.canDrawOverlays(this)) {
                Toast.makeText(this, "Please give my app this permission!", Toast.LENGTH_SHORT).show();
                Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,Uri.parse("package:" + getPackageName()));
                startActivityForResult(intent, OVERLAY_PERMISSION_REQ_CODE);
            } else {
                disableStatusBar();
            }
        }
        else {
            disableStatusBar();
        }
}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == OVERLAY_PERMISSION_REQ_CODE) {
        if (!Settings.canDrawOverlays(this)) {
            Toast.makeText(this, "User can access system settings without this permission!", Toast.LENGTH_SHORT).show();
        }
        else
        { disableStatusBar();
        }
    }
}

protected void disableStatusBar() {

    WindowManager manager = ((WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE));

    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) (40 * getResources().getDisplayMetrics().scaledDensity);
    localLayoutParams.format = PixelFormat.TRANSPARENT;

    blockingView = new CustomViewGroup(this);
    manager.addView(blockingView, localLayoutParams);
}

Answer 3

对于我从事的一个项目，我找到了解决方案，但花了很长时间。 Stackoverflow 和其他地方的各种线程帮助我想出了它。这是在 Android M 上的一种解决方法，但效果很好。由于有人要求，所以我想如果它可以使任何人受益，我应该将其发布在这里。

现在已经有一段时间了，我不记得所有细节了，但 CustomViewGroup 是覆盖主 ViewGroup 的类，它检测到用户从顶部滑动以显示状态栏。但我们不想显示它，因此检测到用户的拦截并忽略任何进一步的操作，即 Android 操作系统不会收到打开隐藏状态栏的信号。

然后还包括显示和隐藏状态栏的方法，您可以将它们复制/粘贴到您想要显示/隐藏状态栏的代码中。

/**
 * This class creates the overlay on the status bar which stops it from expanding.
 */
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", "********** Status bar swipe intercepted");
        return true;
    }
}

public static void allowStatusBarExpansion(Context context) {
    CustomViewGroup view = new CustomViewGroup(context);
    WindowManager manager = ((WindowManager) context.getApplicationContext()
            .getSystemService(Context.WINDOW_SERVICE));
    manager.removeView(view);
}

// Stop expansion of the status bar on swipe down.
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 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;
    //http://stackoverflow.com/questions/1016896/get-screen-dimensions-in-pixels
    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);
}