尽管出现了 window 个弹出窗口、叠加层或对话框，但如何隐藏导航栏？

Question

我正在尝试创建一个在特定时间启动的全屏应用程序，当它启动时，它应该会自动变成全屏。全屏启动它没有问题。但是，如果存在弹出窗口或 windows，然后启动我的 activity，则导航栏永远不会隐藏（换句话说，不会实现全屏状态）。我制作了一个 5 秒的视频来演示这个问题。

您可以在此处查看错误：http://tinypic.com/player.php?v=2qkplwp%3E&s=9#.V3fZ8KLA3Fk

我已经尝试了所有带有标志的方法，但似乎无法完成。我环顾了 Playstore，似乎许多锁屏应用程序尤其可以轻松隐藏导航栏，尽管存在任何 popups\other 对话框（SlideLock、Echo Lock Screen）。

下面是我的简单activity代码：

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

windowlayout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#a9e487">

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Exit"
    android:id="@+id/button"
    android:layout_gravity="center"
    android:layout_marginTop="100dp" />
</LinearLayout>

MainActivity.java

public class MainActivity extends AppCompatActivity {

    final static WindowManager.LayoutParams params = new WindowManager.LayoutParams(
            WindowManager.LayoutParams.TYPE_SYSTEM_ERROR,
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
            WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
            WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS |
            WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION |
            WindowManager.LayoutParams.FLAG_FULLSCREEN |
            WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS |
            WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN, //Covers status bar
            PixelFormat.TRANSPARENT);

    final static int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.content_main);

        final View decorView = getWindow().getDecorView();
        decorView.setSystemUiVisibility(flags);

        final ViewGroup viewGroup = (ViewGroup) getLayoutInflater().inflate(R.layout.windowlayout, null);
        final WindowManager windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
        windowManager.addView(viewGroup, params);

        viewGroup.findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                windowManager.removeView(viewGroup);
            }
        });

    }

}

Answer 1

在 activity.

的 onCreate method 中使用这个

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

Answer 2

可能我获得了与您的目标相似的行为，但由于疼痛，我的回答需要审查。无论如何，这是我的解决方案。

我添加了两个组件：

折叠状态栏面板的方法
a listener to fire 全新activity 前面的所有活动

第一部分非常简单：您只需在 activity:

中使用此方法

private void collapseStatusBar(){
    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();
    }

}

对于第二部分，您向接收器发射编程意图，以便在堆栈顶部启动您的 activity

 Intent startIntent = new Intent(this, LaunchWakeupReceiver.class);
 PendingIntent wakeupIntent = PendingIntent.getBroadcast(this, 0, startIntent,PendingIntent.FLAG_UPDATE_CURRENT );
 AlarmManager alarm = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
 alarm.set(AlarmManager.RTC, (new Date()).getTime()+10000, wakeupIntent);

这是接收者：

public class LaunchWakeupReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(final Context context, Intent intent) {

        intent = new Intent(context,MainActivity.class);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(intent);
    }
}

因此，例如，您的主要 activity 可能是这样的：

public class MainActivity extends AppCompatActivity {

    ViewGroup viewGroup;
    WindowManager windowManager;

    final static WindowManager.LayoutParams params = new WindowManager.LayoutParams(
            WindowManager.LayoutParams.TYPE_SYSTEM_ERROR,
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
                    WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
                    WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS |
                    WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION |
                    WindowManager.LayoutParams.FLAG_FULLSCREEN |
                    WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS |
                    WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN, //Covers status bar
            PixelFormat.TRANSPARENT);

    final static int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;

    private static final String LAUNCHED = "launched";


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        addCoverView();

    }


    private void addCoverView(){

        final View decorView = getWindow().getDecorView();
        decorView.setSystemUiVisibility(flags);

        viewGroup = (ViewGroup) getLayoutInflater().inflate(R.layout.windowlayout, null);
        windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

        final SharedPreferences shP = PreferenceManager.getDefaultSharedPreferences(this);
        if (shP.contains(LAUNCHED)) {
            collapseStatusBar();
            windowManager.addView(viewGroup, params);
        }

        viewGroup.findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                windowManager.removeView(viewGroup);

            }
        });

        Intent startIntent = new Intent(this, LaunchWakeupReceiver.class);
        PendingIntent wakeupIntent = PendingIntent.getBroadcast(this, 0, startIntent,PendingIntent.FLAG_UPDATE_CURRENT );
        AlarmManager alarm = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
        alarm.set(AlarmManager.RTC, (new Date()).getTime()+10000, wakeupIntent);

        shP.edit().putBoolean(LAUNCHED,true).apply();


    }


    private void collapseStatusBar(){
        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();
        }

    }
}

我知道这个解决方案很粗糙，但在我的测试中，它是有效的。让我知道你的想法。

编辑

接收器部分实际上只是用于测试目的。所以 "LockActivity" 应该是这样的：

public class LockActivity extends AppCompatActivity {

    ViewGroup viewGroup;
    WindowManager windowManager;

    final static WindowManager.LayoutParams params = new WindowManager.LayoutParams(
            WindowManager.LayoutParams.TYPE_SYSTEM_ERROR,
            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
                    WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
                    WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS |
                    WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION |
                    WindowManager.LayoutParams.FLAG_FULLSCREEN |
                    WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS |
                    WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN, //Covers status bar
            PixelFormat.TRANSPARENT);

    final static int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
            | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
            | View.SYSTEM_UI_FLAG_FULLSCREEN
            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        addCoverView();

    }


    private void addCoverView(){

        final View decorView = getWindow().getDecorView();
        decorView.setSystemUiVisibility(flags);

        viewGroup = (ViewGroup) getLayoutInflater().inflate(R.layout.windowlayout, null);
        windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

        collapseStatusBar();
        windowManager.addView(viewGroup, params);

        viewGroup.findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                windowManager.removeView(viewGroup);

            }
        });


    }


    private void collapseStatusBar(){
        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();
        }

    }
}

Answer 3

This worked for me:

  mypopupWindow = PopupWindow(
                    view,
                    RelativeLayout.LayoutParams.MATCH_PARENT,
                    RelativeLayout.LayoutParams.MATCH_PARENT,
                    false
            )

或者

mypopupWindow.isFocusable = false

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