相关疑难解决方法(0)

我比较喜欢这篇文章但是我在将viewgroup添加到windowmanager对象时遇到了错误,我已经使用相同的服务类来发布到问题而没有任何变化,我可能会误认为我没有得到它

WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
wm.addView(mView, params); // here

当我向WindowManger添加视图时

这是我的清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.searce.testoverlay"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="7" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name="TestOverlayActivity"
                      android:label="@string/app_name">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
        <service android:enabled="true" android:name=".HUD"></service>
    </application>
</manifest>

错误

09-27 18:49:23.561: ERROR/AndroidRuntime(653): Uncaught handler: thread main exiting due to uncaught exception
09-27 18:49:23.571: ERROR/AndroidRuntime(653): java.lang.RuntimeException: Unable to create service com.searce.testoverlay.HUD: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRoot$W@44da9bc0 -- permission denied for this window type …

我工作的一个应用程序,我需要显示一些信息的窗口ON未解锁手机的锁屏(键盘保护).我想我可以用WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG做到这一点

但每次我的应用程序崩溃时出现以下错误:

android.view.WindowManager $ BadTokenException:无法添加窗口android.view.ViewRootImpl$W@40ec8528 - 此窗口类型的权限被拒绝

这些帖子(这里,这里和这里)都给出了相同的答案.在清单文件中添加以下权限.

android.permission.SYSTEM_ALERT_WINDOW

我已经实现的解决方案,但我仍然得到相同的错误.我知道我做错了什么？

以下是我的清单文件中的权限:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.droidpilot.keyguardwindow" >

<uses-sdk
    android:minSdkVersion="16"
    android:targetSdkVersion="21" />

<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.VIBRATE" />

这是我用来将Window添加到锁定屏幕的代码

WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE);
    LayoutInflater mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    mView = mInflater.inflate(R.layout.lock_screen_notif, null);

    WindowManager.LayoutParams params = new WindowManager.LayoutParams(
            WindowManager.LayoutParams.WRAP_CONTENT,
            WindowManager.LayoutParams.WRAP_CONTENT,
            WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG,
            WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED …

我正在使用叠加权限在我的应用中显示某些信息.在API 23 - 25上运行它工作正常(请求许可,授予等等)

无法添加窗口android.view.ViewRoot$W@44da9bc0 - 此窗口类型的权限被拒绝 ).(非常感谢ceph3us!)

在API 26上尝试相同我收到一个错误,基本上"调用时窗口类型2002的权限被拒绝"

windowManager.addView(frameLayout, params);

Google是否改变了方式,叠加效果如何？任何想法,如何将我的文本作为叠加到Android 8(奥利奥),API 26的屏幕上？谢谢你的想法!

这是错误日志:

08-24 16:41:56.730 2615-2615/net.zwittscha.testoverlay E/AndroidRuntime: FATAL EXCEPTION: main
Process: net.zwittscha.testoverlay, PID: 2615
java.lang.RuntimeException: Unable to start activity ComponentInfo{net.zwittscha.testoverlay/net.zwittscha.testoverlay.MainActivity}: 
                android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@6fa0089 -- 
                permission denied for window type 2002
 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
 at android.app.ActivityThread.-wrap11(Unknown Source:0)
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
 at android.os.Handler.dispatchMessage(Handler.java:105)
 at android.os.Looper.loop(Looper.java:164)
 at android.app.ActivityThread.main(ActivityThread.java:6541)
 at java.lang.reflect.Method.invoke(Native Method)
 at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
            Caused by: android.view.WindowManager$BadTokenException: 
            Unable to add window android.view.ViewRootImpl$W@6fa0089 -- 
            permission denied for …