overlay - Unable to add window android.view.ViewRoot$W@44da9bc0 -- permission denied for this window type

Question

I have prefer this post for example but I got the error at adding viewgroup into the windowmanager object, I have used the same class for the Service as posted into the question with no change where I can mistake I didn't gettting it

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

when I add view to the WindowManger

here is my manifest file

<?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>

error

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
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at android.app.ActivityThread.handleCreateService(ActivityThread.java:2790)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at android.app.ActivityThread.access$3200(ActivityThread.java:119)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1917)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at android.os.Handler.dispatchMessage(Handler.java:99)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at android.os.Looper.loop(Looper.java:123)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at android.app.ActivityThread.main(ActivityThread.java:4363)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at java.lang.reflect.Method.invokeNative(Native Method)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at java.lang.reflect.Method.invoke(Method.java:521)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at dalvik.system.NativeStart.main(Native Method)
09-27 18:49:23.571: ERROR/AndroidRuntime(653): Caused by: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRoot$W@44da9bc0 -- permission denied for this window type
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at android.view.ViewRoot.setView(ViewRoot.java:492)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at com.searce.testoverlay.HUD.onCreate(HUD.java:41)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     at android.app.ActivityThread.handleCreateService(ActivityThread.java:2780)
09-27 18:49:23.571: ERROR/AndroidRuntime(653):     ... 10 more

Answer 1

Try using this permission in AndroidManifest.

android.permission.SYSTEM_ALERT_WINDOW

on API >= 23 see