java - Unable to add view to a service in Android -


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i want add imageview service , such appears on top of other activities giving error : detail below

code: androidmainfest.xml

<uses-permission android:name="android.permission.system_alert_window"/> <service android:name=".toggleheadservice"/>

code: toggleheadservice.java

public class toggleheadservice extends service{   private windowmanager windowmanager;  private imageview togglehead;   @override  public ibinder onbind(intent intent) {      return null;  }   @override  public void oncreate() {      super.oncreate();      togglehead=new imageview(this);       togglehead.setimageresource(r.drawable.ic_brightness_high_black_48dp);      windowmanager = (windowmanager) getsystemservice(window_service);      windowmanager.layoutparams params = new windowmanager.layoutparams(              windowmanager.layoutparams.wrap_content,              windowmanager.layoutparams.wrap_content,              windowmanager.layoutparams.type_system_alert,              windowmanager.layoutparams.flag_not_focusable                      | windowmanager.layoutparams.flag_not_touch_modal,              pixelformat.translucent);      params.gravity = gravity.top | gravity.left;      params.x = 0;      params.y = 100;      windowmanager.addview(togglehead, params);    }   @override  public void ondestroy() {      super.ondestroy();      if(togglehead!=null)windowmanager.removeview(togglehead);  } }

error: got

java.lang.runtimeexception: unable create service com.betatech.alex.toggle.toggleheadservice: android.view.windowmanager$badtokenexception: unable add window android.view.viewrootimpl$w@3cf2926d -- permission denied window type caused by: android.view.windowmanager$badtokenexception: unable add window android.view.viewrootimpl$w@3cf2926d -- permission denied window type

the permission should be:

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

notice lowercase "android.permission".


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