android - Display layout every activity visit -

hi goal display layout containing video in every activity visited chat application possible?

if yes please guide me approach thank you.

i know possible if use fragment our app approach using lot of activities

step-1: add android.permission.system_alert_window permission androidmanifest.xml file. permission allows app create windows , shown on top of other apps.

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

step-2: create layout of chat head want display.

 <?xml version="1.0" encoding="utf-8"?> <relativelayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="65dp"     android:id="@+id/chat_head_root"     android:layout_height="wrap_content"     android:orientation="vertical">      <!--profile image chat head.-->     <imageview         android:id="@+id/chat_head_profile_iv"         android:layout_width="60dp"         android:layout_height="60dp"         android:layout_margintop="8dp"         android:src="@drawable/ic_android_circle"         tools:ignore="contentdescription"/>      <!--close button-->     <imageview         android:id="@+id/close_btn"         android:layout_width="26dp"         android:layout_height="26dp"         android:layout_marginleft="40dp"         android:src="@drawable/ic_close"         tools:ignore="contentdescription"/> </relativelayout> 

now create service called chatheadservice. whenever want display chat head, start service using startservice() command. in oncreate() of service add layout of chat head @ top-left corner of window.

to drag chat head along user’s touch, have override ontouchlistener().and implement onclick stop service.

service class

import android.app.service; import android.content.intent; import android.graphics.pixelformat; import android.os.ibinder; import android.view.gravity; import android.view.layoutinflater; import android.view.motionevent; import android.view.view; import android.view.windowmanager; import android.widget.imageview;  public class chatheadservice extends service {      private windowmanager mwindowmanager;     private view mchatheadview;      public chatheadservice() {     }      @override     public ibinder onbind(intent intent) {         return null;     }      @override     public void oncreate() {         super.oncreate();         //inflate chat head layout created         mchatheadview = layoutinflater.from(this).inflate(r.layout.layout_chat_head, null);          //add view window.         final windowmanager.layoutparams params = new windowmanager.layoutparams(                 windowmanager.layoutparams.wrap_content,                 windowmanager.layoutparams.wrap_content,                 windowmanager.layoutparams.type_phone,                 windowmanager.layoutparams.flag_not_focusable,                 pixelformat.translucent);          //specify chat head position         params.gravity = gravity.top | gravity.left;        //initially view added top-left corner         params.x = 0;         params.y = 100;          //add view window         mwindowmanager = (windowmanager) getsystemservice(window_service);         mwindowmanager.addview(mchatheadview, params);          //set close button.         imageview closebutton = (imageview) mchatheadview.findviewbyid(r.id.close_btn);         closebutton.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view v) {                 //close service , remove chat head window                 stopself();             }         });          //drag , move chat head using user's touch action.         final imageview chatheadimage = (imageview) mchatheadview.findviewbyid(r.id.chat_head_profile_iv);         chatheadimage.setontouchlistener(new view.ontouchlistener() {             private int lastaction;             private int initialx;             private int initialy;             private float initialtouchx;             private float initialtouchy;              @override             public boolean ontouch(view v, motionevent event) {                 switch (event.getaction()) {                     case motionevent.action_down:                          //remember initial position.                         initialx = params.x;                         initialy = params.y;                          //get touch location                         initialtouchx = event.getrawx();                         initialtouchy = event.getrawy();                          lastaction = event.getaction();                         return true;                     case motionevent.action_up:                         //as implemented on touch listener action_move,                         //we have check if previous action action_down                         //to identify if user clicked view or not.                         if (lastaction == motionevent.action_down) {                             //open chat conversation click.                             intent intent = new intent(chatheadservice.this, chatactivity.class);                             intent.addflags(intent.flag_activity_new_task);                             startactivity(intent);                              //close service , remove chat heads                             stopself();                         }                         lastaction = event.getaction();                         return true;                     case motionevent.action_move:                         //calculate x , y coordinates of view.                         params.x = initialx + (int) (event.getrawx() - initialtouchx);                         params.y = initialy + (int) (event.getrawy() - initialtouchy);                          //update layout new x & y coordinate                         mwindowmanager.updateviewlayout(mchatheadview, params);                         lastaction = event.getaction();                         return true;                 }                 return false;             }         });     }      @override     public void ondestroy() {         super.ondestroy();         if (mchatheadview != null) mwindowmanager.removeview(mchatheadview);     } } 

sample activity

import android.content.intent; import android.net.uri; import android.os.build; import android.os.bundle; import android.provider.settings; import android.support.v7.app.appcompatactivity; import android.view.view; import android.widget.toast;  public class mainactivity extends appcompatactivity {     private static final int code_draw_over_other_app_permission = 2084;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          //check if application has draw on other apps permission or not?         //this permission default available api<23. api > 23         //you have ask permission in runtime.         if (build.version.sdk_int >= build.version_codes.m && !settings.candrawoverlays(this)) {              //if draw on permission not available open settings screen             //to grant permission.             intent intent = new intent(settings.action_manage_overlay_permission,                     uri.parse("package:" + getpackagename()));             startactivityforresult(intent, code_draw_over_other_app_permission);         } else {             initializeview();         }     }      /**      * set , initialize view elements.      */     private void initializeview() {         findviewbyid(r.id.notify_me).setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view view) {                 startservice(new intent(mainactivity.this, chatheadservice.class));                 finish();// comment if want activity not close.             }         });     }      @override     protected void onactivityresult(int requestcode, int resultcode, intent data) {         if (requestcode == code_draw_over_other_app_permission) {              //check if permission granted or not.             if (resultcode == result_ok) {                 initializeview();             } else { //permission not available                 toast.maketext(this,                         "draw on other app permission not available. closing application",                         toast.length_short).show();                  finish();             }         } else {             super.onactivityresult(requestcode, resultcode, data);         }     } }