How To Add The Custom Button On Google's(device) Native Application In Android?

I want to add one button on google(device)'s native application Like(Google Map),Using this button I want to open my application. I have do some work regarding that. Using Accessi

Solution 1:

As per my understanding, you want to show a UI on top of google application but once your UI is evoked you are not able to send the touch to the google application over which you evoked your UI which is very obvious as focus is now on your UI. I'll suggest you to use a Service and bind your UI to it and use WindowManager.LayoutParams with appropriate flags. You can follow this link

https://github.com/henrychuangtw/Android-ChatHead/blob/master/app/src/main/java/henrychuang/tw/chatheadmsg/ChatHeadService.java

to get an idea how to do it. Instead of chathead UI you have to use your UI.