问题
My problem is that when I ran my app and use my mobile device the app isn't updated with any of the changes I've made to the code. I've checked the 'Android Device Monitor' and it sees my phone. Yesterday I downloaded 'universal adb driver' because I was trying to print a logcat. I thought that downloading this driver despite already having USB google driver might have caused the issuse. I've uninstalled univeral adb driver but the problem persists. Can anybody help me
回答1:
I know I am late, but if anyone else comes here, run Build>Clean project.
It's a bug in Android studio. That crap is ancient, and still not fixed.
回答2:
Try Re-build the gradle. I should work for you. Sometimes if the build id processing and your usb cable is removed or not connected properly, there might be chance to get this issue.
Also, Check the error logs in the studio. They will tell you what exactly you need to do.
回答3:
Simply uninstall the application from your mobile device and then run your app again with your device connected and make sure to select the correct device when Android Studio prompts you to.
来源：https://stackoverflow.com/questions/29008761/android-studios-doesnt-update-app-on-mobile-device