问题
I am moving a new question from this one implementation 'com.android.support:appcompat-v7:28.0.0' because I solved my problem thanks to the answers but now my app is continuously crashing.
This is what happens: I build my apk, I send it to the emulator and to my device (galaxy a6+) and I get a "The program has been shut down" (don't know if terms are technically correct, I am translating from Italian) message after installing successfully. On a galaxy s5 the message is "error during data analysis" and never get to install it.
This is my build.gradle after the changes made thanks to the answers on this site : https://www.dropbox.com/sh/1vjmrh196bdy5gn/AADW-DG1YB10s-Csw_UrZtuYa?dl=0
Thank you for any clue.
回答1:
I was having the same problem as you and am following you from the previous question.
I have found a solution: First initialize the instance of firebase before using it by adding the line:
FirebaseApp.initializeApp(this);
before getting an instance of Firebase.

Then in build.gradle change the dependency
classpath 'com.google.gms:google-services:4.1.0'
to
classpath 'com.google.gms:google-services:4.0.0'
It seems that google-services:4.1.0 has an issue
来源:https://stackoverflow.com/questions/53132099/building-apk-successful-but-crashes-on-devices-and-emulator