How to install/run a signed app to view the error log?

Question

I am developing an app and direct testo on mobile (LGE API Level 16) .

When testo, runs normal. But when I generated a signed apk, and try to install this apk on the same phone it just says: Application not installed.

This happened after I added in Gradle the module-to-line level:

compile 'com.google.firebase:firebase-core:9.6.1'

And in Gradle at project level:

classpath 'com.google.gms:google-services:3.0.0'

And added the project to the firebase

I’m kind of afraid this app won’t run on mobile phones when you’re on Google Play.

The minSdkVersion is 9.

The question is:

How to install/run a signed app to view the error log, to know why it was not installed.

Answer 1

Good. Thanks to friend’s comment ramaral I was able to solve the problem.

I installed the app via adb from Android Sdk. How?

Following that answer here:

Running the following command on the terminal:

adb install -r xyz.apk 

Then gave the following message:

Failure [INSTALL_PARSE_FAILED_NO_CERTIFICATES]

As if I had generated the signed apk?

What I did then?

I removed the file . apk and the file . jks generated earlier because I was just reusing and recreating those files.

I ran the installation via adb again and finally successfully installed the application.

That’s it.

Answer 2

Install via Androidstudio.

In the menu of Android Studio choose build -> Edit Build Types....
In the window shown select tab Signing and click on the sign +.
Fill in the fields on the right side.

Select the tab Build Types and choice release.

No Combobox Signing Config choosing config(or the name given in the previous step)

Close the window.
On the left edge of Android Studio click on Build Variants.
In the column Build Variant altere of debug for relapse.

Run the app as you normally do(icon with green arrow).