Android Run App Warning: The application could not be installed: INSTALL_FAILED_TEST_ONLY

1. Questions

The newly installed Android studio (version 3.5.2) in the notebook runs the simplest program. The error prompt is as follows

The application could not be installed: INSTALL_FAILED_TEST_ONLY

2. Analysis

The Android manifest.xml file in advanced Android studio is as follows by default

android:testOnly="true"

3. Solutions

I tried to install with the following command and failed

adb install -t app-debug.apk

Then I tried to add the following to androidmanifest. XML, and it failed

android:testOnly="false"

Finally, I set the gradle. Properties global configuration in the project as follows, and then it runs successfully.

android.injected.testOnly=false

Another way is to build APK (s) directly in as

Build->Build Bundle(s)/Apk(s)-> Build Apk(s)

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