The application could not be installed: INSTALL_ FAILED_ TEST_ ONLY

Development platform

Android Studio

Error description

During real machine compilation, debugging and installation , Display installation failure . Note that if the compilation passes but the installation fails .

Error screenshots

Solution

First step ：
stay Gradle Script Under the document gradle.properties Add the following sentence to the document android.injected.testOnly=false

Here, a prompt will pop up after modifying something （ As shown in step 4 ）, Be sure to click Sync Now, Then wait for the progress bar below to finish . You can't run the program again until you finish it .

The second step ：
stay app Under the manifests Under folder AndroidManifest.xml Add the following code under the file ：android:testOnly="false"

Finally, rerun the code , After the code is compiled, the phone will pop up the installation page