I have an issue revolving around android:supportsRtl, though it’s certainly not specific to that property. Let me start by saying that when invoking the Gradle task :app:processDebugManifest everything is shiny.
However, with :app:processDebugUnitTestManifest, I got an error:
Manifest merger failed : Attribute application@supportsRtl value=(false) from [:app] AndroidManifest.xml:64:9-36
is also present at [com.whatever:library:0.5.0] AndroidManifest.xml:7:18-44 value=(true).
Suggestion: add 'tools:replace="android:supportsRtl"' to <application> element at tempFile2ProcessTestManifest107.xml:17:5-19:19 to override.
Note again that this error only occurs when processing the unit tests, which is the first bit I don’t understand. I can fix the error by adding a file app/src/test/AndroidManifest.xml that contains the required tools:replace bit. Now the build runs better – but I get the warning:
application@android:supportsRtl was tagged at AndroidManifest.xml:4 to replace other declarations but no other declaration present
I can toggle between the error and the warning. While the latter is better, I would prefer complete silence in that matter.
[EDIT] Question was closed with a reference to Is `android:supportsRtl="true"` in the Library Manifest essential? It is causing error sometimes which contains no answer at all to any of my raised issues. The ‘solution’ proposed there was even already mentioned here.