Library compile issue (Android)

[ghnsharma]

error: InCallProximityManager.java:51: error: lambda expressions are not supported in -source 7
UiThreadUtil.runOnUiThread(() -> {
^
(use -source 8 or higher to enable lambda expressions)

FAILURE: Build failed with an exception.

I am getting this when trying to build the app on my android device. Any solutions?

[dinhduongson]

Me too

[fukemy]

use JAVA > 1.8

[viniciusmolina12]

Did you fix it?

[LongThV]

use JAVA > 1.8

I updated to java 11 but it still doesn't work

[fukemy]

use JAVA > 1.8

I updated to java 11 but it still doesn't work

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

add it into build.gradle app, inside android blockquote