android: Use Java 8 features

diff --git a/src/frontends/android/app/build.gradle b/src/frontends/android/app/build.gradle
index 737787b5e919ab2882b7a88efa2dd3114fad4501..fde53eabf7c5b165ee19de3aa48ece4aedbc8de1 100644 (file)
--- a/src/frontends/android/app/build.gradle
+++ b/src/frontends/android/app/build.gradle
@@ -40,6 +40,10 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
         }
     }
+    compileOptions {
+        targetCompatibility 1.8
+        sourceCompatibility 1.8
+    }
 }
 
 dependencies {