[Fix] Enable Java 8 and fix building with ButterKnife.

zhanghai · zhanghai · commit 50ec0bff414c · 2019-12-06T00:34:01.000-08:00
diff --git a/library/build.gradle b/library/build.gradle
@@ -18,6 +18,11 @@ android {
         consumerProguardFiles 'proguard-rules.pro'
     }
 
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
     buildTypes {
         release {
             minifyEnabled false
diff --git a/sample/build.gradle b/sample/build.gradle
@@ -18,6 +18,11 @@ android {
         versionName project.VERSION_NAME
     }
 
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
     signingConfigs {
         release {
             storeFile file('../../github.jks')
