升级gradle

nim_uikit/build.gradle

@@ -1,4 +1,6 @@
 apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-android-extensions'
 
 android {
     compileSdkVersion 29
@@ -67,5 +69,10 @@ dependencies {
     annotationProcessor "com.github.bumptech.glide:compiler:${glideVersion}"
 
     implementation project(':library')
+    implementation "androidx.core:core-ktx:+"
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 
 }
+repositories {
+    mavenCentral()
+}