修改 构建参数

app/build.gradle

@@ -1,12 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 25
-    buildToolsVersion '26.0.2'
+    compileSdkVersion 28
     defaultConfig {
         applicationId "com.zqx.kedaxunfei"
         minSdkVersion 19
-        targetSdkVersion 25
+        targetSdkVersion 28
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0'
+        classpath 'com.android.tools.build:gradle:3.6.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files