xiaoxiaoazhang

when i update gradle-wrapper.properties: distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip to distributionUrl=https\://services.gradle.org/distributions/gradle-4.5-all.zip and update build.gradle 'com.android.tools.build:gradle:2.3.3' to 'com.android.tools.build:gradle:3.2.0-alpha08', it appear this problem, but when i change it back. the problem is disappear. so i think...