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• 原本build.gradle配置

android {
    compileSdkVersion 26
 
    defaultConfig {
        applicationId "com.zlc.tecsun.fastec"
        minSdkVersion 19
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

}

• 解决方法

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