Question

刚刚下载 Android Studio 2.1.3 。每次都提供

error: cannot resolve symbol appcompatactivity,oncreate.Further it shows message "Error:A problem occurred configuring project ':app'.

无法下载junit.jar（junit：junit：4.12）无法获得资源＆＃39; https://jcenter.bintray.com/junit/junit/4.12/junit-4.12.jar＆＃39;。 java.lang.NullPointerException（无错误消息）＆＃34; 申请插件：＆＃39; com.android.application＆＃39;

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.2"

    defaultConfig {
        applicationId "com.example.prateek.myapplication"
        minSdkVersion 23
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:24.2.0'
}

Answer 1

尝试删除该行：

testCompile 'junit:junit:4.12'

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