Question

我在项目中遇到此错误这是我的gradle版本

var delegate: ViewControllerCResult?

func set(data: String) {
    print(data)
}

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

@IBAction func popControllerPressed(_ sender: Any) {
    for controller in self.navigationController!.viewControllers as Array {
        if controller.isKind(of: ViewController.self) {
            delegate?.set(data: "data from C")
            self.navigationController!.popToViewController(controller, animated: true)
            break
        }
    }

}

}

Answer 1

确保已将Maven导入您的gradle中，检查文档https://developers.google.com/android/guides/setup

Answer 2

请尝试使用相同的版本控制可能会因为版本不等而出错，就像下面这样，

implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.1'
implementation 'com.android.support:design:27.1.1'
implementation 'com.android.support:support-v4:27.1.1'
implementation 'com.google.firebase:firebase-messaging:16.0.0'
implementation 'com.google.firebase:firebase-auth:16.0.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.google.firebase:firebase-database:16.0.0'

implementation 'com.google.firebase:firebase-core:16.0.0'

Answer 3

尝试使用相同版本的Api或使用外部.jar文件

Answer 4

确保编译和目标sdk编号与应用程序的兼容编号相同。像这样

compileSdkVersion 26
targetSdkVersion 26
implementation 'com.android.support:appcompat-v7:26.1.0'

Answer 5

实现fileTree（dir：'libs'，包括：['* .jar']）

implementation 'com.android.support:appcompat-v7:27.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.google.firebase:firebase-core:16.0.1'

implementation 'com.google.firebase:firebase-auth:11.6.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

错误：找不到com.google.android.gms.internal.zzeuq的zzeuq类文件

5 个答案: