Question

同步Gradle文件后，我一直遇到这些问题。我的gradle文件看起来像这样。

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.calcounter.whattappclone"
        minSdkVersion 15
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    dependencies {
        implementation fileTree(dir: 'libs', include: ['*.jar'])
        implementation 'com.android.support:appcompat-v7:28.0.0-rc02'
        implementation 'com.android.support:design:28.0.0-rc02'
        implementation 'com.andriod.support:support-v4:28.0.0-rc01'
        implementation 'com.android.support.constraint:constraint-layout:1.1.2'
        implementation 'com.google.firebase:firebase-auth:11.8.0'
        implementation 'com.google.firebase:firebase-storage:11.8.0'
        implementation 'com.google.firebase:firebase-database:11.8.0'
        // FirebaseUI for Firebase Realtime Database
        implementation 'com.firebaseui:firebase-ui-database:3.2.2'
       implementation 'com.andriod.support:support-v4:27.0.0-rc01'
        implementation 'de.hdodenhof:circleimageview:2.2.0'
        implementation 'com.theartofdev.edmodo:android-image-cropper:2.7.+'
        implementation 'com.squareup.picasso:picasso:2.71828'
        testImplementation 'junit:junit:4.12'

        //implementation 'com.android.support:support-annotations:27.1.1'
        androidTestImplementation 'com.android.support.test:runner:1.0.2'
        androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    }

**这是我一直在使用的gradle.project文件，仍然发生错误，我尝试更改依赖项，但仍然发生相同的错误

buildscript {

    repositories {
        google()
        jcenter()
    }
    dependencies {

        classpath 'com.android.tools.build:gradle:3.2.1'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files

        classpath 'com.google.gms:google-services:3.2.0'


        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

有什么解决方案吗？请

Answer 1

使用相同的版本和最新的稳定版本：

implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'
implementation 'com.andriod.support:support-v4:28.0.0'

然后删除重复的（support-v4）一个。也要在根gradle中更新build.gradle：

classpath 'com.android.tools.build:gradle:3.2.1'

Answer 2

我有类似的问题。原来，我在设置中勾选了“离线工作”，这阻止了Android Studio上网寻求依赖。我没有对本地存储库的必需依赖项，因此“无法解决..”一直在发生。关闭它可以解决问题。当我想到这一点时，这是显而易见的，但它吸引了我。

无法解决：com.android.support:support-v4:28.0.0-rc01

2 个答案: