在Gradle中加载素材-无法下载"android-P" [英] Load Material in Gradle - Failed downloading 'android-P'

问题描述

我真的是Android Studio的新手.

i am really new to Android Studio.

我想将 Material 依赖项添加到我的项目中，但是在sync我的gradle文件中却收到一条错误消息.

I would like to add the Material dependency to my project but while sync my gradle file I get an error message.

该线程(链接)告诉我使用但这会导致android studio告诉我下载android-P，当我单击下载时，它无法执行(... android-P无法下载..).

This thread (link) told me to use compileSdkVersion 'android-P' but this results in android studio telling me to download android-Pwhich it fails to do, when i click on download (... android-P not avaliable for download..).

因此，我按照材料主页开始使用.

So I went back to trying it as described on the material homepage get started.

下面您可以找到我的相应代码和错误消息:

Below you can my find my according code and error message:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.chris.doghelper"
        minSdkVersion 22
        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'
        }
    }
}
allprojects {
    repositories {
        google()
        jcenter()
        mavenCentral()
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support:support-v4:28.0.0'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'com.google.android.material:material:1.0.0'
    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'
}

和错误消息:

Manifest merger failed : Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91
    is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 value=(androidx.core.app.CoreComponentFactory).
    Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:5:5-24:19 to override.

您能解决我的问题吗?

Do you have a fix for my problem?

推荐答案

这是因为您正在将新的材料库与旧版支持库一起使用.您必须将android.support迁移到androidx才能使用com.google.android.material.

This is because you are using the new Material library with the legacy Support Library. You have to migrate android.support to androidx in order to use com.google.android.material.

如果您还不想切换到新的androidx和com.google.android.material软件包，则可以通过com.android.support:design:28.0.0依赖项使用材料组件.

If you don't want to switch over to the new androidx and com.google.android.material packages yet, you can use Material Components via the com.android.support:design:28.0.0 dependency.

关注 Link1 和 Link2 .

要切换androidX，请遵循以下 Link3 .

To switch androidX follow this Link3.

我走得更深，为你找到了它.

I went to more deeper and I got it for you.

肯定会为您提供帮助.

祝您编程愉快！

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