java–Google material design library error程序类型已存在：android.support.v4.app.INotificationSideChannel

概述每当我尝试构建我的项目时,我都会添加实现’com.google.android.material：material：1.0.0-alpha1′,AndroidStudio说：Programtypealreadypresent:android.support.v4.app.INotificationSideChannel$Stub$ProxyMessage{kind=ERROR,text=Programtypealreadypresent:and

每当我尝试构建我的项目时,我都会添加实现’com.Google.@L_502_0@.material：material：1.0.0-Alpha1′,Android Studio说：

Program type already present: androID.support.v4.app.INotificationSIDeChannel$Stub$Proxy
Message{kind=ERROR, text=Program type already present: androID.support.v4.app.INotificationSIDeChannel$Stub$Proxy, sources=[UnkNown source file], tool name=Optional.of(D8)}

这是我的gradle脚本：

    apply plugin: 'com.androID.application'androID {    compileSdkVersion 'androID-P'    defaultConfig {        applicationID "it.smart.bab3"        minSdkVersion 21        targetSdkVersion 'p'        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-Alpha1'    implementation 'com.Google.androID.material:material:1.0.0-Alpha1'    implementation 'com.androID.support.constraint:constraint-layout:1.1.0'    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.androID.support:design:28.0.0-Alpha1'    implementation 'com.androID.support:support-v4:28.0.0-Alpha1'}

我是新的ith这种类型的错误,我没有找到这个错误的anithing.谢谢

解决方法:

我也一直在努力解决这个问题.最后,我成功地编译并运行了项目.

首先,摆脱这个：

implementation 'com.androID.support:appcompat-v7:28.0.0-Alpha1'implementation 'com.androID.support:design:28.0.0-Alpha1'implementation 'com.androID.support:support-v4:28.0.0-Alpha1'

在gradle.propertIEs文件中添加以下内容：

androID.useandroidX = trueandroID.enableJetifIEr = false

最后,同步项目然后编译.

如果它不起作用,请清理项目,然后重建.

PS：我无法让targetSdkVersion’p’工作.我的build.gradle文件最终如下：

apply plugin: 'com.androID.application'androID {    compileSdkVersion 'androID-P'    defaultConfig {        applicationID "com.github.alvarosct02.demo"        minSdkVersion 19        targetSdkVersion 27        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.Google.androID.material:material:1.0.0-Alpha1'    implementation 'com.androID.support.constraint:constraint-layout:1.1.0'    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'}

希望它也适合你.

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