英文:
Design editor is Unavailable Until after successful project sync
问题
我是Android的新手，当我尝试在首个应用的设计编辑器中设计UI时，我遇到了一个错误：“在成功项目同步之后才可以使用设计编辑器”，然后我意识到同步面板中也有问题，而这一切都与`build.gradle`中的依赖项有关。为了解决这个问题，我应该如何更改依赖项？以下是`build.gradle`中的依赖项：
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
}
以下是同步错误：
错误：未能解析：junit
错误：未能解析：espresso-idling-source
错误：未能解析：runner
错误：未能解析：core
错误：未能解析：espresso-core
错误：未能解析：monitor
英文:
I am new to Android and when I tried to design UI in design editor for the first app I faced an error "Design editor is Unavailable Until after successful project sync", then I realized that I had also issues in sync panel and that was all about dependencies in build.gradle. How should I change dependencies to solve this issue? Below are dependencies in build.gradle:
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
}
And below are sync errors:
ERROR:Failed to resolve:junit
ERROR:Failed to resolve:epresso-idling-source
ERROR:Failed to resolve:runner
ERROR:Failed to resolve:core
ERROR:Failed to resolve:epresso-core
ERROR:Failed to resolve:monitor
答案1
得分: 1
我刚刚从依赖项中删除了下面的这些行，并且它运行正常，
testImplementation 'junit:junit:4.12' androidTestImplementation 'androidx.test.ext:junit:1.1.1' androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
但我不知道这是否会在将来引发问题。
英文:
I just removed these below lines from dependencies and it worked,
> testImplementation 'junit:junit:4.12'
> androidTestImplementation 'androidx.test.ext:junit:1.1.1'
> androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
but i dont know that will cause an issue in future or not..
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