无法在 Android Studio 中解析 R
Cannot resolve R in Android Studio
我尝试清理、重建、同步 gradle 文件...
这是我的 gradle 文件
apply plugin: 'com.android.application'
android {
compileSdkVersion 21
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "com.example.user.myapplication"
minSdkVersion 14
targetSdkVersion 21
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
} }
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:26.0.0-alpha1' }
这也会报错
在你的依赖之上添加
configurations.all {
resolutionStrategy.force 'com.android.support:support-annotations:23.1.0'
}
并且您还需要添加这些依赖项。
androidTestCompile 'com.android.support:support-annotations:23.1.0'
androidTestCompile 'com.android.support.test:runner:0.4.1'
androidTestCompile 'com.android.support.test:rules:0.4.1'
androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.1'
androidTestCompile 'com.android.support.test.espresso:espresso-intents:2.2.1'
androidTestCompile 'com.android.support.test.espresso:espresso-web:2.2.1'
大功告成。
我尝试清理、重建、同步 gradle 文件... 这是我的 gradle 文件
apply plugin: 'com.android.application'
android { compileSdkVersion 21 buildToolsVersion "21.1.2"
defaultConfig { applicationId "com.example.user.myapplication" minSdkVersion 14 targetSdkVersion 21 versionCode 1 versionName "1.0" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } }
dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:appcompat-v7:26.0.0-alpha1' }
这也会报错
在你的依赖之上添加
configurations.all {
resolutionStrategy.force 'com.android.support:support-annotations:23.1.0'
}
并且您还需要添加这些依赖项。
androidTestCompile 'com.android.support:support-annotations:23.1.0'
androidTestCompile 'com.android.support.test:runner:0.4.1'
androidTestCompile 'com.android.support.test:rules:0.4.1'
androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.1'
androidTestCompile 'com.android.support.test.espresso:espresso-intents:2.2.1'
androidTestCompile 'com.android.support.test.espresso:espresso-web:2.2.1'
大功告成。