我导入了一个我工作了很多天的项目,但是我不得不升级Android Studio,然后,我收到了这个错误:
Error:(1, 1) A problem occurred evaluating project ':app'.
> java.lang.UnsupportedClassVersionError: com/android/build/gradle/AppPlugin :
Unsupported major.minor version 52.0
另外,当我检查我的课程时,我在每个R上都得到一条红线,并说无法解析符号R. 你知道怎么解决吗? 我的android Studio版本是:2.3.3
构建Gradle:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.3.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion '25.0.0'
defaultConfig {
applicationId "hadirfinal.amjad.hadirfinal"
minSdkVersion 14
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
android {
useLibrary 'org.apache.http.legacy'
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.tools.build:gradle:2.1.3'
}
答案 0 :(得分:0)
首先,检查您的Java版本。 Unsupported major.minor version 52.0
与Java 8相关。从文件中检查SDK Location
中的JDK - >项目结构 - > SDK位置:
然后使用build.gradle
升级 root build:gradle:2.3.3
:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.3.3'
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
然后在应用 compileSdkVersion
中使用相同版本更新buildToolsVersion
,targetSdkVersion
,build.gradle
和支持库。这里我们使用版本25.然后删除以下行compile 'com.android.tools.build:gradle:2.1.3'
,因为您不需要它。所以,它看起来像这样:
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion '25.0.3'
defaultConfig {
applicationId "hadirfinal.amjad.hadirfinal"
minSdkVersion 14
targetSdkVersion 25
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
android {
useLibrary 'org.apache.http.legacy'
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:25.3.1'
}