海创软件组–2020-06-13–关于AS版本适配问题Fristnowait的博客-

ERROR: This version of Android Studio cannot open this project, please retry with Android Studio 3.6 or newer.

有时AS重新下载后发现原来的项目都用不了了，实在令人抓狂。
主要问题是你的build.gradle版本太高，得降级。

在gradle包下找到build.gradle，比如我这里是出现问题的

buildscript {          repositories { google() jcenter() }     dependencies {         classpath 'com.android.tools.build:gradle:3.6.3' // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } }  allprojects {     repositories { google() jcenter() } }  task clean(type: Delete) {     delete rootProject.buildDir } 

具体改什么可以参照你重新创建能用的项目，同样打开gradle包下build.gradle

buildscript {          repositories { google() jcenter() }     dependencies {         classpath 'com.android.tools.build:gradle:3.5.2' // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } }  allprojects {     repositories { google() jcenter() } }  task clean(type: Delete) {     delete rootProject.buildDir } 

只需把3.6.3改为能匹配的3.5.2

到这里可能也是不行的，因为你app包下的build.gradle也出了问题

apply plugin: 'com.android.application'  android {     compileSdkVersion 28     buildToolsVersion "29.0.3"      defaultConfig {         applicationId "com.example.test"         minSdkVersion 15         targetSdkVersion 28         versionCode 1         versionName "1.0"          testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" }      buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } } }  dependencies {     implementation fileTree(dir: 'libs', include: ['*.jar'])      implementation 'com.android.support:appcompat-v7:28.0.0'     implementation 'com.android.support:recyclerview-v7:28.0.0'      implementation 'androidx.appcompat:appcompat:1.1.0'     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' } 

你的compileSdkVersion 28 、 targetSdkVersion 28与buildToolsVersion “29.0.3”版本也不匹配
重新更改为

apply plugin: 'com.android.application'  android {     compileSdkVersion 29     buildToolsVersion "29.0.3"      defaultConfig {         applicationId "com.example.test"         minSdkVersion 15         targetSdkVersion 29         versionCode 1         versionName "1.0"          testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" }      buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } } }  dependencies {     implementation fileTree(dir: 'libs', include: ['*.jar'])      implementation 'com.android.support:appcompat-v7:28.0.0'     implementation 'com.android.support:recyclerview-v7:28.0.0'      implementation 'androidx.appcompat:appcompat:1.1.0'     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' } 

这样问题差不多就解决了