android studio显示红色的j,Git - 在(Android Studio )中，java文件有一个带红色J的圆圈_java_开发99编程知识库...

我安装了JDK 13

下面是build.gradle文件的代码(忽略todo)apply plugin: 'com.android.application'

android {

compileSdkVersion 25

defaultConfig {

applicationId"com.android.example.favoritetoys"

minSdkVersion 10

targetSdkVersion 25

versionCode 1

versionName"1.0"

}

buildTypes {

release {

minifyEnabled false

}

}

}

dependencies {

implementation fileTree(dir: 'libs', include: ['*.jar'])

implementation 'com.android.support:appcompat-v7:25.1.0'

// TODO (7) Remove the ConstraintLayout dependency as we aren't using it for

these simple projects

implementation 'com.android.support.constraint:constraint-layout:1.0.0-

beta4'

}