Flutter簡介
Flutter是Google推出的基於Dart語言開發的跨平臺開源UI框架,旨在統一紛紛擾擾的跨平臺開發框架,在UI層面上多端共用一套Dart代碼來實現多平臺適配開發。目前應用比較廣泛的還是移動端iOS和安卓,雖然傳言Fuchsia會是親兒子項目,那也不是當下考慮的。
下面重點給大家介紹下flutter的環境安裝配置問題及解決方法。
(1)安裝android SDK時,會出現Android license 的問題,將JAVA JDK降級到SE8就可以了,很多版本沒對應上,JAVA8是比較穩定的,包括後面的gradle也需要基於JAVA8
問題描述:[!] Android toolchain - develop for Android devices (Android SDK 27.0.3) ✗ Android license status unknown.
解決:安裝JAVA8後,運行 flutter doctor --android-licenses
(2) 卡在Running ‘gradle assembleDebug運行階段,引用國內阿里雲的鏡像解決。
問題描述:Running Gradle task 'assembleDebug'...
解決:
修改項目中`android/build.gradle`文件
buildscript { repositories { //修改的地方 //google() //jcenter() maven { url 'https://maven.aliyun.com/repository/google' } maven { url 'https://maven.aliyun.com/repository/jcenter' } maven { url 'http://maven.aliyun.com/nexus/content/groups/public' } } dependencies { classpath 'com.android.tools.build:gradle:3.2.1' } } allprojects { repositories { //修改的地方 //google() //jcenter() maven { url 'https://maven.aliyun.com/repository/google' } maven { url 'https://maven.aliyun.com/repository/jcenter' } maven { url 'http://maven.aliyun.com/nexus/content/groups/public' } } } rootProject.buildDir = '../build' subprojects { project.buildDir = "${rootProject.buildDir}/${project.name}" } subprojects { project.evaluationDependsOn(':app') } task clean(type: Delete) { delete rootProject.buildDir }
修改Flutter的配置文件, 該文件在`Flutter安裝目錄/packages/flutter_tools/gradle/flutter.gradle`
buildscript { repositories { //修改的地方 //google() //jcenter() maven { url 'https://maven.aliyun.com/repository/google' } maven { url 'https://maven.aliyun.com/repository/jcenter' } maven { url 'http://maven.aliyun.com/nexus/content/groups/public' } } dependencies { classpath 'com.android.tools.build:gradle:3.2.1' } }
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