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一. Flutter集成uni小程序sdk

1. 手机连接电脑测试打开uni小程序没问题，打包成apk后debug编译下的apk也没问题，但就是release编译的apk包打不开小程序。
报错情景：点击后页面会闪现一下黑色的背景，然后又跳转回了点击之前的页面。
原因：开启了混淆（minifyEnabled true）但又没有把混淆规则文件放入到指定的android目录中。
解决：
打开android/app/build.gradle文件
minifyEnabled 设置成false，或者把uni小程序sdk中的proguard.cfg文件放入到指定目录中。

buildTypes {release {// 注意点：minifyEnabled 混淆和shrinkResources移除无用资源需同时为true或false，否则可能导致编译失败！minifyEnabled false  //是否进行混淆shrinkResources false  //删除无用资源//指定混淆规则文件proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro', 'proguard.cfg'// TODO: Add your own signing config for the release build.// Signing with the debug keys for now, so `flutter run --release` works.signingConfig signingConfigs.debug}}

2. minifyEnabled 混淆和shrinkResources移除无用资源值不相同时有可能会导致编译报错。

landeMacBook-Pro:life_app lan$ flutter build apkFAILURE: Build failed with an exception.* Where:
Build file '/Users/lan/Desktop/flutter-demo/life_app/android/build.gradle' line: 25* What went wrong:
A problem occurred evaluating root project 'android'.
> A problem occurred configuring project ':app'.> com.android.builder.errors.EvalIssueException: Removing unused resources requires unused code shrinking to be turned on. See http://d.android.com/r/tools/shrink-resources.html for more information.* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.* Get more help at https://help.gradle.org