RN打包报错：

Task :react-native-picker:verifyReleaseResources FAILED
Execution failed for task ':react-native-picker:verifyReleaseResources'.

解决方法：
修改文件react-native-picker中的版本信息。
路径：node_modules/react-native-picker/android/build.gradle

android {// compileSdkVersion 27// buildToolsVersion "23.0.1"compileSdkVersion 31buildToolsVersion "31.0.0"defaultConfig {// minSdkVersion 16// targetSdkVersion 27minSdkVersion 21targetSdkVersion 31versionCode 1versionName "1.0"testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"}buildTypes {release {minifyEnabled falseproguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'}}
}