赞
踩
打包步骤:
storePassword=123456
keyPassword=123456
keyAlias=wanwan
storeFile=keystore/key.jks
def keystorePropertiesFile = rootProject.file("key.properties") def keystoreProperties = new Properties() keystoreProperties.load(new FileInputStream(keystorePropertiesFile)) signingConfigs { release { keyAlias keystoreProperties['keyAlias'] keyPassword keystoreProperties['keyPassword'] storeFile file(keystoreProperties['storeFile']) storePassword keystoreProperties['storePassword'] } } buildTypes { release { signingConfig signingConfigs.release minifyEnabled false shrinkResources false } debug { signingConfig signingConfigs.release minifyEnabled false shrinkResources false } }
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!
同时我们可以在defaultConfig中开启multiDex,以及自定义支持的cpu架构:
defaultConfig {
applicationId "com.byl.wanwan"
minSdkVersion 21
targetSdkVersion 27
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
flavorDimensions "22"
multiDexEnabled true
ndk {
abiFilters "armeabi", "armeabi-v7a"
}
}
**注意点:**此时若直接运行,会报错,找不到libflutter.so!这是因为在编译debug时,flutter默认会把所支持的cpu架构全部编译,而我们只定义了arm,所以在某些设备上就会运行失败!我们可以在build.gradle中可以看到有一句代码:
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
这个就是flutter在编译apk时的配置信息 :
// The platforms that can be passed to the `--Ptarget-platform` flag.
private static final String PLATFORM_ARM32 = "android-arm";
private static final String PLATFORM_ARM64 = "android-arm64";
private static final String PLATFORM_X86 = "android-x86";
private static final String PLATFORM_X86_64 = "android-x64";
// The ABI architectures.
private static final String ARCH_ARM32 = "armeabi-v7a";
private static final String ARCH_ARM64 = "arm64-v8a";
private static final String ARCH_X86 = "x86";
private static final String ARCH_X86_64 = "x86_64";
要解决这个问题,我们可以指定target-platform,在build.gradle中,apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"前,加上:
project.setProperty('target-platform', 'android-arm')
此时就可以运行成功了!
然后我们可以测试,用flutter build apk,生成的release包会发现比之前的debug小了很多!
将release包安装后 ,会发现运行速度比debug包快了几倍,然额,出现了点小问题,首页列表数据没有展示,这是什么鬼?debug是没有问题的,为什么release出了问题?
仔细查找log,发现了一处错误提示:
Instance of 'DiagnosticsProperty<void>'
在查询了该错误的原因后,大概是因为Expanded组件的错误使用导致,Expanded一般只在Colunm和Row以及Flex下使用,在其它组件下在打包时就可能出现问题,修改后,再次打包,显示正常!
Copyright © 2003-2013 www.wpsshop.cn 版权所有,并保留所有权利。