build(android): 压缩生产包体积至 13MB 并统一双渠道产物
生产包九成体积是两套 ABI 的引擎与快照。release 固定 split-debug-info 与 dart-obfuscation,快照从 8MB 降到 1.1MB/ABI;原生库改为压缩存储;开启 R8 裁剪并补保号规则;只打包实际引用的登录背景,移除零引用的图标字体。
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@@ -35,6 +35,13 @@ android {
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ndk {
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abiFilters += listOf("arm64-v8a", "armeabi-v7a")
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}
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// R8 裁剪未使用的 Java/Kotlin 代码与资源,减小 dex 与 res。
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isMinifyEnabled = true
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isShrinkResources = true
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proguardFiles(
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getDefaultProguardFile("proguard-android-optimize.txt"),
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"proguard-rules.pro",
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)
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// TODO: Add your own signing config for the release build.
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// Signing with the debug keys for now, so `flutter run --release` works.
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signingConfig = signingConfigs.getByName("debug")
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@@ -52,6 +59,9 @@ kotlin {
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androidComponents {
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onVariants(selector().withBuildType("release")) { variant ->
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variant.packaging.jniLibs.excludes.add("lib/x86_64/**")
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// 原生库随 APK 压缩存储:下载体积明显小于解压后的体积,代价是安装时解压。
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// 本包 90% 体积是 so,这一项对国内商店的 APK 分发影响最大。
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variant.packaging.jniLibs.useLegacyPackaging = true
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}
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}
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