android {
...
defaultConfig {...}
buildTypes {...}
productFlavors {
// When building a variant that uses this flavor, the following configurations// override those in the defaultConfig block.
dev {
// To avoid using legacy multidex, set minSdkVersion to 21 or higher.
minSdkVersion 21
versionNameSuffix "-dev"
applicationIdSuffix '.dev'
}
prod {
// If you've configured the defaultConfig block for the release version of// your app, you can leave this block empty and Gradle uses configurations in// the defaultConfig block instead. You still need to create this flavor.// Otherwise, all variants use the "dev" flavor configurations.
}
}
}複製程式碼
android {
...
productFlavors {
dev {
...
// The following configuration limits the "dev" flavor to using// English stringresources and xxhdpi screen-density resources.
resConfigs "en", "xxhdpi"
}
...
}
}複製程式碼
上面的配置將會限制dev 變體只使用 english string 資源和 xxhdpi 螢幕密度資源。
int MILLIS_IN_MINUTE = 1000 * 60int minutesSinceEpoch = System.currentTimeMillis() / MILLIS_IN_MINUTE
android {
...
defaultConfig {
// Making either of these two values dynamic in the defaultConfig will// require a full APK build and reinstallation because the AndroidManifest.xml// must be updated (which is not supported by Instant Run).
versionCode 1
versionName "1.0"
...
}
// The defaultConfig values above are fixed, so your incremental builds don't// need to rebuild the manifest (and therefore the whole APK, slowing build times).// But for release builds, it's okay. So the following script iterates through// all the known variants, finds those that are "release" build types, and// changes those properties to something dynamic.
applicationVariants.all { variant ->
if (variant.buildType.name == "release") {
variant.mergedFlavor.versionCode = minutesSinceEpoch;
variant.mergedFlavor.versionName = minutesSinceEpoch + "-" + variant.flavorName;
}
}
}複製程式碼
為了讓Gradle能夠確切的知道該如何構建你的APP,在每次構建之前，構建系統配置工程的所有modules和其他依賴（即使你只想構建或者測試一個modules），這使得大型的多module 工程的構建速度變得很慢。告訴Gradle僅僅配置你想要構建的Modules，用如下步驟使 on demand 配置可用
(1) 在選單欄上選擇 File -> Settings（如果是Mac上 ，選擇 Android Studio ->Preferences）
android {
...
dexOptions {
preDexLibraries true
maxProcessCount 8// Instead of setting the heap size for the DEX process, increase Gradle's// heap size to enable dex-in-process. To learm more, read the next section.// javaMaxHeapSize "2048m"
}
}複製程式碼
WebP是一種圖片檔案格式，它提供了像JPEG一樣的有失真壓縮和像PNG一樣的透明支援，但是同時它的壓縮質量比JPEG或者PNG任何一個都更好，減小Image檔案的大小，而不用在構建時做壓縮，因此它能提高構建速度，尤其是你的APP使用了大量的圖片資源。但是有一點，在解壓WebP格式的圖片的時候，你的裝置的CPU使用將小幅度增加。 用Android Studio 可以很方便的轉WebP格式，詳情請看convert your images to WebP.
