default locale 设置地区

xxx@ubuntu-server:~$ grep -rsn "PRODUCT_DEFAULT_LOCALE" ./android/build
./android/build/core/Makefile:231: PRODUCT_DEFAULT_LOCALE="$(call get-default-product-locale,$(PRODUCT_LOCALES))" \
./android/build/tools/buildinfo.sh:54:if [ -n "$PRODUCT_DEFAULT_LOCALE" ] ; then
./android/build/tools/buildinfo.sh:55: echo "ro.product.locale=$PRODUCT_DEFAULT_LOCALE"

然后通过build/tool/buildinfo.sh文件将如下段写到文件build.prop，如下：

./android/frameworks/base/core/jni/AndroidRuntime.cpp:431:    // If persist.sys.locale and ro.product.locale are missing,
./android/frameworks/base/core/jni/AndroidRuntime.cpp:433:    const std::string productLanguage = getProperty("ro.product.locale.language", "en");
./android/frameworks/base/core/jni/AndroidRuntime.cpp:434:    const std::string productRegion = getProperty("ro.product.locale.region", "US");

./android/frameworks/base/core/jni/AndroidRuntime.cpp:853: const std::string locale = readLocale();

AndroidRuntime.cpp

createJavaThread() --> javaCreateThreadEtc() -- > start() --> startVm() --> readLocale()

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