Android配置文件gradle里的buildConfigField和manifestPlaceholders的理解
gradle文件的配置：defaultConfig{//定义一个String类型的变量，变量名为APP_ID_2，变量值取至于APP_ID_2_VALUEbuildConfigField"String","APP_ID_2",""${APP_ID_2_VALUE}""manifestPlaceholders=[APP_...
