【Android】【配置文件】gradle和manifest的使用（二）：代码中使用gradle变量

在buildType元素下定义变量

    buildTypes {
        release {
            buildConfigField "String", "CLIENT_VERSION", '"白云机场"'
            buildConfigField "int", "DB_VERSION", "101"
            resValue "string", "app_version", "release"
            resValue "dimen", "font_size", "20dp"
        }
        debug {
            buildConfigField "String", "CLIENT_VERSION", '"白云机场"'
            buildConfigField "int", "DB_VERSION", "101"
            resValue "string", "app_version", "debug"
            resValue "dimen", "font_size", "20dp"
        }
    }

在代码中获取BuildConfig变量

			String clientVersion = BuildConfig.CLIENT_VERSION;
            int dbVersion = BuildConfig.DB_VERSION;
            TipBox.tip(clientVersion, dbVersion);

在xml中引用ResValue变量

   	   <Button
        android:id="@+id/v"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:text="@string/app_version"
        android:textSize="@dimen/font_size" />