ionic2打包生成APK报错 Error: Could not find gradle wrapper within Android SDK. Might need to update your Android SDK. Looked here: D:AndroidSDK ools emplatesgradlewrapper

如果还是不OK，删除Platform和Plugins两个目录，重新添加下平台试试。

参考链接：https://stackoverflow.com/questions/31310182/error-could-not-find-gradle-wrapper-within-android-sdk-might-need-to-update-yo

http://blog.csdn.net/qq_37988919/article/details/70226741

https://stackoverflow.com/questions/42668185/could-not-find-gradle-wrapper-within-android-sdk-might-need-to-update-your-andr

http://blog.csdn.net/gufeilong/article/details/68488828

http://www.cnblogs.com/weiweictgu/p/6752599.html