安卓开发javalang

安卓开发java.lang.Exception:unauthorized!说清楚问题报错

app上传头像时，停了大概3秒就报这个错，![image.png](https://ucc.alicdn.com/pic/developer-ecology/847af122ba264d7d94d30612572818e1.png)

安卓开发过程中空指针的问题Java.lang.NullPointerException

最近做一个新闻客户端的应用，经常出现空指针的问题，我想一方面可能是自己水平有限，二是开发过程中有一些遗漏的地方。一般情况下新手出现空指针的概率较高。下面来总结一下经常出现的问题。1.所谓的指针，就是java中的对象的引用。比如...

java更多"lang"相关

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