'okhttp3.Call okhttp3.OkHttpClient.newCall(okhttp3.Request)' on a null object reference

FATAL EXCEPTION: Thread-2
03-08 21:19:51.370 9495 9527 E     AndroidRuntime                               Process: cf.blackchat.main, PID: 9495
03-08 21:19:51.370 9495 9527 E     AndroidRuntime                               java.lang.NullPointerException: Attempt to invoke virtual method 'okhttp3.Call okhttp3.OkHttpClient.newCall(okhttp3.Request)' on a null object reference
03-08 21:19:51.370 9495 9527 E     AndroidRuntime                               at cf.blackchat.main.about.mRun(about.java:68)
03-08 21:19:51.370 9495 9527 E     AndroidRuntime                               at cf.blackchat.main.about$100000000.run(about.java:31)
03-08 21:19:51.370 9495 9527 E     AndroidRuntime                               at java.lang.Thread.run(Thread.java:764)
03-08 21:37:45.221 13557 13711 E   AndroidRuntime                               FATAL EXCEPTION: Thread-2
03-08 21:37:45.221 13557 13711 E   AndroidRuntime                               Process: cf.blackchat.main, PID: 13557
03-08 21:37:45.221 13557 13711 E   AndroidRuntime                               java.lang.NullPointerException: Attempt to invoke virtual method 'okhttp3.Call okhttp3.OkHttpClient.newCall(okhttp3.Request)' on a null object reference
03-08 21:37:45.221 13557 13711 E   AndroidRuntime                               at cf.blackchat.main.about.getAnnouncement(about.java:59)
03-08 21:37:45.221 13557 13711 E   AndroidRuntime                               at cf.blackchat.main.about$100000000.run(about.java:32)
03-08 21:37:45.221 13557 13711 E   AndroidRuntime                               at java.lang.Thread.run(Thread.java:764)

困扰了我半天，总是弹出这个错误，然后闪退。

从这里得到了解决：https://coding.m.imooc.com/questiondetail.html?qid=8232

造成错误的原因：

OkHttpClient client;    //这玩意儿我忘记实例化就直接http操作了。

解决方案：

实例化一下就好了…

OkHttpClient client;

client=new OkHttpClient();

 

记录一下，总有人会犯同样的错误的