nullpointerexception Android 的相关内容

文章 2023-06-28 来自：开发者社区

NullPointerException:method 'android.content.BroadcastReceiver.onReceive' on a null object reference

  最近在使用广播的时候遇到了这个问题，项目里面使用了极光推送，然后项目里有几个地方都需要写广播接收者去接收，所以我只在一个地方写了，然后其他的地方就是copy过去的，然后就报了这个错误，总的来说，这个错误是自己不细心造成，但是，找问题还是花了我一点时间的，所以也再次做一个记录。错误日志如下：NullPointerException:method 'android.content.Br....

文章 2017-12-14 来自：开发者社区

Cause for NullPointerException android.support.v7.widget.RecyclerView.onMeasure

because you have not set LinearLayoutManager to RecyclerView. for example: mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView); LinearLayoutManager layoutManager = new LinearLayout...

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更新时间 2024-04-29 19:14:32

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