若有 java.lang.RuntimeException和 java.lang.NullPointerException: Attempt to invoke virtual method 'void android.一起的异常报错，
很大几率是因为控件实列写错了，好好检查R.id.xx有没有写错，
多次的粗心大意犯的同样的错误，以此记录。
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Android开发中java.lang.RuntimeException: Unable to start activity ComponentInfo{xxx}: java.lang.NullPointerException 错误的集中原因及解决办法
Android开发中java.lang.RuntimeException: Unable to start activity ComponentInfo{xxx}: java.lang.NullPointerException 错误的集中原因及解决办法
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Android开发中java.lang.RuntimeException: Unable to start activity ComponentInfo{xxx}
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