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Attempt to invoke virtual method on a null object reference 完美解决_attempt to invoke virtual method 'java.lang.object_冷冷清清里风风火火是我的博客-CSDN博客

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  • 链接标题:Attempt to invoke virtual method on a null object reference 完美解决_attempt to invoke virtual method 'java.lang.object_冷冷清清里风风火火是我的博客-CSDN博客
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文章浏览阅读2.1w次,点赞4次,收藏20次。报错信息如下例:Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null objectAttempt to invoke virtual method 'java.lang.Object android.content.Context.getSystemService(java.lang.String)' on a null object referencejava.lang_attempt to invoke virtual method 'java.lang.object android.content.context.g