Android错误:Cannot cast from View to Spinner
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今天在实现Spinner控件的时候,出现错误:
Cannot cast from View to Spinner。如图:
private Spinner spinner01;
spinner01=(Spinner)findViewById(R.id.spinner01);
网上搜的原因是导入包的问题,经过检查代码发现的确是包倒错了,如图:
原因是在我自己工程的包nyist.daylight中的java文件类名也为Spinner,而应该导入的正确的应该是android.widget包。
解决办法是选择Spinner - android.widget,
private android.widget.Spinner spinner01;
spinner01=(android.widget.Spinner)findViewById(R.id.spinner01);
这样程序即可运行正常。
总结:在新建项目的时候最好不要将项目名和文件名与android中的类名相同,或者在导包的时候一定要注意导入正确的包,这样即可避免这样的错误发生了。
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