The method setButton(int, CharSequence, Message) in the type AlertDialog is not applicable for the a

用dialog做弹出框的时候，报错，如下图

感觉很奇怪，报的错误，我写在标题了，，解决方法，在OnClickListener前添加DialogInterface

例如取消，， alert.setButton(DialogInterface.BUTTON_NEGATIVE, "取消",new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog,int which) {
finish();
}
});

为什么这么改，

实际上就是一个错误，AlertDialog.setButton()里，第三个参数是一个OnClickListener，这个监听器类是DialogInterface里的，看异常说明，你那导入的类应该是View类里的OnClickListener。所以会出现类型异常。

 这是我百度的，别人的回答。

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