RuntimeException: Unable to start activity(MainActivity cannot be cast to android.view.View$OnClickL

灰太狼 2022-07-15 08:18 122阅读 0赞

[RuntimeException: Unable to start activity(MainActivity cannot be cast to android.view.View$OnClickListener)][RuntimeException_ Unable to start activity_MainActivity cannot be cast to android.view.View_OnClickListener]

<table style="margin:0px; padding:0px; border:0px; font-size:13px; border-spacing:0px; border-collapse:collapse; color:rgb(36,39,41); font-family:Arial,&quot;Helvetica Neue&quot;,Helvetica,sans-serif"> 
 <tbody style="margin:0px; padding:0px; border:0px"> 
  <tr style="margin:0px; padding:0px; border:0px"> 
   <td style="margin:0px; padding:0px 15px 0px 0px; border:0px; font-size:13px; vertical-align:top"> 
    <div style="margin:0px; padding:0px; border:0px; text-align:center; min-width:46px"> 
     <span style="margin:8px 0px; padding:0px; border:0px; font-size:20px; display:block; color:rgb(106,115,124)">1</span> 
     <a title="This answer is not useful" style="margin:0px auto 10px; padding:0px; border:0px; font-size:1px; color:rgb(0,119,204); overflow:hidden; display:block; text-indent:-9999em; width:40px; height:30px" rel="nofollow">down vote</a> 
    </div> </td> 
   <td style="margin:0px; padding:0px; border:0px; font-size:13px; vertical-align:top"> 
    <div style="margin:0px 0px 5px; padding:0px; border:0px; font-size:15px; width:660px; word-wrap:break-word; line-height:1.3"> 
     <p style="margin-top:0px; margin-bottom:1em; padding-top:0px; padding-bottom:0px; border:0px; clear:both"> In MainActivity, you should implement&nbsp;<span style="margin:0px; padding:0px; border:0px">View.OnClickListener</span>. in this case, you don't need your own interface OnClickListener.java, just use View.OnClickListener</p> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

>   
> public class MainActivity extends Activity implements onClickListener

> public class MainActivity extends Activity implements View.OnClickListener

<table style="margin:0px; padding:0px; border:0px; font-size:13px; border-spacing:0px; border-collapse:collapse; color:rgb(36,39,41); font-family:Arial,&quot;Helvetica Neue&quot;,Helvetica,sans-serif"> 
 <tbody style="margin:0px; padding:0px; border:0px"> 
  <tr style="margin:0px; padding:0px; border:0px"> 
   <td style="margin:0px; padding:0px 15px 0px 0px; border:0px; font-size:13px; vertical-align:top"> 
    <div style="margin:0px; padding:0px; border:0px; text-align:center; min-width:46px"> 
     <span style="margin:8px 0px; padding:0px; border:0px; font-size:20px; display:block; color:rgb(106,115,124)">1</span> 
     <a title="This answer is not useful" style="margin:0px auto 10px; padding:0px; border:0px; font-size:1px; color:rgb(0,119,204); overflow:hidden; display:block; text-indent:-9999em; width:40px; height:30px" rel="nofollow">down vote</a> 
    </div> </td> 
   <td style="margin:0px; padding:0px; border:0px; font-size:13px; vertical-align:top"> 
    <div style="margin:0px 0px 5px; padding:0px; border:0px; font-size:15px; width:660px; word-wrap:break-word; line-height:1.3"> 
     <p style="margin-top:0px; margin-bottom:1em; padding-top:0px; padding-bottom:0px; border:0px; clear:both"> In MainActivity, you should implement&nbsp;<em style="margin:0px; padding:0px; border:0px">View.OnClickListener</em>. in this case, you don't need your own interface OnClickListener.java, just use View.OnClickListener</p> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

[RuntimeException_ Unable to start activity_MainActivity cannot be cast to android.view.View_OnClickListener]: http://stackoverflow.com/questions/18555284/runtimeexception-unable-to-start-activitymainactivity-cannot-be-cast-to-androi

RuntimeException: Unable to start activity(MainActivity cannot be cast to android.view.View$OnClickL

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