AndroidStudio错误:无法解析符号'查看'

我正试图从谷歌跟随这个教程用Android Studio创建你自己的Android应用程序.但是,当我按照此页面上的第4步操作时:http://developer.android.com/training/basics/firstapp/starting-activity.html Android Studio最终会出现此错误:

Cannot resolve symbol 'View'

这就是我的代码目前的样子:

public class MainActivity extends ActionBarActivity {
    /** Called when the user clicks the Send button */
    public void sendMessage(View view) { <--- (This line ends up with the error)
        // Do something in response to button
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

这段代码怎么了？我没有java经验,在查看其他问题后,我仍然无法找到合适的解决方案.

谢谢你的帮助!

我想你忘了为View包含import语句.在代码中添加以下导入

import android.view.View;