如何在android中控制我的选框的速度？

Question

我的java代码就是这样..

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class TextviewActivity extends Activity {
    /** Called when the activity is first created. */
    private TextView myTextView;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        myTextView= (TextView) this.findViewById(R.id.my_text_view); 
        myTextView.setSelected(true);
    }
}

我的xml代码是这个..

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class TextviewActivity extends Activity {
    /** Called when the activity is first created. */
    private TextView myTextView;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        myTextView= (TextView) this.findViewById(R.id.my_text_view); 
        myTextView.setSelected(true);
    }
}

我搜索了很多代码，但它没有运行..我很欣赏evey评论.. :)