Frank's Blog

package com.pocketdigi;
 
import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.SeekBar.OnSeekBarChangeListener;
 
public class main extends Activity {
    /** Called when the activity is first created. */
    SeekBar sb;
    TextView tv;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        tv=(TextView)findViewById(R.id.tv);
        sb=(SeekBar)findViewById(R.id.seek);
        sb.setProgress(90);
        sb.setOnSeekBarChangeListener(sbLis);
    }
    private OnSeekBarChangeListener sbLis=new OnSeekBarChangeListener(){
 
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress,
                boolean fromUser) {
            //進度改變時觸發
            tv.setText(String.valueOf(sb.getProgress()));
 
        }
 
        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            // 開始拖動時觸發，與onProgressChanged區別在於onStartTrackingTouch在停止拖動前只觸發一次
            //而onProgressChanged只要在拖動，就會重複觸發
        }
 
        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            //結束拖動時觸發
 
        }
 
    };
}