[控件]SeekBar拖動條

import android.app.Activity;
import android.os.Bundle;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;

public class mainActivity extends Activity {
    SeekBar seekBar;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        seekBar = (SeekBar) findViewById(R.id.sb);
        seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                // 停止拖動
                System.out.println("onStopTrackingTouch");
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                // 開始拖動
                System.out.println("onStartTrackingTouch");
            }

            @Override
            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {
                // 正在拖動
                System.out.println("onProgressChanged  " + progress + "  "
                        + fromUser);
            }
        });
    }
}
           

可以在XML中使用android:max="100"設定最大值

android:progress="20"表示目前值