[控件]SeekBar拖动条

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) {                // 停止拖动                System.out.println("onStopTrackingTouch");            }            @Override            public void onStartTrackingTouch(SeekBar seekBar) {                // 开始拖动                System.out.println("onStartTrackingTouch");            }            @Override            public void onProgressChanged(SeekBar seekBar, int progress,                    boolean fromUser) {                // 正在拖动                System.out.println("onProgressChanged  " + progress + "  "                        + fromUser);            }        });    }}

可以在XML中使用android:max="100"设置最大值
android:progress="20"表示当前值

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