八,  SeekBar  音频播放拖拽进度条  

    >

       

        android:progress="40"   第一进度

        android:secondaryProgress="50"  第二进度

    >使用: setOnSeekBarChangeListener

package com.fmy.a;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.SeekBar;import android.widget.SeekBar.OnSeekBarChangeListener;import android.widget.Toast;public class MainActivity extends Activity {		@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.demo_textview);					SeekBar sb = (SeekBar) findViewById(R.id.sb);			//用户点击不会触发此回调接口			sb.setOnClickListener(new OnClickListener() {								@Override				public void onClick(View v) {					Toast.makeText(MainActivity.this, "嘿嘿", 0).show();				}			});			sb.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {								//停止拖动音频条				@Override				public void onStopTrackingTouch(SeekBar seekBar) {					// TODO Auto-generated method stub					System.out.println("停止拖动");				}				//开发拖动音频条				@Override				public void onStartTrackingTouch(SeekBar seekBar) {					// TODO Auto-generated method stub					System.out.println("开始拖动音频条");				}				//音频条改变  fromUser是否是用户改变的状态  progress 当前进度				@Override				public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {					// TODO Auto-generated method stub					System.out.println("音频条改变"+fromUser);				}			});				}					}