03 SeekBar 音频播放拖拽进度条

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

<span style="font-size:18px;">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);
				}
			});

	}

}</span>

<span style="font-size:18px;"><span style="display: none; width: 0px; height: 0px;" id="transmark"></span><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <!-- 

    android:progress="100"  设当前进度
    android:max="100"        最大进度           >缺省为100
	android:secondaryProgress="40"   第二进度条位置
     -->
<SeekBar
    android:id="@+id/sb"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
	android:max="100"
	android:progress="10"
	android:secondaryProgress="40"
    />

</LinearLayout></span>