Android中SeekBar拖动条控件使用方法详解

<SeekBar 
  android:id="@+id/SeekBar1"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:progress="30"
  />

package fry;

import com.example.SeekBarDemo1.R;

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

public class Activity01 extends Activity implements OnSeekBarChangeListener{
 private TextView textView1;
 private TextView textView2;
 private SeekBar seekBar1;
 private SeekBar seekBar2;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 // TODO Auto-generated method stub
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity01);
 textView1=(TextView) findViewById(R.id.TextView1_seekBar);
 textView2=(TextView) findViewById(R.id.TextView2_seekBar);
 seekBar1=(SeekBar) findViewById(R.id.SeekBar1);
 seekBar2=(SeekBar) findViewById(R.id.SeekBar2);
 seekBar1.setOnSeekBarChangeListener(this);
 seekBar2.setOnSeekBarChangeListener(this);
 }
 /*
 * onProgressChanged：进度条改变事件
 * onStartTrackingTouch：进度条开始拖动事件
 * onStopTrackingTouch：进度条停止拖动事件
 * (non-Javadoc)
 * @see android.widget.SeekBar.OnSeekBarChangeListener#onProgressChanged(android.widget.SeekBar, int, boolean)
 */
 @Override
 public void onProgressChanged(SeekBar seekBar, int progress,
  boolean fromUser) {
 // TODO Auto-generated method stub
 if(seekBar1.getId()==R.id.SeekBar1){
  Toast.makeText(this, "1111111", Toast.LENGTH_SHORT).show();
  textView1.setText("seekBar1当前位置："+progress);
 }else{
  textView2.setText("seekBar2当前位置："+progress);
 }
 }
 @Override
 public void onStartTrackingTouch(SeekBar seekBar) {
 // TODO Auto-generated method stub
 if(seekBar1.getId()==R.id.SeekBar1){
  textView1.setText("seekBar1开始拖动");
 }else{
  textView2.setText("seekBar2开始拖动：");
 }
 }
 @Override
 public void onStopTrackingTouch(SeekBar seekBar) {
 // TODO Auto-generated method stub
 if(seekBar1.getId()==R.id.SeekBar1){
  textView1.setText("seekBar1停止拖动");
 }else{
  textView2.setText("seekBar2停止拖动：");
 }
 }
}

<?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" >

 <TextView 
 android:id="@+id/TextView1_seekBar"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:text="TextView1"
 />
 <TextView 
 android:id="@+id/TextView2_seekBar"
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:text="TextView2"
 />
 
 <SeekBar 
  android:id="@+id/SeekBar1"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:progress="30"
  />
 
 <SeekBar 
  android:id="@+id/SeekBar2"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:progress="60"
  />

</LinearLayout>