Android中SeekBar拖动条控件使用方法详解

SeekBar拖动条控件使用方法，具体内容如下

一、简介

1、

 二、SeekBar拖动条控件使用方法

1、创建SeekBar控件

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

2、添加setOnSeekBarChangeListener监听

seekBar2.setOnSeekBarChangeListener(this); 

三、代码实例

1、效果图：

2、代码

fry.Activity01

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：");
  }
 }
}

/SeekBarDemo1/res/layout/activity01.html" target="_blank">xml

<?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> 

四、获得

1、设置初始进度条

android:progress="30"

2、设置setOnSeekBarChangeListener监听

seekBar1.setOnSeekBarChangeListener(this);

3、onProgressChanged：进度条改变事件

4、onStartTrackingTouch：进度条开始拖动事件

5、onStopTrackingTouch：进度条停止拖动事件

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