SeekBar拖动条控件

SeekBar拖动条控件

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.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