SeekBar拖动条控件

Posted 2020-10-01 范仁义

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

 1 package fry;
 2 
 3 import com.example.SeekBarDemo1.R;
 4 
 5 import android.app.Activity;
 6 import android.os.Bundle;
 7 import android.widget.SeekBar;
 8 import android.widget.SeekBar.OnSeekBarChangeListener;
 9 import android.widget.TextView;
10 import android.widget.Toast;
11 
12 public class Activity01 extends Activity implements OnSeekBarChangeListener{
13     private TextView textView1;
14     private TextView textView2;
15     private SeekBar seekBar1;
16     private SeekBar seekBar2;
17     @Override
18     protected void onCreate(Bundle savedInstanceState) {
19         // TODO Auto-generated method stub
20         super.onCreate(savedInstanceState);
21         setContentView(R.layout.activity01);
22         textView1=(TextView) findViewById(R.id.TextView1_seekBar);
23         textView2=(TextView) findViewById(R.id.TextView2_seekBar);
24         seekBar1=(SeekBar) findViewById(R.id.SeekBar1);
25         seekBar2=(SeekBar) findViewById(R.id.SeekBar2);
26         seekBar1.setOnSeekBarChangeListener(this);
27         seekBar2.setOnSeekBarChangeListener(this);
28     }
29     /*
30      * onProgressChanged：进度条改变事件
31      * onStartTrackingTouch：进度条开始拖动事件
32      * onStopTrackingTouch：进度条停止拖动事件
33      * (non-Javadoc)
34      * @see android.widget.SeekBar.OnSeekBarChangeListener#onProgressChanged(android.widget.SeekBar, int, boolean)
35      */
36     @Override
37     public void onProgressChanged(SeekBar seekBar, int progress,
38             boolean fromUser) {
39         // TODO Auto-generated method stub
40         if(seekBar1.getId()==R.id.SeekBar1){
41             Toast.makeText(this, "1111111", Toast.LENGTH_SHORT).show();
42             textView1.setText("seekBar1当前位置："+progress);
43         }else{
44             textView2.setText("seekBar2当前位置："+progress);
45         }
46     }
47     @Override
48     public void onStartTrackingTouch(SeekBar seekBar) {
49         // TODO Auto-generated method stub
50         if(seekBar1.getId()==R.id.SeekBar1){
51             textView1.setText("seekBar1开始拖动");
52         }else{
53             textView2.setText("seekBar2开始拖动：");
54         }
55     }
56     @Override
57     public void onStopTrackingTouch(SeekBar seekBar) {
58         // TODO Auto-generated method stub
59         if(seekBar1.getId()==R.id.SeekBar1){
60             textView1.setText("seekBar1停止拖动");
61         }else{
62             textView2.setText("seekBar2停止拖动：");
63         }
64     }
65 }

/SeekBarDemo1/res/layout/activity01.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical" >
 6 
 7     <TextView 
 8         android:id="@+id/TextView1_seekBar"
 9         android:layout_width="fill_parent"
10         android:layout_height="wrap_content"
11         android:text="TextView1"
12         />
13      <TextView 
14         android:id="@+id/TextView2_seekBar"
15         android:layout_width="fill_parent"
16         android:layout_height="wrap_content"
17         android:text="TextView2"
18         />
19      
20      <SeekBar 
21          android:id="@+id/SeekBar1"
22          android:layout_width="match_parent"
23          android:layout_height="wrap_content"
24          android:progress="30"
25          />
26      
27      <SeekBar 
28          android:id="@+id/SeekBar2"
29          android:layout_width="match_parent"
30          android:layout_height="wrap_content"
31          android:progress="60"
32          />
33 
34 
35 
36 </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