SeekBar的使用

SeekBar监听器为SeekBar.onSeekBarChangeListener

Main

 1 package seekdemo.example.administrator.seekbardemo;
 2 
 3 import android.support.v7.app.AppCompatActivity;
 4 import android.os.Bundle;
 5 import android.widget.SeekBar;
 6 import android.widget.TextView;
 7 
 8 public class MainActivity extends AppCompatActivity implements SeekBar.OnSeekBarChangeListener{
 9     private SeekBar seekBar;
10     private TextView textView1;
11     private TextView textView2;
12     @Override
13     protected void onCreate(Bundle savedInstanceState)  {
14         super.onCreate(savedInstanceState);
15         setContentView(R.layout.main);
16         seekBar= (SeekBar) findViewById(R.id.seekBar);
17         textView1= (TextView) findViewById(R.id.text1);
18         textView2= (TextView) findViewById(R.id.text2);
19         seekBar.setOnSeekBarChangeListener(this);
20 
21     }
22     //  正在拖动
23     @Override
24     public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
25         textView1.setText("正在拖动");
26         textView2.setText("当前"+progress);
27     }
28     //  开始拖动
29     @Override
30     public void onStartTrackingTouch(SeekBar seekBar) {
31         textView1.setText("开始拖动");
32     }
33     //  停止拖动
34     @Override
35     public void onStopTrackingTouch(SeekBar seekBar) {
36         textView1.setText("停止拖动");
37     }
38 }

layout中main.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:orientation="vertical" android:layout_width="match_parent"
 4     android:layout_height="match_parent">
 5     <TextView
 6         android:layout_width="match_parent"
 7         android:layout_height="wrap_content"
 8         android:id="@+id/text1"
 9         />
10     <TextView
11         android:layout_width="match_parent"
12         android:layout_height="wrap_content"
13         android:id="@+id/text2"
14         />
15     <SeekBar
16         android:layout_width="match_parent"
17         android:layout_height="wrap_content"
18         android:id="@+id/seekBar"
19         android:progress="50"
20         android:max="100"
21         android:thumb="@drawable/btn_radio_on_holo_light"/><!--thumb改变滑块样式-->
22 </LinearLayout>

 

posted @ 2016-05-09 20:07  成功人土  阅读(419)  评论(0)    收藏  举报