1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:paddingBottom="@dimen/activity_vertical_margin"
 6     android:paddingLeft="@dimen/activity_horizontal_margin"
 7     android:paddingRight="@dimen/activity_horizontal_margin"
 8     android:paddingTop="@dimen/activity_vertical_margin"
 9     tools:context="first.pack.MainActivity$PlaceholderFragment" >
10
11     <SeekBar
12         android:id="@+id/firstSeekbar"
13         android:layout_width="match_parent"
14         android:layout_height="wrap_content"
15         android:max="100"
16         />
17
18 </RelativeLayout>

 1 public static class PlaceholderFragment extends Fragment {
 2
 3         private SeekBar seekBar;
 4
 5         public PlaceholderFragment() {
 6         }
 7
 8         @Override
 9         public View onCreateView(LayoutInflater inflater, ViewGroup container,
10                 Bundle savedInstanceState) {
11             View rootView = inflater.inflate(R.layout.fragment_main, container, false);
12
13             seekBar = (SeekBar)rootView.findViewById(R.id.firstSeekbar);
14             seekBar.setProgress(30);
15
16             SeekBarListener seekBarListener = new SeekBarListener();
17             seekBar.setOnSeekBarChangeListener(seekBarListener);
18
19             return rootView;
20         }
21
22         class SeekBarListener implements OnSeekBarChangeListener{
23
24             @Override
25             public void onProgressChanged(SeekBar seekBar, int progress,
26                     boolean fromUser) {
27                 // TODO Auto-generated method stub
28                                 //seekBar当前进度条改变的那个seekBar
29                                 //progress当前的进度
30                                 //fromUser是否是用户手动拖动进度条
31                 Log.i("tag","Progress:" + progress + "; fromUser:" + fromUser);
32             }
33
34             @Override
35             public void onStartTrackingTouch(SeekBar seekBar) {
36                 // TODO Auto-generated method stub
37                 Log.i("tag","OnStart");   //开始拖动就会触发
38             }
39
40             @Override
41             public void onStopTrackingTouch(SeekBar seekBar) {
42                 // TODO Auto-generated method stub
43                 Log.i("tag","OnStop");    //结束拖动就会触发
44             }
45
46         }
47     }

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:paddingBottom="@dimen/activity_vertical_margin"
 6     android:paddingLeft="@dimen/activity_horizontal_margin"
 7     android:paddingRight="@dimen/activity_horizontal_margin"
 8     android:paddingTop="@dimen/activity_vertical_margin"
 9     tools:context="first.pack.MainActivity$PlaceholderFragment" >
10
11     <RatingBar
12         android:layout_width="wrap_content"  //不可使用match_parent，否则显示不对
13         android:layout_height="wrap_content"
14         android:numStars="5"  //5颗星星
15         android:stepSize="0.5"   //step=0.5颗星
16         />
17
18 </RelativeLayout>