1 public class MainActivity extends AppCompatActivity {
 2     private SeekBar sb;
 3     private TextView tv;
 4 
 5     @Override
 6     protected void onCreate(Bundle savedInstanceState) {
 7         super.onCreate(savedInstanceState);
 8         setContentView(R.layout.activity_main);
 9         sb=(SeekBar)findViewById(R.id.sb);
10         tv=(TextView) findViewById(R.id.tv);
11         sb.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
12             @Override
13             public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
14                 tv.setText("The progress is "+progress+"%");
15             }
16 
17             @Override
18             public void onStartTrackingTouch(SeekBar seekBar) {
19 
20             }
21 
22             @Override
23             public void onStopTrackingTouch(SeekBar seekBar) {
24 
25 
26             }
27         });
28     }
29 }

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout
 3     xmlns:android="http://schemas.android.com/apk/res/android"
 4      android:orientation="vertical"
 5     xmlns:tools="http://schemas.android.com/tools"
 6     android:layout_width="match_parent"
 7     android:layout_height="match_parent"
 8     tools:context="com.zhangmeng.www.seekbar.MainActivity">
 9     <SeekBar
10         android:id="@+id/sb"
11         android:layout_width="match_parent"
12         android:layout_height="wrap_content"/>
13     <TextView
14         android:id="@+id/tv"
15         android:layout_width="match_parent"
16         android:layout_height="wrap_content"/>
17 
18 
19 
20 </LinearLayout>