Android拖动条的实现代码

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 
 
  
  
  
 

package com.amy.seekbartest; 
 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.SeekBar; 
import android.widget.TextView; 
import android.widget.Toast; 
 
public class MainActivity extends AppCompatActivity { 
 
 private SeekBar seekBar;//拖动条 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.activity_main); 
  final TextView result = (TextView) findViewById(R.id.textView1); 
  seekBar = (SeekBar) findViewById(R.id.seekBar1); 
  seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() { 
   @Override 
   public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { 
    result.setText("当前值："+progress); 
   } 
 
   @Override 
   public void onStartTrackingTouch(SeekBar seekBar) { 
    Toast.makeText(MainActivity.this,"开始滑动",Toast.LENGTH_SHORT).show(); 
   } 
 
   @Override 
   public void onStopTrackingTouch(SeekBar seekBar) { 
    Toast.makeText(MainActivity.this,"结束滑动",Toast.LENGTH_SHORT).show(); 
   } 
  }); 
 } 
}