Android SeekBar(2)

        sb.setMax(100 ); 
        sb.setProgress(30 ); 
        tv1.setText("当前进度："  + sb.getProgress()); 
 
        // 设置拖动条改变监听器  
        OnSeekBarChangeListener osbcl = new  OnSeekBarChangeListener() { 
 
            @Override  
            public   void  onProgressChanged(SeekBar seekBar,  int  progress, 
                    boolean  fromUser) { 
                tv1.setText("当前进度："  + sb.getProgress()); 
                Toast.makeText(getApplicationContext(), "onProgressChanged" , 
                        Toast.LENGTH_SHORT).show(); 
            } 
 
            @Override  
            public   void  onStartTrackingTouch(SeekBar seekBar) { 
                Toast.makeText(getApplicationContext(), "onStartTrackingTouch" , 
                        Toast.LENGTH_SHORT).show(); 
            } 
 
            @Override  
            public   void  onStopTrackingTouch(SeekBar seekBar) { 
                Toast.makeText(getApplicationContext(), "onStopTrackingTouch" , 
                        Toast.LENGTH_SHORT).show(); 
            } 
 
        }; 
 
        // 为拖动条绑定监听器