SeekBar 拖动条

绑定监听：
	onStopTrackingTouch:当用户对拖动条的拖动动作完成时触发
	onStartTrackingTouch:当用户对拖动条的拖动时触发
	onProgressChanged:当拖动条的值发生改变时触发
	
	
	private TextView tv;
	private SeekBar seekBar;
	
	
	
	seekBar = (SeekBar)findViewById(R.id.seekBar);
		tv = (TextView)findViewById(R.id.tv);
		seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
			public void onProgressChanged(SeekBar seekBar, int progress,
					boolean fromUser) {
				tv.setText("当前拖动条的值为："+progress);
			}

			@Override
			public void onStartTrackingTouch(SeekBar seekBar) {
				tv.setText("拖动条拖动中.....");
			}

			@Override
			public void onStopTrackingTouch(SeekBar seekBar) {
				tv.setText("拖动条拖动完成");
			}
		});
		
		
		 <TextView 
        android:id="@+id/tv"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/barStr"
        />
    <SeekBar
        android:id="@+id/seekBar" 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:max="100"
        android:progress="1"
        />