Counter.java

package com.jiuqi.njt.register;

import com.jiuqi.njt.R;
import com.jiuqi.util.UIUtil;

import android.os.CountDownTimer;
import android.widget.Button;

public class Counter extends CountDownTimer {

	private Button verificationBtn;
	
	/**
	 * 计数器
	 * @param millisInFuture    
	 * 计数器的总时间
	 * @param countDownInterval
	 * 计数器每次计数减少的时间
	 * @param verificationBtn
	 *  计数按钮，负责更新按钮的状态和文字效果
	 */
	public Counter(long millisInFuture, long countDownInterval,Button verificationBtn) {
		super(millisInFuture, countDownInterval);
		// TODO Auto-generated constructor stub
		this.verificationBtn =verificationBtn;
	}

	@Override
	public void onFinish() {
		// TODO Auto-generated method stub
		verificationBtn.setText("点击获取短信验证码");
		verificationBtn.setBackgroundResource(R.drawable.btn_bg_small_orange);
		UIUtil.setWidgetEnabled(verificationBtn, true);
	}

	@Override
	public void onTick(long millisUntilFinished) {
		// TODO Auto-generated method stub
		verificationBtn.setBackgroundResource(R.drawable.btn_bg_small_greay);
		UIUtil.setWidgetEnabled(verificationBtn, false);
		verificationBtn.setText("(" + millisUntilFinished / 1000 + ")秒后重新获取");
	}

}