Android实现获取验证码 ,60秒倒计时后重新获取

package com.example.countdowntimer;  
    
    
    
import android.os.Bundle;  
import android.os.CountDownTimer;  
import android.app.Activity;  
import android.graphics.Color;  
import android.view.Menu;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
    
public class MainActivity extends Activity {  
    private TimeCount time;  
    private Button btnGetcode;  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  
        time = new TimeCount(60000, 1000);  
        btnGetcode=(Button) findViewById(R.id.btn_getcode);  
        btnGetcode.setOnClickListener(new OnClickListener() {  
                
            @Override  
            public void onClick(View v) {  
                time.start();  
            }  
        });  
    }  
    class TimeCount extends CountDownTimer {  
    
        public TimeCount(long millisInFuture, long countDownInterval) {  
            super(millisInFuture, countDownInterval);  
        }  
    
        @Override  
        public void onTick(long millisUntilFinished) {  
            btnGetcode.setBackgroundColor(Color.parseColor("#B6B6D8"));  
            btnGetcode.setClickable(false);  
            btnGetcode.setText("("+millisUntilFinished / 1000 +") 秒后可重新发送");  
        }  
    
        @Override  
        public void onFinish() {  
            btnGetcode.setText("重新获取验证码");  
            btnGetcode.setClickable(true);  
            btnGetcode.setBackgroundColor(Color.parseColor("#4EB84A"));  
    
        }  
    }  
    
}