Android實現獲取驗證碼效果

功能非常簡單就是定義一個CountDownTimer直接看代碼

首先在XML裡面放個按鈕代碼如下：

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 + 秒後可重新發送);
		}

		@Override
		public void onFinish() {
			btnGetcode.setText(重新獲取驗證碼);
			btnGetcode.setClickable(true);
			btnGetcode.setBackgroundColor(Color.parseColor(#4EB84A));

		}
	}

}