本文为大家分享了CountDownTimer模拟短信验证倒计时的具体代码，供大家参考，具体内容如下
内容：介绍倒计时CountDownTimer的基本使用方法。模拟短信验证
步骤：
1、继承CountDownTimer，重写onTick()、onFinish()
2、代码中new出CountDownTimer子类，传好参数，调用start()执行
代码如下：
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.leixiansheng.countdowntimer.MainActivity"> <TextView android:id="@+id/tv_getMsg" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="获取短信验证码" android:background="@color/colorPrimaryDark" android:textSize="16sp" android:textColor="#ffffffff" /> </RelativeLayout>
TimerCount
package com.example.leixiansheng.countdowntimer;
import android.os.CountDownTimer;
import android.widget.TextView;
/**
* Created by Leixiansheng on 2018/7/18.
*/
public class TimerCount extends CountDownTimer {
private TextView mTextView;
public TimerCount(long millisInFuture, long countDownInterval, TextView textView) {
super(millisInFuture, countDownInterval);
mTextView = textView;
}
@Override
public void onTick(long millisUntilFinished) {
mTextView.setClickable(false);
mTextView.setText("重新获取" + millisUntilFinished / 1000 + "秒");
}
@Override
public void onFinish() {
mTextView.setClickable(true);
mTextView.setText("获取短信验证码");
}
}
Main
package com.example.leixiansheng.countdowntimer;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final TextView textView = (TextView) findViewById(R.id.tv_getMsg);
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
/**
* millisInFuture:要计数的总时长
* countDownInterval:每隔多少秒响应
*/
TimerCount timerCount = new TimerCount(5000, 1000, textView);
timerCount.start();
}
});
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持找一找教程网。
