本文為大家分享了CountDownTimer模擬短信驗證倒計時的具體代碼，供大家參考，具體內容如下
內容：介紹倒計時CountDownTimer的基本使用方法。模擬短信驗證
步驟：
1、繼承CountDownTimer，重寫onTick()、onFinish()
2、代碼中new出CountDownTimer子類，傳好參數，調用start()執行
代碼如下：
<?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="獲取短信驗證碼" 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("重新獲取" + millisUntilFinished / 1000 + "秒"); } @Override public void onFinish() { mTextView.setClickable(true); mTextView.setText("獲取短信驗證碼"); }}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:要計數的總時長 * countDownInterval:每隔多少秒響應 */ TimerCount timerCount = new TimerCount(5000, 1000, textView); timerCount.start(); } }); }}以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
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