Android countdown program after obtaining the verification code, android Verification Code

Android countdown program after obtaining the verification code, android Verification Code

During development, you will often encounter text message Verification Code retrieval. After obtaining the verification code, you need to wait for a one-minute countdown. This means you cannot send text message requests again. This requires a countdown program.

Here I encapsulated an Util class, hoping to help developers,

Public class TimeCountUtil extends CountDownTimer {
Private Activity mActivity;
Private Button btn; // Button

// In this constructor, You need to input three parameters: Activity, millisInFuture, countDownInterval, and the button on which you perform this operation, just upload the button.
Public TimeCountUtil (Activity mActivity, long millisInFuture, long countDownInterval, Button btn ){
Super (millisInFuture, countDownInterval );
This. mActivity = mActivity;
This. btn = btn;
}


@ SuppressLint ("NewApi ")
@ Override
Public void onTick (long millisUntilFinished ){
Btn. setClickable (false); // you cannot click
Btn. setText (millisUntilFinished/1000 + "resend after seconds"); // set the countdown time

// When the set button is gray, you cannot click it.
Btn. setBackground (mActivity. getResources (). getDrawable (R. drawable. bg_duck_back ));
Spannable span = new SpannableString (btn. getText (). toString (); // get the text of the button
Span. setSpan (new ForegroundColorSpan (Color. RED), 0, 2, Spannable. SPAN_INCLUSIVE_EXCLUSIVE); // The countdown time is RED.
Btn. setText (span );

}


@ SuppressLint ("NewApi ")
@ Override
Public void onFinish (){
Btn. setText ("re-obtain Verification Code ");
Btn. setClickable (true); // obtain the Click again
Btn. setBackground (mActivity. getResources (). getDrawable (R. drawable. bg_btn_back); // restore the background color

}


}

Call Method

Then you can use this method to create an object and call start ();

CountUtil timeCountUtiltimeCountUtil = new TimeCountUtil (this, 60000,100 0, verficationBtn );
TimeCountUtil. start ();

// Obtain the verification code
GetVerificationCode (phoneNum );

Implemented

Is it very easy, hope to help friends!