Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
394 views
in Technique[技术] by (71.8m points)

ios - backgroundTimeRemaining returns (35791394 mins)?

I'm using beginBackgroundTaskWithExpirationHandler in my application. my understanding the max time given for background application to finish work is 10 minutes, but what i got when I printed the value of backgroundTimeRemaining is (35791394 mins)

NSTimeInterval timeLeft = [UIApplication sharedApplication].backgroundTimeRemaining;
    NSLog(@"Background time remaining2222: %.0f seconds (%d mins)", timeLeft, (int)timeLeft / 60);

is this normal, or it seems I did something wrong?!

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Try:

NSLog(@"Background time remaining2222: %.0f seconds (%d mins)", timeLeft, (int)(timeLeft / 60) );

In your code timeLeft is being changed to an int BEFORE dividing, not after.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...