如何獲取歌曲的實際時長，如「mm：ss」formate？

Question

assetURL = [item valueForProperty: MPMediaItemPropertyAssetURL]; 
NSLog(@"%@", assetURL); // asset url declares the song url and song path 

AVURLAsset* audioAsset = [AVURLAsset URLAssetWithURL:assetURL options:nil]; // declare the audio asset url 
CMTime audioDuration = audioAsset.duration; // get duration in cm time 
double audioDurationSeconds = CMTimeGetSeconds(audioDuration); // convert audio duration in double 

但是，這是一個問題，因爲我的音頻持續時間只有幾秒鐘，但我需要歌曲持續時間的「MM：SS」格式。

請幫幫我。提前致謝。

Answer 1

NSUInteger audioDurationSeconds = (long)CMTimeGetSeconds(audioDuration); 
NSUInteger minutes = floor(audioDurationSeconds % 3600/60); 
NSUInteger seconds = floor(audioDurationSeconds % 3600 % 60); 
NSString *time = [NSString stringWithFormat:@"%02ld:%02ld", minutes, seconds];