提供一个将毫秒字段转换成时分的方法。
 
+ (
NSString *)ConvertStrToTime:(
NSString *)timeStr
{
    
long long time=[timeStr longLongValue];
    
NSDate *d = [[
NSDate alloc]initWithTimeIntervalSince1970:time/
1000.0];
    NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
    [formatter setDateFormat:@
"mm:ss"];
    
NSString*timeString=[formatter stringFromDate:d];
    
return timeString;
}
                
                
                
        
    
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