我正在开发一个间隔计时器，这可能会让你想到Gymboss计时器。这是比较结束的地方。
让我们假设您使用步进器将整个锻炼时间设置为10分钟。你希望每次重复持续1分钟，每次休息30秒。虽然我设法在“计时”方法中编码将在锻炼结束时播放的声音，但是当重复或休息结束时，我仍然在努力使声音播放。这是代码中标题的相关部分：
#import <AudioToolbox/AudioToolbox.h>
@interface AutoLayoutViewController : UIViewController <AVAudioPlayerDelegate>
// 1. The three green labels
// Workout's timer
{
IBOutlet UILabel *workoutTimer;
NSTimer *workoutCountdown;
}
// Repetition's length
@property (strong, nonatomic) IBOutlet UILabel *repetitionLabel;
// Break's length
@property (strong, nonatomic) IBOutlet UILabel *breakLabel;
// 2. The three steppers
// Stepper for Workout's total length
@property (strong, nonatomic) IBOutlet UIStepper *secondsWorkoutChanged;
// Stepper for Repetition's length
@property (strong, nonatomic) IBOutlet UIStepper *secondsRepetitionChanged;
// Stepper for Break's length
@property (strong, nonatomic) IBOutlet UIStepper *secondsBreakChanged;
// 4. The start button
@property (strong, nonatomic) IBOutlet UIButton *startPauseButton;
@end
其次，这是实施文件的相关部分：
// 1. Steppers
// Stepper for Workout's length
- (IBAction)secondsWorkoutChanged:(UIStepper *)sender {
/* User increases value of seconds with stepper. Whenever variable for seconds is equal or greater than 60, the program sets the value of minutes through this division: seconds / 60. */
seconds = [sender value];
minutes = seconds / 60;
/* "If" statement for resetting seconds to 0 in order for the label to look like a watch. REAL number of seconds stored by stepper modulus operated by 60.
*/
if (seconds > 59) {
seconds = seconds % 60;
} // End if.
[workoutTimer setText: [NSString stringWithFormat:@"%2i : %2i", (int) minutes, (int) seconds]];
}
// Stepper for Repetition's length
- (IBAction)secondsRepetitionChanged:(UIStepper *)sender {
/* User increase value of secondsBreak with stepper. Whenever variable for secondsBreak exceeds 60, the program sets the value of minutesBreak by dividing the number of seconds with 60. */
secondsRepetition = [sender value];
minutesRepetition = secondsRepetition / 60;
/* "If" statement for resetting secondsBreak to 0 in order for the label to look like a watch. REAL number of seconds stored by stepper modulus operated by 60.
*/
if (secondsRepetition > 59) {
secondsRepetition = secondsRepetition % 60;
} // End if.
[_repetitionLabel setText: [NSString stringWithFormat:@"%2i : %2i", (int) minutesRepetition, (int) secondsRepetition]];
}
// Stepper for Break's length
- (IBAction)secondsBreakChanged:(UIStepper *)sender {
/* User increase value of secondsBreak with stepper. Whenever variable for secondsBreak exceeds 60, the program sets the value of minutesBreak by dividing the number of seconds with 60. */
secondsBreak = [sender value];
minutesBreak = secondsBreak / 60;
/* "If" statement for resetting secondsBreak to 0 in order for the label to look like a watch. REAL number of seconds stored by stepper modulus operated by 60.
*/
if (secondsBreak > 59) {
secondsBreak = secondsBreak % 60;
} // End if.
[_breakLabel setText: [NSString stringWithFormat:@"%2i : %2i", (int) minutesBreak, (int) secondsBreak]];
}
// 3. The buttons
// Method for countdown
- (void)chrono:(NSTimer *)timer
{ // First brace for "chrono" method.
// Timer loses 1 second when started.
seconds = seconds -= 1;
workoutTimer.text = [NSString stringWithFormat: @"%2i : %2i", minutes, seconds];
// If "statement for including minutes in countdown.
if (seconds <= 0) {
if (minutes <= 0) {
[workoutCountdown invalidate]; // 1: If both minutes and seconds = 0, countdown ends.
// 1.1: Alarm for end of workout.
CFBundleRef workoutEnded = CFBundleGetMainBundle();
CFURLRef soundFileURLRef;
soundFileURLRef = CFBundleCopyResourceURL(workoutEnded, (CFStringRef) @"alarm_clock_ringing", CFSTR ("wav"), NULL);
UInt32 soundID;
AudioServicesCreateSystemSoundID(soundFileURLRef, &soundID);
AudioServicesPlaySystemSound(soundID);
// Reset all steppers when workout ends.
_secondsWorkoutChanged.value = 0;
_secondsRepetitionChanged.value = 0;
_secondsBreakChanged.value = 0;
// Reset the text displayed in the label to zero.
[workoutTimer setText:@"00 : 00"];
[_repetitionLabel setText:@"00 : 00"];
[_breakLabel setText:@"00 : 00"];
} // End of "if" statement" for minutes.
else { // Timer still running
seconds = 60;
minutes -= 1;
} // End of else.
} // End of all the "if" (general).
} // Last brace for "chrono" method.
//Start button
-(IBAction) startPauseButton:(UIButton *)sender {
workoutCountdown = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(chrono:) userInfo:nil repeats:YES];
}
我的问题如下。当重复和休息结束时，如何进行声音播放？出于演示目的，您可以使用“chrono”方法的声音代码行。
感谢。
Anh Khoi
答案 0 :(得分：0)
尝试在实施文件中实施以下更改：
[注意：我重新定位了变量的声明语句，并添加了两个新的变量 secondsValue和minutesValue]
@implementation CDTViewController
{
// instance variables
int seconds;
int minutes;
int secondsRepetition;
int minutesRepetition;
int secondsBreak;
int minutesBreak;
int secondsValue;
int minutesValue;
BOOL startBreakTimer;
BOOL startRepetitionTimer;
}
- (void)viewDidLoad
{
[super viewDidLoad];
startRepetitionTimer = YES;
startBreakTimer = NO;
}
- (IBAction)secondsRepetitionChanged:(UIStepper *)sender {
minutesRepetition = [sender value] / 60;
secondsRepetition = (int)[sender value] % 60;
secondsValue = secondsRepetition;
minutesValue = minutesRepetition;
[_repetitionLabel setText: [NSString stringWithFormat:@"%2i : %2i", (int) minutesRepetition, (int) secondsRepetition]];
}- (IBAction)secondsBreakChanged:(UIStepper *)sender {
minutesBreak = [sender value] / 60;
secondsBreak = (int)[sender value] % 60;
[_breakLabel setText: [NSString stringWithFormat:@"%2i : %2i", (int) minutesBreak, (int) secondsBreak]];
}- (void)chrono:(NSTimer *)timer
{
seconds -= 1;
secondsValue -= 1;
if (seconds < 0) {
seconds = 59;
minutes -= 1;
if (minutes < 0) {
minutes = 0;
}
}
if (secondsValue < 0) {
secondsValue = 59;
minutesValue -= 1;
if (minutesValue < 0) {
minutesValue = 0;
}
}
workoutTimer.text = [NSString stringWithFormat: @"%2i : %2i", minutes, seconds];
if (startRepetitionTimer) {
_repetitionLabel.text = [NSString stringWithFormat: @"%2i : %2i",minutesValue, secondsValue];
_breakLabel.text = [NSString stringWithFormat: @"%2i : %2i", minutesBreak, secondsBreak];
if (secondsValue == 0) {
if (minutesValue == 0) {
startBreakTimer = YES;
startRepetitionTimer = NO;
secondsValue = secondsBreak;
minutesValue = minutesBreak;
/* write code to play repetition alarm
here */
}
}
}
else if (startBreakTimer) {
_repetitionLabel.text = [NSString stringWithFormat: @"%2i : %2i",minutesRepetition, secondsRepetition];
_breakLabel.text = [NSString stringWithFormat: @"%2i : %2i", minutesValue, secondsValue];
if (secondsValue == 0) {
if (minutesValue == 0) {
startBreakTimer = NO;
startRepetitionTimer = YES;
secondsValue = secondsRepetition;
minutesValue = minutesRepetition;
/* write code to play break alarm
here */
}
}
}
if (seconds == 0) {
if (minutes == 0) {
[workoutCountdown invalidate];
// Alarm for end of workout.
// Reset all steppers when workout ends.
_secondsWorkoutChanged.value = 0;
_secondsRepetitionChanged.value = 0;
_secondsBreakChanged.value = 0;
// Reset the text displayed in the label to zero.
[workoutTimer setText:@"00 : 00"];
[_repetitionLabel setText:@"00 : 00"];
[_breakLabel setText:@"00 : 00"];
return;
}
}
}
希望这个逻辑可以帮到你！