有关创建iPhone Piano UI的问题
我正在尝试创建一个iPhone钢琴应用程序。
我在Interface Builder中创建了14个不同的UIImageViews来表示键。使用touchesBegan，touchesMoved，touchesEnded和touchesCancelled然后我尝试播放音频文件。
因此，一旦你移动手指播放声音（touchesMoved），我已经用NSMutableArray解决了。
代码（我只复制了C Key，其他键的代码是相同的）如下所示：
我的.h文件：
@interface PianoViewController : UIViewController {
IBOutlet UIImageView *pianoButtonC;
IBOutlet UIImageView *pianoButtonCC;
IBOutlet UIImageView *pianoButtonD;
IBOutlet UIImageView *pianoButtonDb;
IBOutlet UIImageView *pianoButtonDbDb;
IBOutlet UIImageView *pianoButtonE;
IBOutlet UIImageView *pianoButtonEb;
IBOutlet UIImageView *pianoButtonF;
IBOutlet UIImageView *pianoButtonG;
IBOutlet UIImageView *pianoButtonGb;
IBOutlet UIImageView *pianoButtonH;
IBOutlet UIImageView *pianoButtonHb;
CGPoint location;
NSMutableArray *lastButtons;
UITouch *touch;
}
@end
#import "PianoViewController.h"
@implementation PianoViewController
-(void)viewDidLoad {
[super viewDidLoad];
[self.view setMultipleTouchEnabled:YES];
lastButtons = [[NSMutableArray alloc] init];
[lastButtons insertObject:@"notPressedC" atIndex:0];
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
for(touch in [event allTouches]){
if(CGRectContainsPoint(pianoButtonC.frame, [touch locationInView:touch.view]) && [lastButtons containsObject:@"notPressedC"]) {
[pianoButtonC setHighlighted: YES];
NSString *path = [[NSBundle mainBundle] pathForResource:@"pianoC"ofType:@"wav"];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef) [NSURL fileURLWithPath:path], &soundID);
AudioServicesPlaySystemSound (soundID);
[lastButtons replaceObjectAtIndex:0 withObject:@"pressedC"];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
for(touch in [event allTouches]){
if(CGRectContainsPoint(pianoButtonC.frame, [touch locationInView:touch.view]) && [lastButtons containsObject:@"notPressedC"]) {
[pianoButtonC setHighlighted: YES];
NSString *path = [[NSBundle mainBundle] pathForResource:@"pianoC"ofType:@"wav"];
SystemSoundID soundID;
AudioServicesCreateSystemSoundID((CFURLRef) [NSURL fileURLWithPath:path], &soundID);
AudioServicesPlaySystemSound (soundID);
[lastButtons replaceObjectAtIndex:0 withObject:@"pressedC"];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
[lastButtons replaceObjectAtIndex:0 withObject:@"notPressedC"];
[pianoButtonC setHighlighted: NO];
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
[self touchesEnded:touches withEvent:event];
}
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationLandscapeRight
);
}
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
[lastButtons release];
}
@end
没有找到相关结果
已邀请:
1 个回复
恋裂