Xcode問題！預期「;」方法原型

Question

我剛開始使用Xcode，我正在和一些朋友一起製作一個簡單的音板應用程序。

我遇到了第一行的問題。我寫了代碼，我很確定它是正確的，但我不明白爲什麼在這裏！我得到一個「預期」;'方法原型後「，並試圖解決它的一切，只是插入分號給我3錯誤。這裏是我的代碼

'#import "ViewController.h"' 

@interface ViewController() 

// Sound for Ben 
- (IBAction)playsound1 { // this is where the error is. It is not on any other line 

NSString *path = [[NSBundle mainBundle] pathForResource:@"Ben" ofType:@"mp3"]; 
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; 

theAudio.delegate=self; 
[theAudio play]; 
} 
// Sound for Bruno 
- (IBAction)playsound2 { 

NSString *path = [[NSBundle mainBundle] pathForResource:@"Bruno" ofType:@"mp3"]; 
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; 

theAudio.delegate=self; 
[theAudio play]; 
} 
// Sound for Homer 
- (IBAction)playsound3 { 

NSString *path = [[NSBundle mainBundle] pathForResource:@"Homer" ofType:@"mp3"]; 
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; 

theAudio.delegate=self; 
[theAudio play]; 
} 
// Sound for Jon 
- (IBAction)playsound4 { 

NSString *path = [[NSBundle mainBundle] pathForResource:@"Jon" ofType:@"mp3"]; 
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; 

theAudio.delegate=self; 
[theAudio play]; 
} 
// Sound for Mark 
- (IBAction)playsound5 { 

NSString *path = [[NSBundle mainBundle] pathForResource:@"Mark" ofType:@"mp3"]; 
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; 

theAudio.delegate=self; 
[theAudio play]; 
} 
// Sound for Mikey 
- (IBAction)playsound6 { 

NSString *path = [[NSBundle mainBundle] pathForResource:@"Mikey" ofType:@"mp3"]; 
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL  fileURLWithPath:path] error:NULL]; 

theAudio.delegate=self; 
[theAudio play]; 
} 
// Sound for Omar 
- (IBAction)playsound7 { 

NSString *path = [[NSBundle mainBundle] pathForResource:@"Omar" ofType:@"mp3"]; 
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; 

theAudio.delegate=self; 
[theAudio play]; 
} 
// Sound for Tom 
- (IBAction)playsound8 { 

NSString *path = [[NSBundle mainBundle] pathForResource:@"Tom" ofType:@"mp3"]; 
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; 

theAudio.delegate=self; 
[theAudio play]; 
} 
// Sound for Victor 
- (IBAction)playsound9 { 

NSString *path = [[NSBundle mainBundle] pathForResource:@"Victor" ofType:@"mp3"]; 
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; 

theAudio.delegate=self; 
[theAudio play]; 
} 
@end 

@implementation ViewController 

- (void)viewDidLoad 
{ 
[super viewDidLoad]; 
// Do any additional setup after loading the view, typically from a nib. 
} 

- (void)didReceiveMemoryWarning 
{ 
[super didReceiveMemoryWarning]; 
// Dispose of any resources that can be recreated. 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); 
} 

@end 

---

嘿，所有的錯誤，現在走了，但在運行時，當我點擊一個按鈕，它關閉，這裏需要我

#import <UIKit/UIKit.h> 

#import "AppDelegate.h" 

int main(int argc, char *argv[]) 
    { 
     @autoreleasepool { 
     return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); 
    } 
} 

突出的「在「main.m」中以綠色返回「line」，出現SIGABRT錯誤？

Answer 1

我有第一線

當然你是問題 - 您已在接口部分有完整的功能。界面應該只包含方法原型。方法定義進入實現部分。您有：

@interface ViewController() 

- (IBAction)playsound1 { // this is where the error is. It is not on any other line 

NSString *path = [[NSBundle mainBundle] pathForResource:@"Ben" ofType:@"mp3"]; 
AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; 

theAudio.delegate=self; 
[theAudio play]; 
} 

這應該改爲：

@interface ViewController() 

- (IBAction)playsound1; 

// ... 
@end 

其次是：（我加了一些缺口，方便閱讀）

@implementation ViewController 

- (IBAction)playsound1 { // this is where the error is. It is not on any other line 
    NSString *path = [[NSBundle mainBundle] pathForResource:@"Ben" ofType:@"mp3"]; 
    AVAudioPlayer* theAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; 

    theAudio.delegate=self; 
    [theAudio play]; 
} 

// ... 
@end 

Answer 2

你不應該方法的定義寫在@interface ... @end。你只能聲明方法。在@implementation ....@end中寫下你方法的定義，並在@interfaece...@end中聲明你的方法。

我認爲這會對您有所幫助。