Ios 从每个视图控制器调用方法

我想从每个视图控制器调用此方法。但我不知道此方法将写入何处以及如何调用此方法

-(void)playSound{

NSURL *url=[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"sound" ofType:@"mp3"]];
NSData *data =[NSData dataWithContentsOfURL:url];
audioPlayer  = [[AVAudioPlayer alloc] initWithData:data error:nil];
audioPlayer.delegate = self;
[audioPlayer setNumberOfLoops:0];
[audioPlayer play];
}

---

您可以创建一个

BaseViewController

并在

BaseViewController.h

中声明此方法，并在

BaseViewController.m

文件中实现，然后将所有

ViewController

设置为

BaseViewController

的子级

BaseViewController.h

@interface BaseViewController : UIViewController

-(void)playSound;

@end

@interface ViewController : BaseViewController

@end

BaseViewController.m

@interface BaseViewController ()

@end

@implementation BaseViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

}

-(void)playSound {
     NSURL *url=[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"sound" ofType:@"mp3"]];
     NSData *data =[NSData dataWithContentsOfURL:url];
     audioPlayer  = [[AVAudioPlayer alloc] initWithData:data error:nil];
     audioPlayer.delegate = self;
     [audioPlayer setNumberOfLoops:0];
     [audioPlayer play];
}
@end

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self playSound];
}
@end

现在在您的视图控制器.h

@interface BaseViewController : UIViewController

-(void)playSound;

@end

@interface ViewController : BaseViewController

@end

ViewController.m

@interface BaseViewController ()

@end

@implementation BaseViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

}

-(void)playSound {
     NSURL *url=[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"sound" ofType:@"mp3"]];
     NSData *data =[NSData dataWithContentsOfURL:url];
     audioPlayer  = [[AVAudioPlayer alloc] initWithData:data error:nil];
     audioPlayer.delegate = self;
     [audioPlayer setNumberOfLoops:0];
     [audioPlayer play];
}
@end

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self playSound];
}
@end

---

您可以创建一个

BaseViewController

并在

BaseViewController.h

中声明此方法，并在

BaseViewController.m

文件中实现，然后将所有

ViewController

设置为

BaseViewController

的子级

BaseViewController.h

@interface BaseViewController : UIViewController

-(void)playSound;

@end

@interface ViewController : BaseViewController

@end

BaseViewController.m

@interface BaseViewController ()

@end

@implementation BaseViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

}

-(void)playSound {
     NSURL *url=[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"sound" ofType:@"mp3"]];
     NSData *data =[NSData dataWithContentsOfURL:url];
     audioPlayer  = [[AVAudioPlayer alloc] initWithData:data error:nil];
     audioPlayer.delegate = self;
     [audioPlayer setNumberOfLoops:0];
     [audioPlayer play];
}
@end

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self playSound];
}
@end

现在在您的视图控制器.h

@interface BaseViewController : UIViewController

-(void)playSound;

@end

@interface ViewController : BaseViewController

@end

ViewController.m

@interface BaseViewController ()

@end

@implementation BaseViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.

}

-(void)playSound {
     NSURL *url=[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"sound" ofType:@"mp3"]];
     NSData *data =[NSData dataWithContentsOfURL:url];
     audioPlayer  = [[AVAudioPlayer alloc] initWithData:data error:nil];
     audioPlayer.delegate = self;
     [audioPlayer setNumberOfLoops:0];
     [audioPlayer play];
}
@end

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self playSound];
}
@end

---

您可以创建一个类别：

@interface UIViewController (UIViewControllerAudio)

-(void)playSound;

@end


@implementation UIViewController (UIViewControllerAudio)

- (void)playSound{
    NSURL *url=[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"sound" ofType:@"mp3"]];
    NSData *data =[NSData dataWithContentsOfURL:url];
    audioPlayer  = [[AVAudioPlayer alloc] initWithData:data error:nil];
    audioPlayer.delegate = self;
    [audioPlayer setNumberOfLoops:0];
    [audioPlayer play];
}

@end

以及您可以在视图控制器中调用的：

[self playSound];

---

您可以创建一个类别：

@interface UIViewController (UIViewControllerAudio)

-(void)playSound;

@end


@implementation UIViewController (UIViewControllerAudio)

- (void)playSound{
    NSURL *url=[NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"sound" ofType:@"mp3"]];
    NSData *data =[NSData dataWithContentsOfURL:url];
    audioPlayer  = [[AVAudioPlayer alloc] initWithData:data error:nil];
    audioPlayer.delegate = self;
    [audioPlayer setNumberOfLoops:0];
    [audioPlayer play];
}

@end

以及您可以在视图控制器中调用的：

[self playSound];

---

步骤1

创建一个BaseViewController

@interface BaseViewController : UIViewController

 - (void) playSound;

 @end

步骤2

在那个BaseViewController.m上

步骤3

  #import "BaseViewController.h"

// Notice this class is a subclass of BaseViewController (parent)
@interface yourViewController : BaseViewController
@end

步骤-4

你可以直接打电话

- (void)viewDidLoad
{
[super viewDidLoad];
 [self playSound];
}

---

步骤1

创建一个BaseViewController

@interface BaseViewController : UIViewController

 - (void) playSound;

 @end

步骤2

在那个BaseViewController.m上

步骤3

  #import "BaseViewController.h"

// Notice this class is a subclass of BaseViewController (parent)
@interface yourViewController : BaseViewController
@end

步骤-4

你可以直接打电话

- (void)viewDidLoad
{
[super viewDidLoad];
 [self playSound];
}

---

在appdelegate文件中声明可以提供示例创建单独的NSObject类并粘贴此方法。并在任何需要检查此链接的地方调用它-->您不能将此方法链接到任何地方，因为它具有依赖性-（audioPlayer在作用域之外声明，并且还分配了其委托属性）。一种方法是将其全部打包（包括audioPlayer）到一个singleton对象中，并在任何想要播放声音的类中导入singleton.h。在appdelegate文件中声明您能否提供示例创建一个单独的NSObject类并粘贴此方法。并在任何需要检查此链接的地方调用它-->您不能将此方法链接到任何地方，因为它具有依赖性-（audioPlayer在作用域之外声明，并且还分配了其委托属性）。一种方法是将它全部打包（包括audioPlayer）到一个singleton对象中，并在任何想要播放声音的类中导入singleton.h。