COCOA® PROGRAMMING FOR MAC® OS X (2)- Speak Line

1、NSControl是所有控件的父类,NSControl继承自NSView,因此NSControl是一个能够独立响应事件的NSView,每个NSControl含有一个Target和Action,当用户与控件交互的时候会发送Action消息。

  这里有一点不明白,IOS中的控件的事件大多都过回调对应协议的方法告知调用方,而NSControl只有一个Action,对于一个Button可以理解,对于一个Table来说应该怎么去响应呢?

 

  COCOA® PROGRAMMING FOR MAC® OS X (2)- Speak Line

 

2、实现SpeakLine demo

  效果图:

  COCOA® PROGRAMMING FOR MAC® OS X (2)- Speak Line

  新建一个空得工程,工程中自动建立好了一个Window

  新建一个ViewController,将ViewController.view 添加到Window的ContentView上面

  代码如下:

  AppDelegate:

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {

    

//    [self.window setBackgroundColor:[NSColor redColor]];

    

    _spVC = [[SPViewController alloc] initWithNibName:@"SPViewController" bundle:nil];

    _spVC.view.frame = NSMakeRect(0, 0, self.window.frame.size.width, self.window.frame.size.height);

    _spVC.view.autoresizingMask = NSViewWidthSizable|NSViewHeightSizable;

    [self.window.contentView addSubview:_spVC.view];

     self.window.title = @"Speak Line";

    

}

  VC对应的代码:

#import "SPViewController.h"



@interface SPViewController ()



@property (weak) IBOutlet NSTextField *speakTextField;



@property (nonatomic, strong) NSSpeechSynthesizer *speechSynth;



@end



@implementation SPViewController



- (void)viewDidLoad {

    [super viewDidLoad];

    // Do view setup here.

    _speechSynth = [[NSSpeechSynthesizer alloc] init];

}



- (IBAction)stop:(id)sender {

    [_speechSynth stopSpeaking];

}



- (IBAction)speak:(id)sender {

    

    if(_speakTextField.stringValue.length > 0)

    {

        [_speechSynth startSpeakingString:_speakTextField.stringValue];

    }

    

}



@end

  

代码地址:http://pan.baidu.com/s/1ntpAR37  

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