Objective-C 基本 function

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繁中版

初学 IOS 很多基本的功能都不会使用，我习惯把一些好行的程式，包成一个简单使用的 function。

第一个功能，读取档案内容。

readFile

NSError *error;
    NSString* content = [NSString stringWithContentsOfFile:filename
                                                  encoding:NSUTF8StringEncoding
                                                     error:&error];
    if(error) {
        NSLog(@"error = %@", error);
    }

取得当前目录

NSString *curDir = [[NSFileManager defaultManager] currentDirectoryPath];

取得 app 执行目录

NSString *myPath = [[NSBundle mainBundle] bundlePath];

储存资料至 IOS

Example

//存资料
[[NSUserDefaults standardUserDefaults]
          setObject:[NSString stringWithFormat:@"test"] forKey:@"score"];
 
//同步
[[NSUserDefaults standardUserDefaults] synchronize];
        
//取资料
        NSString *score = [[NSUserDefaults standardUserDefaults]
                               stringForKey:@"score"];
        NSLog(@"score = %@",score);

移除小键盘

Example

[[[UIApplication sharedApplication] keyWindow] endEditing:YES];

Timer

Example

[NSTimer scheduledTimerWithTimeInterval:1.0
                                     target:self
                                   selector:@selector(setTime)
                                   userInfo:nil
                                    repeats:YES];

自动念单字 (机器发音)

Example

NSString *name = @"Michael Jordan";
NSLog(@"%@", name);
AVSpeechUtterance *utterance = [AVSpeechUtterance
                                speechUtteranceWithString:name];
AVSpeechSynthesizer *synth = [[AVSpeechSynthesizer alloc] init];
[synth speakUtterance:utterance];

弹出一个视窗

UIAlertView

网页好读版

This post was last modified by puritys 2015/05/22