IOS_项目知识总结

1.获取当前工程版本号

NSString * version = [[NSBundle mainBundle]infoDictionary]objectForKey:@"CFBundleShortVersionString"];

2.获取当前设备序列号唯一标识

NSString *UUID = [[[UIDevice currentDevice] identifierForVendor] UUIDString];

3.将状态栏文字设置成白色；导航栏设置成黑色；标签栏设置成黑色，上面的图标，文字为白色。

//状态栏颜色
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];

//导航栏
UINavigationBar *bar = [UINavigationBar appearance];

[bar setBarStyle:UIBarStyleBlack];

//标签栏
UITabBar *tabBar = [UITabBar appearance];

[tabBar setBarStyle:UIBarStyleBlack];

[tabBar setTintColor:[UIColor whiteColor]];

4.加载本地html

UIWebView *webView = [[UIWebView alloc]initWithFrame:SCREEN];

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

NSURL *baseURL = [NSURL fileURLWithPath:path];

NSString *htmlPath = [[NSBundle mainBundle]pathForResource:self.nameStr ofType:@"html"];

NSLog(@"%@",htmlPath);

NSString *htmlStr = [NSString stringWithContentsOfFile:htmlPath encoding:NSUTF8StringEncoding error:nil];

[webView loadHTMLString:htmlStr baseURL:baseURL];

[self.view addSubview:webView];

5.缓存与加载图片

if (self.qianziphoto != nil) {

            NSString *path_sandox = NSHomeDirectory();

             //设置一个图片的存储路径

             NSString *qianziPhotoPath = [path_sandox    stringByAppendingString:@"/Documents/qianziPhoto.png"];

            //把图片直接保存到指定的路径（同时应该把图片的路径imagePath存起来，下次就可以直接用来取）

            [UIImagePNGRepresentation(self.qianziphoto) writeToFile:qianziPhotoPath atomically:YES];

           //保存路径

           param[@"idcardFrontFile"] = qianziPhotoPath;

}

[defaults setObject:param forKey:@"Activate"];

//取

self.qianziphoto =  [[UIImage alloc] initWithContentsOfFile: [defaults objectForKey:@"Activate"][@"idcardFrontFile"] ];

if (self.qianziphoto != nil) {

          [_qianziBtn setImage:self.qianziphoto forState:UIControlStateNormal];

}else{

          [_qianziBtn setImage:[UIImage imageNamed:@"add_photo2@2x"] forState:UIControlStateNormal];

}