iOS_不常用方法总结

最新推荐文章于 2023-05-24 22:39:04 发布

原创最新推荐文章于 2023-05-24 22:39:04 发布 · 380 阅读

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#下载应用评分 #禁止锁屏 #获得系统的字体

iOS_UI 专栏收录该内容

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获取某个view所在的控制器

- (UIViewController *)viewController {
    UIViewController *viewController = nil;
    UIResponder *next = self.nextResponder;
    while (next)
    {
        if ([next isKindOfClass:[UIViewController class]])
        {
            viewController = (UIViewController *)next;
            break;
        }
        next = next.nextResponder;
    }
    return viewController;
}

获取系统的字体类型和名称

- (void)getSystemFonts{
    for(NSString *familyName in [UIFont familyNames]){

        NSLog(@"%@",familyName);
        NSArray *fontNames = [UIFont fontNamesForFamilyName:familyName];

        for(NSString *fontName in fontNames) {
            NSLog(@"\t|- %@",fontName);
        }
    }
}

禁止锁屏

[UIApplication sharedApplication].idleTimerDisabled = YES;

iOS跳转到App Store下载应用评分

[[UIApplication sharedApplication] openURL:
[NSURL URLWithString:@"itms-apps://itunes.apple.com/WebObjects/
MZStore.woa/wa/viewContentsUserReviews?
type=Purple+Software&id=APPId"]];

更改状态栏的颜色

- (void)setStatusBarBackgroundColor:(UIColor *)color {
    UIView *statusBar = [[[UIApplication sharedApplication] valueForKey:@"statusBarWindow"] valueForKey:@"statusBar"];

    if ([statusBar respondsToSelector:@selector(setBackgroundColor:)]) {
        statusBar.backgroundColor = color;
    }
}

修改UITextField中Placeholder的文字颜色

[textField setValue:[UIColor redColor] forKeyPath:@"_placeholderLabel.textColor"];

获取手机安装的应用

Class c =NSClassFromString(@"LSApplicationWorkspace");
    id s = [(id)c performSelector:NSSelectorFromString(@"defaultWorkspace")];
    NSArray *array = [s performSelector:NSSelectorFromString(@"allInstalledApplications")];
    for (id item in array) {
        NSLog(@"%@",[item performSelector:NSSelectorFromString(@"applicationIdentifier")]);
        NSLog(@"%@",[item performSelector:NSSelectorFromString(@"bundleIdentifier")]);
        NSLog(@"%@",[item performSelector:NSSelectorFromString(@"bundleVersion")]);
        NSLog(@"%@",[item performSelector:NSSelectorFromString(@"shortVersionString")]);
    }

获取到webview的高度

CGFloat height = [[self.webView stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight"] floatValue];

设置navigationBar的title

//选择的颜色
UIColor * color = [UIColor whiteColor];

NSDictionary * dict = [NSDictionary dictionaryWithObject:color forKey:UITextAttributeTextColor];

//设置
self.navigationBar.titleTextAttributes = dict;

常用工具

这里写图片描述

视图透明，而子视图不透明

[[UIColor blackColor] colorWithAlphaComponent:0.6]]

监听数组变化

@property (nonatomic, strong) NSMutableArray *cellList;

- (NSMutableArray *)cellListWrapper {
    return [self mutableArrayValueForKey:@"cellList"];
}

等宽字体,可用于数组对齐和时间显示等

下列几种字体是 iPhone 上的设备字体：
• Serif：Times New Roman、 Georgia 和 _serif
• Sans-serif：Helvetica、 Arial、 Verdana、 Trebuchet、 Tahoma 和 _sans
• 等宽字体：Courier New、 Courier 和 _typewriter、Helvetica Neue