IOS 代码片段

一些代码片段


1. 16进制颜色值的转换
#define
UIColorFromRGB(rgbValue) [UIColor colorWithRed:((float)((rgbValue &
0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00)
>> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]


2.md5

+ (NSString*)md5:(NSString*)str
{
constchar*cStr = [str UTF8String];
unsignedcharresult[16];
CC_MD5(cStr, strlen(cStr), result);
return[NSStringstringWithFormat:@"XXXXXXXXXXXXXXXX",
result[0], result[1], result[2], result[3],
result[4], result[5], result[6], result[7],
result[8], result[9], result[10], result[11],
result[12], result[13], result[14], result[15]
];
}


3.调用

//1、调用 自带mail

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"mailto://[e-mail]"]];



//2、调用 电话phone

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"tel://8008808888"]];



//3、调用 SMS

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"sms://800888"]];



//4、调用自带 浏览器 safari

[[UIApplicationsharedApplication]openURL:[NSURLURLWithString:@"http://www.hzlzh.com"]];



//调用phone可以传递号码，调用SMS 只能设定号码，不能初始化SMS内容。


4.计算2个经纬度之间距离

+(double)distanceBetweenOrderBy:(double)lat1:(double)lat2:(double)lng1:(double)lng2{
CLLocation* curLocation = [[CLLocationalloc]initWithLatitude:lat1longitude:lng1];
CLLocation* otherLocation = [[CLLocationalloc]initWithLatitude:lat2longitude:lng2];
doubledistance = [curLocation distanceFromLocation:otherLocation];
returndistance;
}



5.输入框中是否有个叉号，在什么时候显示，用于一次性删除输入框中的内容
text.clearButtonMode=UITextFieldViewModeAlways;







6.iOS本地推送

第一步：创建本地推送
// 创建一个本地推送
UILocalNotification*notification = [[[UILocalNotificationalloc]init]autorelease];
//设置10秒之后
NSDate*pushDate = [NSDatedateWithTimeIntervalSinceNow:10];
if(notification != nil) {
// 设置推送时间
notification.fireDate= pushDate;
// 设置时区
notification.timeZone= [NSTimeZonedefaultTimeZone];
// 设置重复间隔
notification.repeatInterval= kCFCalendarUnitDay;
// 推送声音
notification.soundName= UILocalNotificationDefaultSoundName;
// 推送内容
notification.alertBody= @"推送内容";
//显示在icon上的红色圈中的数子
notification.applicationIconBadgeNumber= 1;
//设置userinfo 方便在之后需要撤销的时候使用
NSDictionary*info = [NSDictionarydictionaryWithObject:@"name"forKey:@"key"];
notification.userInfo= info;
//添加推送到UIApplication
UIApplication*app = [UIApplicationsharedApplication];
[appscheduleLocalNotification:notification];

}

第二步：接收本地推送
- (void)application:(UIApplication*)application didReceiveLocalNotification:(UILocalNotification*)notification{
UIAlertView*alert = [[UIAlertViewalloc]initWithTitle:@"iWeibo"message:notification.alertBodydelegate:nilcancelButtonTitle:@"确定"otherButtonTitles:nil];
[alertshow];
// 图标上的数字减1
application.applicationIconBadgeNumber-= 1;
}

第三步：解除本地推送
// 获得 UIApplication
UIApplication*app = [UIApplicationsharedApplication];
//获取本地推送数组
NSArray*localArray = [app scheduledLocalNotifications];
//声明本地通知对象
UILocalNotification*localNotification;
if(localArray) {
for(UILocalNotification*noti inlocalArray) {
NSDictionary*dict = noti.userInfo;
if(dict) {
NSString*inKey = [dict objectForKey:@"key"];
if([inKey isEqualToString:@"对应的key值"]) {
if(localNotification){
[localNotificationrelease];
localNotification = nil;
}
localNotification = [noti retain];
break;
}
}
}

//判断是否找到已经存在的相同key的推送
if(!localNotification) {
//不存在初始化
localNotification = [[UILocalNotificationalloc]init];
}

if(localNotification) {
//不推送 取消推送
[appcancelLocalNotification:localNotification];
[localNotificationrelease];
return;
}
}



7.点击链接直接跳转到 App Store 指定应用下载页面


//跳转到应用页面
NSString*str = [NSStringstringWithFormat:@"http://itunes.apple.com/us/app/id%d",appid];
[[UIApplicationsharedApplication]openURL:[NSURLurlWithString:str]];

//跳转到评价页面
NSString*str = [NSStringstringWithFormat:@"itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id;=%d",
appid ];
[[UIApplicationsharedApplication]openURL:[NSURLurlWithString:str]];


8.父级view 不响应touch事件 子view相应事件

-(id)hitTest:(CGPoint)pointwithEvent:(UIEvent*)event {
idhitView = [superhitTest:pointwithEvent:event];
if(hitView == self)returnnil;
elsereturn hitView;
}



9.给视图加上倒影效果

constCGFloat kReflectPercent = -0.25f;
constCGFloat kReflectOpacity = 0.3f;
constCGFloat kReflectDistance = 10.0f;
+ (void)addSimpleReflectionToView: (UIView*) theView
{
CALayer*reflectionLayer = [CALayerlayer];
reflectionLayer.contents= [theView layer].contents;
reflectionLayer.opacity= kReflectOpacity;
reflectionLayer.frame= CGRectMake(0.0f,0.0f,
theView.frame.size.width,
theView.frame.size.height* kReflectPercent);
CATransform3Dstransform = CATransform3DMakeScale(1.0f, -1.0f,1.0f);
CATransform3Dtransform = CATransform3DTranslate(stransform,0.0f,
-(kReflectDistance + theView.frame.size.height),0.0f);
reflectionLayer.transform= transform;
reflectionLayer.sublayerTransform= reflectionLayer.transform;
[[theViewlayer]addSublayer:reflectionLayer];
}