NavBar+TarBar
iphone开发 NavBar+TarBar
1 改变NavBar颜色:选中Navigation Bar 的Tint属性。选中颜色。
2 隐藏“back”按钮: self.navigationItem.hidesBackButton = YES;
3 隐藏"NavBar" : self.navigationController.navigationBarHidden = YES;
4 可以不用MainWindow.xib创建的Navigation。在每个view上自定义。
需要把每个控制页都加上以下代码来隐藏nav:
-(void)viewWillAppear:(BOOL)animated
{
self.navigationController.navigationBarHidden = YES;//显示"NavBar"
}
然后在每个控制页xib自己添加Navigation Bar。添加所需BarButtonItem按钮。
5 页面跳转隐藏tarbar :
HomeDetailViewController *detailview = [[HomeDetailViewController alloc] initWithNibName:@"HomeDetailView" bundle:nil];
detailview.hidesBottomBarWhenPushed = YES;//隐藏tarbar
[self.navigationController pushViewController:detailview animated:YES];
[detailview release];
6 页面返回:
[self.navigationController popViewControllerAnimated:YES];
7 默认选中tabbar为第一个view:
TabBarController.selectedIndex= 0;
其他:
8 已知两地经纬度 计算两地之间的距离:
// 地图显示当前位置:
mapView.showsUserLocation=YES;
CLLocationManager *locationManager = [[CLLocationManager alloc] init];//创建位置管理器
locationManager.delegate=self;//设置代理
locationManager.desiredAccuracy=kCLLocationAccuracyBest;//指定需要的精度级别为最佳精度
locationManager.distanceFilter=1000.0f;//设置距离筛选器为任何移动都要发送更新
[locationManager startUpdatingLocation];//启动位置管理器
MKCoordinateSpan theSpan;
//地图的范围 越小越精确
theSpan.latitudeDelta=0.05;
theSpan.longitudeDelta=0.05;
MKCoordinateRegion theRegion;
theRegion.center=[[locationManager location] coordinate];
theRegion.span=theSpan;
[mapView setRegion:theRegion];
[locationManager release];
MKUserLocation *usrLoc=mapView.userLocation;
CLLocationCoordinate2D usrCoordinate=usrLoc.location.coordinate;
NSLog(@"la==%f lo==%f",usrCoordinate.latitude,usrCoordinate.longitude);
// 已知两点的经纬度,计算出两地距离:
CLLocation *location1 = [[[CLLocation alloc] initWithLatitude:usrCoordinate.latitude longitude:usrCoordinate.longitude] autorelease];
CLLocation *location2 = [[[CLLocation alloc] initWithLatitude:36.676445 longitude:117.106793] autorelease];
NSLog(@"JULI====%.0f km", [location1 distanceFromLocation:location2]);//4502
9 取小数点后两位(四舍五入),输出:
NSLog(@"%.02f km",4478.442312);
10 调用打电话API :
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://10010"]];
使用这种方式拨打电话时,当用户结束通话后,iphone界面会停留在电话界面。
用如下方式,可以使得用户结束通话后自动返回到应用:
UIWebView*callWebview =[[UIWebView alloc] init];
NSURL *telURL =[NSURL URLWithString:@"tel:10086"];// 貌似tel:// 或者 tel: 都行
[callWebview loadRequest:[NSURLRequest requestWithURL:telURL]];
//记得添加到view上
[self.view addSubview:callWebview];
11 调用 SMS发短信:
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms://15315310992"]];
12 调用自带 浏览器 safari
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@http://www.baidu.com]];
13 在一个程序里打开另一个程序:
首先:plist里添加URL types 点开里边的Item0 添加URLSchemes 打开Item0 输入sinaWeibo
然后在需要调用的地方:[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sinaWeibo://*"]];
https://itunes.apple.com/cn/app/qq-2012/id444934666?mt=8
14 双引号转义:
用 \" 表示 双引号
15 设置按钮按下换图片 松开还是原图
// [danxuan setImage:[UIImage imageNamed:@"exercise_option_n.png"] forState:UIControlStateNormal];
//这个是设置按下的图片,松开就是上面的图片
// [danxuan setImage:[UIImage imageNamed:@"exercise_option_s.png"] forState:UIControlEventTouchDragOutside];
16 判断数组中是否存在某元素:
BOOL isValue=[keyArray containsObject:@"aaa"];
17 Nav添加button
UIButton *btnBack = [ABUtil createNavigationCtrollerRoundedRectBtn:Localized(@"取消")];
[btnBack addTarget:self
action:@selector(tapLeftBarButton)
forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:btnBack];
self.navigationItem.leftBarButtonItem = leftBarButtonItem;
[btnBack release];
[leftBarButtonItem release]