ios一些开发中遇到的小知识点

界面重下到上弹出，

弹出方法

addResumes为要弹出的画面对象

 addResumes=[[AddResumes alloc]initWithNibName:@"AddResumes" bundle:nil];     

   // [self.navigationController pushViewController:addResumes animated:YES];

    nav=[[UINavigationController alloc]initWithRootViewController:addResumes];

    [self.navigationController presentModalViewController:nav animated:YES];

返回时调用方法

[self.navigationController dismissModalViewControllerAnimated:YES];

这一对方法是将控制权转交给下个navigationcontroller控制，和左右不一样，左右是将目前界面往堆栈里面压，将新的界面添加进来

左右对应的方法为

[self.navigationController pushViewController:resumeDetail animated:YES];

[self.navigationController popViewControllerAnimated:YES];

更多此类方法看api。

自定义navigation 按钮方法

   UIBarButtonItem *rightbuttonitem=[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"nav_btn_email.png"]

                                                                                         style:UIBarButtonItemStylePlain

                                                                                        target:self

                                                                                        action:@selector(mailway)];

    self.navigationItem.rightBarButtonItem=rightbuttonitem;

修改navigationtitle字体什么的，添加视图，想怎么改怎么改

  UILabel *navtitle=[[UILabel alloc]init];

    [navtitle setFont:[UIFont fontWithName:@"TimesNewRomanPS-BoldMT" size:20]];

    [navtitle setText:@"Objective"];

    navtitle.textColor=[UIColor whiteColor];

    [navtitle setFrame:CGRectMake( -70, -13, 140, 25)];

    navtitle.textAlignment=UITextAlignmentCenter;

    [navtitle setBackgroundColor:[UIColor clearColor]];

    navtitle.shadowColor=[UIColor darkGrayColor];

    [navtitle setShadowOffset:CGSizeMake(-0.5, -1)];

    UIView *myview=[[UIView alloc]init];

    [myview addSubview:navtitle];

    [navtitle release];

    [self.navigationItem setTitleView:myview];

    [myview release];