iphone-sdk-3.0

问题 i have a webveiw where i can show small html value but i have a issue if is do this NSString *HTMLData =@"<h3><span style=font-family:Helvetica-Bold > <strong> Information</strong> </span></h3>"; HTMLData= [HTMLData stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]; [web loadHTMLString:HTMLData baseURL:nil]; then its wokring fine but if my NSString has a break line lets say NSString *HTMLData =@"<h3><span style=font-family:Helvetica-Bold > <strong> Information</strong>

问题 I am using UIWebView to display pdf. I wanna handle touch events on webview. There are two conditions, my WebView should handle double touch events and gestures, and i wanna pass single tap/touch events to super view. Can any one please tell me how to differentiate the touch events in UIWebView and how to pass specific touch events to its super view? to get the touch events i am subclassing the uiwebview and im overriding the hitTest method in subclass. 回答1: If that post is not answering your

问题 In the simulator, I don't have this problem but when I run the app on my device applicationDidBecomeActive and applicationWillTerminate aren't called. Is it because I'm jailbroken and running backgrounder etc? Here's the gdb log from Xcode: [Session started at 2010-02-28 15:37:00 +0900.] GNU gdb 6.3.50-20050815 (Apple version gdb-1460) (Fri Feb 5 06:29:49 UTC 2010) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are

问题 Lots of information on NSDates about the place, but I haven't found a clear solution to this. I have a list of Event entities, each with potentially many EventSessionTime s. Event <--->> EventSessionTime In 1 table view I want to display a unique list of days that have Events , in another table view I want to show the events on a particular day (ordered by time). To achieve this I currently have 2 NSDates - a day and time - and some overly complicated searching/sorting. I want to remove this

问题 In a multi-view application, do you think its better to let views automatically get unloaded in memory tight situations, or to actually only ever have one View Controller allocated at a time, and when you switch views, the new one is created, the old one removed, the new one adde d and the old one released. Deallocating every time also means that there is a slight delay when switching to a new tab (very slight). So What do you think? Also, I'm a bit confused about how and when and where and

问题 Where can I find a list of transitions for bringing a new Viewcontroller onto the stack. My line of code is: [peoplePicker pushViewController:myDetail transition:6]; after selecting a contact. Where can I find a list of transitions, and why does "6" work correctly? Also I get a warning with this code saying it may not respond to transition, even though it produces the transition correctly. What is the proper way to do these animations? Thanks, 回答1: That method is a private method that isn't

问题 I am writing a program to grab picture from the Photo Album on the device and automatically send it as attachment to an email address. I want to do this without displaying the MFMailComposeViewController UI (the typical iphone send email compose Window). Is this possible? thanks much in advance. 回答1: It's better include the image as an attachment and show the compose controller. It also lets the user have the final decision who and what to send. But you can always construct an SMTP message.

问题 Currently I have an entity named "Events" in a CoreData app. "Events" has one string property named "eventName". In the -(void)viewDidLoad I am trying to Fetch all the "Events" objects and load their "eventName" by alphabetical order into a UIPickerView. The ultimate end goal is through the use of a textField, buttons and the pickerView being add new objects in and remove unwanted objects out. Basically turning the UIPickerView into a UITableView. Currently I am able to save objects to the

问题 First of all I began with the code below in my view controller but for reasons that work for me I needed the below code to be in a separate class. So I created a CustomView class which I've posted below. At this point is it possible for me to create an instance of this class in my view controller, create an IBOutlet and connect it to a UIScrollView (or some kind of view) in interface builder and get the same kind of behavior, and how would I do something like that? customView.m #import <UIKit

问题 I have a situation where I would like to pop up an alert view, but the event that shows the alert view could occur as often as every 5 seconds. I'd rather not have a stack of alert views for the user to click OK on so I was wondering. How do you check if a UIAlertView is currently showing? 回答1: You could retain a reference to it or you could set a flag in your alert delegate. When you open the alert set the flag to true and when the alert calls its dismissal delegate function flip it to false