Tweet In the old days of iOS when you pressed the home button the application you where running in your iphone used to quit instantly. Today with iOS 4 you have a few more options. Multitasking is the most relevant feature included in iOS 4. If you build an application on Xcode against iOS 4 [...]
The Event Kit Framework is the way apple wants us to display or create a calendar entry. With this they are not trying to replace the calendar app, they are trying to give us a way to, for instance, create an appointment from our app and add it to the calendar app.
The image picker is a controller that allows you to select an image from a thumbnail list or take it with the camera and then grab that selection and do whatever you want with it.
To publish your app to the app store it needs to have an icon, and it can not be the white one that you see by default in the simulator.
It might not look like so, but your iPhone does have a file system, the thing is that is not the kind of file system that we are used to. To save your data you will only have a directory and you won’t be able to choose it.
Yes, your iPhone has an accelerometer. I know this is not a physics class but the best way to define it is saying that it is a device to detect the magnitude and direction of acceleration. iDevices uses it to detect rotation, shake gestures, among others.
Now that we know how to create a table views, we are going to use that knowledge to create a new project using a navigation controller to see a more detailed view of the tittle in the cell of the table view.
Table views are probably the most common control in iPhone apps. If you have used the Messages app, Mail app, Twitter app, between many others, then you know what i’m talking about. You may have seen them with just text, with a tittle and a description, with an image but they are all table views.
Memory is probably the most boring part of iPhone development, but also one of the most important. Depending on the iPhone you have you will have available more or less than 256MB’s (iPhone 3GS), where part of that is shared with the OS, leaving you less than 128MB’s, so you have to be very careful managing memory or Apple may reject your app.
Learn how to make iPhone/iPod-Touch applications using the iPhone SDK. We’ll make many applications to illustrate basic iPhone development workflows and coding techniques that are fundamental for your formation as an iPhone Developer.