First Interface Builder:

Click on your view object and make sure that you have the Utilities View open. Then click on the Attributes Inspector on the right. You should see a section for view and in that [...] Read more]]> There are two ways to change the background color of a view, in code and through interface builder. I thought it would be helpful to go through both these options real quick.

First Interface Builder:

Click on your view object and make sure that you have the Utilities View open. Then click on the Attributes Inspector on the right. You should see a section for view and in that section there is an option for background color. Change that to something that stands out. I chose green:

Next in Code:

Inside your ViewController.m file find the function viewDidLoad. You will want to add the following code:

[self.view setBackgroundColor:[UIColor redColor]];

This is assuming that you are using a view controller.

Let me know if there are any other iPhone development tutorial videos you would like to see. Or anything on Objective C.

Let me know if there are any other iPhone development tutorial videos you would like to see. Or anything on Objective C.

For starters here are some basics-

1. ⌘R – Run 2. ⌘B – Build 3. ⌘S – Save 4. ⌘Y – Activate Breakpoints 5. ⌘\ – Add Breakpoint on this [...] Read more]]> I wanted to give you some quick shortcuts for XCode that might be helpful. I find that when I take the time to learn hot keys they help speed up my development time and get me comfortable with the software that I am using.

For starters here are some basics-

1. ⌘R – Run
2. ⌘B – Build
3. ⌘S – Save
4. ⌘Y – Activate Breakpoints
5. ⌘\ – Add Breakpoint on this line
6. Tab – accepts the current autocomplete
7. Double click on bracket – gives matching bracket
8. ⌘- double click – shows you the definition of the symbol
9. ⌘Z – Undo
10. Shift-⌘-Z – Redo
11. ⌘] – Shift Right
12. ⌘[ – Shift left
13. ⌘/ – Comments out the current line
14. ^⌘D – jumps to the definition of the variable
15. ⌘Q – quits useful when you are done or want to exit the simulator

I hope some of these will get you started towards being a more effective developer.

Then I am going to call mine MyNewTabApp, but feel free to name yours whatever is the most appropriate for you.

Now for this tutorial I am going to use Interface builder a little bit. Click [...] Read more]]> Now that we have created a simple window base application we will move on to create a simple Tab Bar Application. To start with open XCode again and create a Tab Bar Application like below:

Then I am going to call mine MyNewTabApp, but feel free to name yours whatever is the most appropriate for you.

Now for this tutorial I am going to use Interface builder a little bit. Click on the MainWindow.xib file. it should look like this afterwards:

If it might look like this:

If this is the case I recommend pulling the small vertical bar on the left of the graph paper to the right until it looks like the first picture. Ok, now that we XCode looking the way we want lets dive into creating the Tab Application. If we build and run the app is it is created for us, we have two tabs and views that are associated with them. The tabs say First View and Second View and you can toggle between them by pressing the tabs at the bottom.

Now if our goal is to create a simple application that has four pages we will need to add two more pages to our app. To start this control click on the MyNewTabApp folder in the file view. Then click “New File…” choose the UIViewController subclass option and click next.

Make sure that the “With XIB for user interface has been chosen” and click next.

I usually put in ThirdViewController as the name especially when creating very simple applications, but feel free to use whatever name you want. Then choose save. Make sure to repeat these steps again for the fourth tab. Now that we have all the view created lets add some stuff to views three and four so we know they are displaying. For view three we will add a Label. Click on the Third View’s xib file and then the view object. Open the Utilities view by clicking on the third View option in the top right of XCode. This will open all the utilities on the right of the IDE. Go down to the objects on the bottom right and drag the label object over to the view. You can make the label say whatever you want. It should look like this:

For view four we are going to change the background color. To do this click on the Fourth View’s xib file. Then click on the View object. Next make sure that you have the Utilities View open and click on the Attributes Inspector on the right. You should see a section for view and in that section there is an option for background color. Change that to something that stands out. I chose green:

Now go back to the Mainwindow.xib file we are ready to link our Tab Bar Controller with the two new View Controller. Go down to the objects in the bottom right hand corner:

Drag the View Controller object over from the bottom right to the Tab Bar Controller and place it after the second View Controller. Then bring a Tab Bar Item and place it underneath the View Controller Object you just brought over so it looks like this:

Now we are ready to link this item with your view. Click on the third View Controller and then click the Identity Inspector on the right. After this load you can choose from the drop down in the Custom Class section the class you used for the third view. Repeat these steps for the fourth view as well. Then Save, Build and Run. The third tab should look like this:

The fourth tab should be nice and green or whatever color you used like this:

If you want you can edit the names that show up on the tab items by double clicking on them. You can also click on the attributes inspector and the editing the Title text field under bar Item.

Let me know if there are any other iPhone development tutorial videos you would like to see. Or anything on Objective C.

You will also notice that as you create more and more applications you will need to get rid of old instances of [...] Read more]]> When you get started developing you will notice that you can use different simulator for different versions of the iPhone and iPad. These can be found in the top left right next to the “Run” and “Stop” buttons. In the drop down you will see something like this:

You will also notice that as you create more and more applications you will need to get rid of old instances of apps from your simulator. To do this you need to Run your simulator and then click on the file option “iOS Simulator”. This will produce the following:

from here you just real quick press “Reset Content and Settings” then press reset. You should be taken back to the basic setting of your iphone. Run your app again to notice that other icons have disappeared and your app will have lost the saved settings you might have had.