Articles Tagged 'Apple iPhone'


Apple iPhone: Create a custom toggle button

non funzionano quando un UIButton è impostato in modalità UIButtonTypeCustom ! The states UIControlStateSelected or UIControlStateHighlighted do not work when a UIButton mode is set UIButtonTypeCustom ! Or rather, do not work (because reserved for other types of button), for example to create a button with two states: toggle note. If we have created two images (stato1.png and stato2.png) for our button, we can proceed as follows:

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/ / The header file that we create a global variable for usaremo
/ / Toggle the check was
BOOL toggleFlag;

Now we create our button:

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/ / We create a button and we place it initially in the state "stato1.png"
/ / Edit initWithFrame: (CGRect)} {100,100,50,50 with the position and
/ / Size of your image has
; toggleFlag = YES;
[ [ UIButton buttonWithType : UIButtonTypeCustom ] initWithFrame : ( CGRect ) { 100 , 100 , 50 , 50 } ] ; UIButton ToggleButton * = [[UIButton buttonWithType: UIButtonTypeCustom] initWithFrame: (CGRect) {100, 100, 50, 50}];
@ "" forState : UIControlStateNormal ] ; [ToggleButton setTitle: @ "" forState: UIControlStateNormal];
[ UIImage imageNamed : @ "stato1.png" ] forState : UIControlStateNormal ] ; [ToggleButton setBackgroundImage: [UIImage imageNamed: @ "stato1.png"] forState: UIControlStateNormal];
self action : @selector ( onToggle : ) forControlEvents : UIControlEventTouchUpInside ] ; [ToggleButton AddTarget: self action: @ selector (onToggle:) forControlEvents: UIControlEventTouchUpInside];
toggleButton ] ; [Self.view addSubview: ToggleButton];

When you click on the button will send a message to be managed onToggle :

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void ) onToggle : ( id ) sender { - (Void) onToggle: (id) sender {
/ / Retrieve pointer to UIButton
( UIButton * ) sender; UIButton ButtonClicked * = (UIButton *) sender;
/ / Executing the Toogle
toggleFlag =! toggleFlag;
[ UIImage imageNamed : ( toggleFlag ) ? @ "stato1.png" : @ "stato2.png" ] forState : UIControlStateNormal ] ; [ButtonClicked setBackgroundImage: [UIImage imageNamed: (toggleFlag)? @ "Stato1.png" @ "stato2.png"] forState: UIControlStateNormal];
}

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Very short snippet: streaming mp3 files to Apple iPhone

An alternative really easy to run a stream a mp3 file on the Apple iPhone could be:

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Very short snippet: Apple iPhone file system

Both the Mac OS X that the iPhone OS, we can access easily and directly to the directory - most important - the system which are:

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NSHomeDirectory Returns the path to the current user's home directory.
Returns the path to NSHomeDirectoryForUser Given a user's home directory.
NSTemporaryDirectory Returns the path of the temporary directory for the current user.

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