Implements an animation of a view moving from the top to the bottom and converts RGB values to colors

@ Interface timingcurveviewcontroller: uiviewcontroller {
Iboutlet uiimageview * basketball;
}

-(Void) touchesended :( nsset *) touches withevent :( uievent *) event {

[Uiview beginanimations: @ "movement" context: Nil];
[Uiview setanimationcurve: uiviewanimationcurveeasein]; // <label id = "code. timingcurve. easein"/>
[Uiview setanimationduration: 1.0f];
[Uiview setanimationrepeatcount: 3];
[Uiview setanimationrepeatautoreverses: Yes];
Cgpoint center = Basketball. Center;
If (center. Y> 85.0f ){
Center. Y-= 295.0f;
Basketball. Center = center;
} Else {
Center. Y + = 295.0f;
Basketball. Center = center;
}
[Uiview commitanimations];

}

-(Void) viewdidload {
[Super viewdidload];
Self. View. backgroundcolor = [self colorwithrgbhexstring: @ "# abcdef"];
}

-(Uicolor *) colorwithrgbhexstring :( nsstring *) rgbcolor {
Nsstring * cstring = rgbcolor;

// Remove spaces and uppercase nscharactersetwhitespaceandnewlinecharacterset

Cstring = [[cstring stringbytrimmingcharactersinset: [nscharacterset whitespaceandnewlinecharacterset] uppercasestring];

If ([cstring length] <6 ){

// Returns the default color.

Return [uicolor redcolor];

}

If ([cstring hasprefix: @ "0x"]) {

Cstring = [cstring substringfromindex: 2];

} Else if ([cstring hasprefix: @ "#"]) {

Cstring = [cstring substringfromindex: 1];

}

If ([cstring length]! = 6 ){

// Returns the default color.

Return [uicolor redcolor];

}

Nsange range;

Range. Length = 2;

Range. Location = 0;

Nsstring * rstring = [cstring substringwithrange: range];

Range. Location = 2;

Nsstring * gstring = [cstring substringwithrange: range];

Range. Location = 4;

Nsstring * bstring = [cstring substringwithrange: range];



Unsigned int R, G, B;

[[Ns1_scannerwithstring: rstring] scanhexint: & R];

[[Ns1_scannerwithstring: gstring] scanhexint: & G];

[[Ns1_scannerwithstring: bstring] scanhexint: & B];



Return [uicolor colorwithred :( float) r/255.0 green :( float) g/255.0 blue :( float) B/255.0 ALPHA: 1.0f];
}