I have create a class Box which is a subclass of UIImageView.
In my program, I want to make the Box to be the only draggable object in the main view controller.
Here is my code:
BoxViewController.m
-(void) viewDidLoad{
[super viewDidLoad];
target = [[Box alloc] initWithFrame:CGRectMake(10,10,100,100)];
[self.view addSubView:target];
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [[event allTouches] anyObject];
if([touch view] == target){
CGPoint location = [touch locationInView:self.view];
target.center = location;
}
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
[self touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event];
}
I think the condition is not working, but I have tried isKindOfClass. Both didn't work. What is the solution? Thank you very much.
try this method
(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
CGPoint location = [[touches anyObject] locationInView:self.view];
target.transform = CGAffineTransformMakeTranslation(location.x, location.y);
}
Related
I am moving around some UIImageview with UITouch.
I want to play a sound when the image are inside a specific area. What is the easiest way to do that?
Thanks for any answer.
// ViewController.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize imageView1,imageView2;
- (void)viewDidLoad {
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [[event allTouches] anyObject];
CGPoint touchLocation = [touch locationInView:self.view];
if ([touch view] == imageView1) {
imageView1.center = touchLocation;
}
else if ([touch view] == imageView2) {
imageView2.center = touchLocation;
}
}
#end
// ViewController.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController{
UIImageView *imageView1;
UIImageView *imageView2;
}
#property(nonatomic,retain) IBOutlet UIImageView *imageView1;
#property(nonatomic,retain) IBOutlet UIImageView *imageView2;
#end
I solved it like this:
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [[event allTouches] anyObject];
CGPoint touchLocation = [touch locationInView:self.view];
NSLog(#"%#", NSStringFromCGPoint(touchLocation));
[self.view bringSubviewToFront:imageView1];
if ([touch view] == imageView1) {
imageView1.tag=0;
if ((touchLocation.x >= 340 && touchLocation.x <= 420) && (touchLocation.y >= 185 && touchLocation.y <= 265)) {
NSLog(#"head");
[UIView animateWithDuration:0.35
delay:0.0
options: UIViewAnimationOptionAllowAnimatedContent
animations:^{
imageView1.frame = CGRectMake(380.0-43, 225.0-54, 90.0, 108.0);
imageView1.tag=1;
}
completion:^(BOOL finished){
NSLog(#"Auto justerad!");
}];
}
}
}
I was able to draw with UIBezierPath in my app. Now I added a UIColor variable so the user, pushing a button, can select a different color. When the user change the color and he start drawing with the new color, all the paths already drawn have the new color.
How can I tell the object to not change the color of the already drawn paths?
Here is my code. Any example of code is much appreciated! :)
(I have my UIColor variable storaged in the appDelegate and I am calling the refresh method from another viewControlle.
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
AppDelegate *app = (AppDelegate *)[[UIApplication sharedApplication] delegate];
self.backgroundColor = [UIColor whiteColor];
myPath = [[UIBezierPath alloc] init];
myPath.lineCapStyle = kCGLineCapRound;
myPath.miterLimit = 0;
myPath.lineWidth = 5;
brushPattern = app.currentColor;
}
return self;
}
-(void)refresh {
AppDelegate *app = (AppDelegate *)[[UIApplication sharedApplication] delegate];
brushPattern = app.currentColor;
}
- (void)drawRect:(CGRect)rect {
[brushPattern setStroke];
for (UIBezierPath *_path in pathArray)
[_path strokeWithBlendMode:kCGBlendModeNormal alpha:1.0];
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
myPath = [[UIBezierPath alloc] init];
myPath.lineWidth = 5;
UITouch *mytouch = [[touches allObjects] objectAtIndex:0];
[myPath moveToPoint:[mytouch locationInView:self]];
[pathArray addObject:myPath];
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *mytouch = [[touches allObjects] objectAtIndex:0];
[myPath addLineToPoint:[mytouch locationInView:self]];
[self setNeedsDisplay];
}
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
}
I found one demo code for that..
Please check this if it will be helpful to you..
Smooth Line link
I have a Menu ("myMenu") containing CCMenuItemImages. I would like this menu to detect finger swipes and slide accordingly.
My problem is that the CCMenuItemImages seem to absorb the touch event. The swipe works fine when the user touches the menu outside of the CCMenuItemImages, but not when the touch happens on these.
I have tried to put my menu items in a layer to detect touches (refering to answer Scrollable menu using MenuItem's), but this doesn't seem to work either. Any idea why ?
+(id) scene
{
CCScene *scene = [CCScene node];
ModeMenuScene *layer = [ModeMenuScene node];
[scene addChild: layer];
return scene;
}
-(id) init
{
if( (self=[super init] )) {
CGSize winSize = [[CCDirector sharedDirector] winSize];
CCSprite *background = [CCSprite spriteWithFile:#"bg.png"];
background.position=ccp(winSize.width/2,winSize.height/2);
[self addChild:background];
mode1 = [CCMenuItemImage itemFromNormalImage:#"Mode1.png" selectedImage: #"Mode1.png" target:self selector:#selector(goToMode1:)];
mode1label = [CCLabelTTF labelWithString:[NSString stringWithFormat:#"Level 1 %d", n] dimensions:CGSizeMake(220,53) alignment:UITextAlignmentCenter fontName:#"Arial" fontSize:20.0];
mode1label.color = ccc3(167,0,0);
mode1label.position=ccp(55,-30);
[mode1 addChild:mode1label];
// here same kind of code to define mode2,mode3,mode4 (taken out to reduce size of code)
myMenu=[CCMenu menuWithItems:mode1,mode2,mode3,mode4,nil];
[myMenu alignItemsHorizontallyWithPadding:25];
myMenu.position=ccp(winSize.width/2+40,180);
menuLayer = [CCLayer node];
[menuLayer addChild:myMenu];
[self addChild:menuLayer];
[self enableTouch];
}
return self;
}
-(void) disableTouch{
self.isTouchEnabled=NO;
menuLayer.isTouchEnabled=NO;
}
-(void) enableTouch{
self.isTouchEnabled=YES;
menuLayer.isTouchEnabled=YES;
}
-(void) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInView:[touch view]];
if(location.y>100 && location.y<260) {
draggingMenu=1;
x_initial = location.x;
}
else draggingMenu=0;
}
-(void) ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
UITouch *touch = [touches anyObject];
CGPoint location = [touch locationInView:[touch view]];
if(draggingMenu==1) {
CGSize winSize = [[CCDirector sharedDirector] winSize];
int x = myMenu.position.x+location.x-x_initial;
x = MAX(0,x);
x = MIN(x,winSize.width/2+40);
myMenu.position=ccp(x,180);
x_initial=location.x;
}
}
- (void) ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
draggingMenu=0;
}
- (void)dealloc {
[super dealloc];
}
#end
Solved it by adding :
-(void) registerWithTouchDispatcher
{
[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:INT_MIN+1 swallowsTouches:NO];
}
the problem was that CCMenuItemImage swallows the touches and has a high priority set at -128. Thus the need to set priority at INT_MIN+1
When I touch anywhere on screen touchesBegan event triggered. but I couldn't manage how if I touch specific object as like UIImageView?
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [[event allTouches] anyObject];
CGPoint location = [touch locationInView: touch.view];
imageView.center = location;
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
[self touchesBegan:touches withEvent:event];
}
Ok, found the solution, here is the code:
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [[event allTouches] anyObject];
if ([touch view] == imageView) {
CGPoint location = [touch locationInView: self.view];
imageView.center = location;
}
}
HI
How to get the x& y value from the touchesbegan to our method,i have made the sample like this to get the location of my TextField,and this location was taken in another method to calculate the location of the text and add text to the UIImage,im facing problem in this final stage to pass this parameter to the CGContextShowTextAtPoint,
this is my code.
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
NSUInteger tapCount = [touch tapCount];
CGPoint location = [touch locationInView:touch.view];
textBox.center = location;
NSLog(#"location-%f,%f", location.x,location.y);
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
NSLog(#"touches moved");
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
NSLog(#"touches ended");
}
i need the value of the location.x,location.y,get passed to another method.so that i can fix the location of the text,
can any one help me in this...
Thanks in advance