この絵はな〜んだ？ぶら下がっている「ひらがな」のはたからえらんでみよう。というかんじで、ひらがなお勉強iPhoneアプリのサンプルコードを描いてみます。
今回使った画像
サンプルを動画でみる
サンプルコード
#import “ViewController.h”
@interface Question : NSObject
@property int no;
@property (readonly) NSString *word;
@property (readonly) NSString *imageName;
-(void)update;
@end
@implementation Question
– (void)update
{
self.no = arc4random() % 3;
}
– (NSString *)word
{
NSString *str;
switch (self.no) {
case 0: str = @”くるま“; break;
case 1: str = @”ぶた“; break;
case 2: str = @”かめ“; break;
default: break;
}
return str;
}
– (NSString *)imageName
{
NSString *str;
switch (self.no) {
case 0: str = @”car”; break;
case 1: str = @”pig”; break;
case 2: str = @”tortoise”; break;
default: break;
}
return str;
}
@end
@interface ViewController ()
@property (strong, nonatomic) Question *question;
@property (weak, nonatomic) UIImageView *questBoard;
@end
@implementation ViewController
– (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [self color:4];
[self updateQuestion];
[self updateAnswerBox];
[self createFlag];
}
– (UIImageView *)questBoard
{
UIImageView *iv = [[UIImageView alloc] initWithFrame:CGRectMake(50, 200, 220, 160)];
iv.backgroundColor = [self color:3];
iv.contentMode = UIViewContentModeScaleAspectFit;
iv.layer.cornerRadius = 10;
[self.view addSubview:iv];
self.questBoard = iv;
return iv;
}
– (void)updateQuestion
{
if (!self.question) {
self.question = [[Question alloc] init];
}
[self.question update];
UIImage *img = [UIImage imageNamed:self.question.imageName];
self.questBoard.image = img;
}
– (void)updateAnswerBox
{
UIBezierPath *triangle = [UIBezierPath bezierPath];
[triangle moveToPoint:CGPointMake(0, 0)];
[triangle addLineToPoint:CGPointMake(50, 0)];
[triangle addLineToPoint:CGPointMake(25, 70)];
for (int i=0; i<[self.question.word length]; i++) {
float x = 50 * i + 100;
float y = 380;
UIView *ans = [[UIView alloc] initWithFrame:CGRectMake(x, y, 50, 70)];
ans.backgroundColor = [self color:1];
ans.tag = i + 1;
[self.view addSubview:ans];
CAShapeLayer *sl = [CAShapeLayer layer];
sl.path = triangle.CGPath;
sl.fillColor = [UIColor whiteColor].CGColor;
[ans.layer addSublayer:sl];
}
}
#define Hiragana @“あいうえおかきくけこさしすせそ“
– (void)createFlag
{
UIView *line = [[UIView alloc] initWithFrame:CGRectMake(0, 75, 320, 5)];
line.backgroundColor = [self color:3];
[self.view addSubview:line];
int flagCount = 5;
NSMutableArray *word = [[NSMutableArray alloc] init];
for (int i=0; i<flagCount; i++) {
if (i < self.question.word.length) {
[word addObject:[self.question.word substringWithRange:NSMakeRange(i, 1)]];
} else {
int n = arc4random() % [Hiragana length];
[word addObject:[Hiragana substringWithRange:NSMakeRange(n, 1)]];
}
}
[self shuffle:word];
UIBezierPath *triangle = [UIBezierPath bezierPath];
[triangle moveToPoint:CGPointMake(0, 0)];
[triangle addLineToPoint:CGPointMake(50, 0)];
[triangle addLineToPoint:CGPointMake(25, 70)];
for (int i=0; i<[word count]; i++) {
float x = 55 * i + 25;
float y = 80;
UILabel *flag = [[UILabel alloc] initWithFrame:CGRectMake(x, y, 50, 70)];
flag.backgroundColor = [self color:1];
NSMutableAttributedString *mstr = [[NSMutableAttributedString alloc] initWithString:[word objectAtIndex:i]];
NSMutableParagraphStyle *paragrapStyle = [[NSMutableParagraphStyle alloc] init];
paragrapStyle.alignment = NSTextAlignmentCenter;
paragrapStyle.lineHeightMultiple = 0.5;
[mstr addAttributes:@{
NSFontAttributeName : [UIFont boldSystemFontOfSize:30],
NSForegroundColorAttributeName : [self color:0],
NSStrokeWidthAttributeName : @-1,
NSStrokeColorAttributeName : [UIColor blackColor],
NSParagraphStyleAttributeName : paragrapStyle,
} range:NSMakeRange(0, 1)];
flag.attributedText = mstr;
[self.view addSubview:flag];
CAShapeLayer *sl = [CAShapeLayer layer];
sl.path = triangle.CGPath;
sl.fillColor = [UIColor blackColor].CGColor;
flag.layer.mask = sl;
flag.userInteractionEnabled = YES;
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];
[flag addGestureRecognizer:tap];
}
}
– (void)tap:(UITapGestureRecognizer*)sender
{
UILabel *l = (UILabel*)sender.view;
NSRange range = [self.question.word rangeOfString:l.text];
if (range.location != NSNotFound) {
UIView *box = [self.view viewWithTag:range.location + 1];
box.tag = 0;
[UIView animateWithDuration:0.5 animations:^{
l.center = box.center;
}];
} else {
[UIView animateWithDuration:0.5 animations:^{
l.center = CGPointMake(l.center.x, CGRectGetMaxY(self.view.frame) + 100);
}];
}
// clear check
BOOL clear = YES;
for (UIView *v in self.view.subviews) {
if (v.tag > 0) {
clear = NO;
}
}
if (clear) {
[self performSelector:@selector(nextQuestion) withObject:nil afterDelay:1.0];
}
}
– (void)nextQuestion
{
for (UIView *v in self.view.subviews) {
[v removeFromSuperview];
}
[self updateQuestion];
[self updateAnswerBox];
[self createFlag];
}
– (void)shuffle:(NSMutableArray*)arr
{
NSUInteger count = [arr count];
for (int i = 0; i < count; ++i) {
int nElements = count – i;
int n = (arc4random() % nElements) + i;
[arr exchangeObjectAtIndex:i withObjectAtIndex:n];
}
}
#define UIColorHex(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:0.8]
– (UIColor*)color:(int)i
{
switch (i) {
case 0:
return UIColorHex(0x35FF5C);
case 1:
return UIColorHex(0xB5E837);
case 2:
return UIColorHex(0xFFD72F);
case 3:
return UIColorHex(0xE89338);
case 4:
return UIColorHex(0xFF452C);
default:
break;
}
return nil;
}
– (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end