Add delegate callback

Example/ISEmojiViewSample/ViewController.m

@@ -9,7 +9,9 @@
 #import "ViewController.h"
 #import "ISEmojiView.h"
 
-@interface ViewController ()
+@interface ViewController ()<ISEmojiViewDelegate>
+
+@property (nonatomic, strong) UITextView *textView;
 
 @end
 
@@ -19,18 +21,23 @@
     [super viewDidLoad];
     
     // init TextView
-    UITextView *textView = [[UITextView alloc] initWithFrame:self.view.frame];
-    [self.view addSubview:textView];
+    self.textView = [[UITextView alloc] initWithFrame:self.view.frame];
+    [self.view addSubview:self.textView];
     
     // init ISEmojiView
     ISEmojiView *emojiView = [[ISEmojiView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 216)];
-    textView.inputView = emojiView;
+    emojiView.delegate = self;
+    self.textView.inputView = emojiView;
     
-    [textView becomeFirstResponder];
+    [self.textView becomeFirstResponder];
 }
 
 - (void)didReceiveMemoryWarning {
     [super didReceiveMemoryWarning];
 }
 
+-(void)emojiView:(ISEmojiView *)emojiView didSelectEmoji:(NSString *)emoji{
+    self.textView.text = [self.textView.text stringByAppendingString:emoji];
+}
+
 @end

ISEmojiView/ISEmojiView.h

@@ -8,6 +8,16 @@
 
 #import <UIKit/UIKit.h>
 
+@protocol ISEmojiViewDelegate;
+
 @interface ISEmojiView : UIView
 
+@property (nonatomic, assign) id<ISEmojiViewDelegate> delegate;
+
 @end
+
+@protocol ISEmojiViewDelegate <NSObject>
+
+-(void)emojiView:(ISEmojiView *)emojiView didSelectEmoji:(NSString *)emoji;
+
+@end

ISEmojiView/ISEmojiView.m

@@ -55,10 +55,12 @@ static const CGFloat EmojiFontSize = 32;
             
             NSString *emoji = self.emojis[i];
             
+            // init Emoji Button
             UIButton *emojiButton = [UIButton buttonWithType:UIButtonTypeCustom];
             emojiButton.titleLabel.font = [UIFont fontWithName:@"Apple color emoji" size:EmojiFontSize];
             [emojiButton setTitle:emoji forState:UIControlStateNormal];
-
+            [emojiButton addTarget:self action:@selector(emojiButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
+            
             // Pagination
             if (i % (rowNum * colNum) == 0) {
                 page ++;    // Increase the number of pages
@@ -111,4 +113,10 @@ static const CGFloat EmojiFontSize = 32;
     self.pageControl.currentPage = newPageNumber;
 }
 
+- (void)emojiButtonPressed:(UIButton *)button {
+    if ([self.delegate respondsToSelector:@selector(emojiView:didSelectEmoji:)]) {
+        [self.delegate emojiView:self didSelectEmoji:button.titleLabel.text];
+    }
+}
+
 @end