输入表情,删除逻辑

Author: 孟遥遥

.DS_Store

@@ -22,7 +22,8 @@ - (void)layoutSubviews
 
 @end
 
-static CGFloat sysKeyboardEndY = 0;
+//记录当前键盘的高度 ，键盘除了系统的键盘还有咱们自定义的键盘，互相来回切换
+static CGFloat keyboardHeight = 0;
 
 @interface ChatKeyboard ()<UITextViewDelegate,UIScrollViewDelegate>
  //表情
@@ -349,7 +350,8 @@ - (void)systemKeyboardWillShow:(NSNotification *)note
  [self reloadSwitchButtons];
  //获取系统键盘高度
  CGFloat systemKbHeight = [note.userInfo[@"UIKeyboardBoundsUserInfoKey"]CGRectValue].size.height;
- //记录Y值
+ //记录系统键盘高度
+ keyboardHeight = systemKbHeight;
  //将自定义键盘跟随位移
  [self customKeyboardMove:SCREEN_HEIGHT - systemKbHeight - Height(self.messageBar.frame)];
 }
@@ -390,6 +392,8 @@ - (void)switchFaceKeyboard:(UIButton *)swtFaceButton
  //重置其他按钮seleted
  self.audioButton.selected = NO;
  self.swtHandleButton.selected = NO;
+ //更新记录键盘高度
+ keyboardHeight = Height(self.keyBoardContainer.frame);
 
  if (swtFaceButton.selected) {
  _msgTextView.hidden = NO;
@@ -410,6 +414,8 @@ - (void)switchHandleKeyboard:(UIButton *)swtHandleButton
  //重置其他按钮selected
  self.audioButton.selected = NO;
  self.swtFaceButton.selected = NO;
+ //更新记录键盘高度
+ keyboardHeight = Height(self.keyBoardContainer.frame);
 
  if (swtHandleButton.selected) {
  _msgTextView.hidden = NO;
@@ -469,7 +475,8 @@ - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(N
  NSLog(@"-------old ---%@",change[@"old"]);
  if (change[@"new"] != change[@"old"]) {
  NSLog(@"高度变化");
- [self msgTextViewHeightFit];
+ //根据实时的键盘高度进行布局
+ [self msgTextViewHeightFit:keyboardHeight];
  }
 }
 
@@ -487,12 +494,12 @@ - (void)reloadSwitchButtons
 }
 
 #pragma mark - 输入框拉高
-- (void)msgTextViewHeightFit
+- (void)msgTextViewHeightFit:(CGFloat)currentKbHeight
 {
  self.messageBar.frame = Frame(0, 0, SCREEN_WITDTH, self.msgTextView.contentSize.height +MinY(self.msgTextView.frame)*2);
  self.msgTextView.frame = Frame(MinX(self.msgTextView.frame),(Height(self.messageBar.frame)-self.msgTextView.contentSize.height)*0.5, Width(self.msgTextView.frame), self.msgTextView.contentSize.height);
  self.keyBoardContainer.frame = Frame(0, MaxY(self.messageBar.frame), SCREEN_WITDTH, Height(self.keyBoardContainer.frame));
- self.frame = Frame(0,SCREEN_HEIGHT - Height(self.messageBar.frame) - Height(self.keyBoardContainer.frame)-49, SCREEN_WITDTH,Height(self.keyBoardContainer.frame) + Height(self.messageBar.frame));
+ self.frame = Frame(0,SCREEN_HEIGHT - currentKbHeight-Height(self.messageBar.frame), SCREEN_WITDTH,Height(self.keyBoardContainer.frame) + Height(self.messageBar.frame));
 }
 
 #pragma mark - 拍摄 , 照片 ,视频按钮点击
@@ -522,15 +529,50 @@ - (void)handleButtonClick:(ChatHandleButton *)button
 #pragma mark - 点击表情
 - (void)emotionClick:(UIButton *)emotionBtn
 {
+ 
  //获取点击的表情
  NSString *emotionKey = [NSString stringWithFormat:@"ChatEmotion_%li",emotionBtn.tag - 999];
  NSString *emotionName = [self.emotionDict objectForKey:emotionKey];
  //获取光标所在位置
  NSInteger location = self.msgTextView.selectedRange.location;
+ //变为可变字符串
  NSMutableString *txtStrM = [[NSMutableString alloc]initWithString:self.msgTextView.text];
- [txtStrM insertString:emotionName atIndex:location];
- self.msgTextView.text = txtStrM;
- NSLog(@"--------当前点击了表情 : ------------------%@",emotionName);
+ 
+ //判断是删除 ， 还是点击了正常的emotion表情
+ if ([emotionName isEqualToString:@"[del_]"]) {
+ 
+ if (!txtStrM.length) return;
+ 
+ //正则检测是否存在表情
+ NSRegularExpression *pression = [NSRegularExpression regularExpressionWithPattern:@"\\[[^\\[\\]]*\\]" options:NSRegularExpressionCaseInsensitive error:NULL];
+ NSArray *results = [pression matchesInString:self.msgTextView.text options:NSMatchingReportProgress range:NSMakeRange(0, self.msgTextView.text.length)];
+ //检测光标前是否有表情
+ __block BOOL deleteEmotion = NO;
+ [results enumerateObjectsUsingBlock:^(NSTextCheckingResult *_Nonnull checkResult, NSUInteger idx, BOOL * _Nonnull stop) {
+ //光标前面有表情
+ if (checkResult.range.location + checkResult.range.length == location) {
+ 
+ NSLog(@"-------光标前是表情------------");
+ [txtStrM replaceCharactersInRange:checkResult.range withString:@""];
+ self.msgTextView.text = txtStrM;
+ deleteEmotion = YES;
+ *stop = YES;
+ }
+ }];
+ 
+ //如果光标前没有表情
+ if (!deleteEmotion) {
+ [txtStrM replaceCharactersInRange:NSMakeRange(txtStrM.length-1, 1) withString:@""];
+ self.msgTextView.text = txtStrM;
+ }
+ 
+ }else{
+ [txtStrM insertString:emotionName atIndex:location];
+ self.msgTextView.text = txtStrM;
+ //光标后移
+ self.msgTextView.selectedRange = NSMakeRange(location + emotionName.length, 0);
+ NSLog(@"--------当前点击了表情 : ------------------%@",emotionName);
+ }
 }
 
 #pragma mark - scrollViewDelegate
@@ -550,4 +592,7 @@ - (void)dealloc
 {
  [self.msgTextView removeObserver:self forKeyPath:@"contentSize"];
 }
+
+
+
 @end