// // LZBKeyBoardToolBar.m // LZBKeyBoardView // // demo地址：https://github.com/lzbgithubcode/LZBKeyBoardView.git // Created by zibin on 16/12/4. // Copyright © 2016年 apple. All rights reserved. // #import "LZBKeyBoardToolBar.h" #import "LZBTextView.h" #import "UIView+LZBViewFrame.h" //颜色转换 #define LZBColorRGB(r,g,b) [UIColor colorWithRed:r/255.0 green:g/255.0 blue:b/255.0 alpha:1] #define LZBKeyboardBundleImage(name) [UIImage imageNamed:[NSString stringWithFormat:@"%@%@",@"Resource.bundle/",name]] #define kKeyboardViewToolBarHeight 50 // 默认键盘输入工具条的高度 #define kKeyboardViewToolBar_TextView_Height 35 // 默认键盘输入框的高度 #define kKeyboardViewToolBar_TextView_LimitHeight 60 // 默认键盘输入框的限制高度 #define kKeyboardViewToolBar_SendBtn_Width 40 // 默认发送按钮的宽度 #define kKeyboardViewToolBar_Horizontal_DefaultMargin 15 //水平方向默认间距 #define kKeyboardViewToolBar_Vertical_DefaultMargin 8 //垂直方向默认间距 #define LZBScreenHeight [UIScreen mainScreen].bounds.size.height #define LZBScreenWidth [UIScreen mainScreen].bounds.size.width #define inputextViewFont [UIFont systemFontOfSize:14.0] @interface LZBKeyBoardToolBar() //View @property (nonatomic, strong) LZBTextView *inputTextView; //输入框 @property (nonatomic, strong) UIView *topLine; // 顶部分割线 @property (nonatomic, strong) UIView *bottomLine; // 底部分割线 @property (nonatomic, strong) UIButton *sendBtn; // 发送按钮 //data @property (nonatomic, copy) void(^sendTextBlock)(NSString *text); //输入框输入字符串回调Blcok @property (nonatomic, assign) CGFloat textHeight; //输入文字高度 @property (nonatomic, assign) CGFloat animationDuration; //动画时间 @property (nonatomic, strong) NSString *placeHolder; //占位文字 @end @implementation LZBKeyBoardToolBar #pragma mark - API + (LZBKeyBoardToolBar *)showKeyBoardWithConfigToolBarHeight:(CGFloat)toolBarHeight sendTextCompletion:(void(^)(NSString *sendText))sendTextBlock { LZBKeyBoardToolBar *toolBar = [[LZBKeyBoardToolBar alloc]init]; toolBar.backgroundColor = LZBColorRGB(247, 248, 250); if(toolBarHeight < kKeyboardViewToolBarHeight) toolBarHeight = kKeyboardViewToolBarHeight; toolBar.frame = CGRectMake(0, LZBScreenHeight - toolBarHeight, LZBScreenWidth, toolBarHeight); toolBar.sendTextBlock = sendTextBlock; return toolBar; } - (void)setInputViewPlaceHolderText:(NSString *)placeText { self.inputTextView.placeholder = placeText; self.placeHolder = placeText; } - (void)becomeFirstResponder{ [self.inputTextView becomeFirstResponder]; self.hidden = NO; } - (void)resignFirstResponder{ [self.inputTextView resignFirstResponder]; } #pragma mark - private - (instancetype)initWithFrame:(CGRect)frame { if(self = [super initWithFrame:frame]) { [self youpaifsetupUI]; } return self; } - (void)youpaifsetupUI { [self addSubview:self.inputTextView]; [self addSubview:self.topLine]; [self addSubview:self.bottomLine]; [self addSubview:self.sendBtn]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textDidChange) name:UITextViewTextDidChangeNotification object:self.inputTextView]; } - (void)layoutSubviews { [super layoutSubviews]; __weak typeof(self) weakSelf = self; CGFloat height = (self.textHeight + kKeyboardViewToolBar_TextView_Height)> kKeyboardViewToolBarHeight ? (self.textHeight + kKeyboardViewToolBar_TextView_Height) : kKeyboardViewToolBarHeight; CGFloat offsetY = self.LZB_heigth - height; [UIView animateWithDuration:self.animationDuration animations:^{ weakSelf.LZB_y += offsetY; weakSelf.LZB_heigth = height; }]; self.topLine.LZB_width = self.LZB_width; self.bottomLine.LZB_width = self.LZB_width; CGSize sendButtonSize = self.sendBtn.currentImage.size; self.sendBtn.LZB_width = sendButtonSize.width; self.sendBtn.LZB_heigth = sendButtonSize.height; self.sendBtn.LZB_x = self.LZB_width - sendButtonSize.width - kKeyboardViewToolBar_Horizontal_DefaultMargin; self.inputTextView.LZB_width = self.LZB_width - sendButtonSize.width - 3 *kKeyboardViewToolBar_Horizontal_DefaultMargin; self.inputTextView.LZB_x = kKeyboardViewToolBar_Horizontal_DefaultMargin; [UIView animateWithDuration:self.animationDuration animations:^{ weakSelf.inputTextView.LZB_heigth = weakSelf.LZB_heigth - 2 *kKeyboardViewToolBar_Vertical_DefaultMargin; weakSelf.inputTextView.LZB_centerY = weakSelf.LZB_heigth * 0.5; weakSelf.sendBtn.LZB_y = weakSelf.LZB_heigth - sendButtonSize.height -kKeyboardViewToolBar_Vertical_DefaultMargin; weakSelf.bottomLine.LZB_y = weakSelf.LZB_heigth - weakSelf.bottomLine.LZB_heigth; }]; [self.inputTextView setNeedsUpdateConstraints]; } #pragma mark - handle - (void)keyboardWillChangeFrame:(NSNotification *)notification { CGRect keyboardFrame = [notification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue]; CGFloat keyboardHeight = keyboardFrame.size.height; CGFloat keyboardAnimaitonDuration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue]; self.animationDuration = keyboardAnimaitonDuration; NSInteger option = [notification.userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue]; //判断键盘是否出现 BOOL isKeyBoardHidden = LZBScreenHeight == keyboardFrame.origin.y; CGFloat offsetMarginY = isKeyBoardHidden ? LZBScreenHeight - self.LZB_heigth :LZBScreenHeight - self.LZB_heigth - keyboardHeight; [UIView animateKeyframesWithDuration:self.animationDuration delay:0 options:option animations:^{ self.LZB_y = offsetMarginY; } completion:nil]; } - (void)textDidChange { if([self.inputTextView.text containsString:@"\n"]) { [self sendBtnClick]; return; } CGFloat margin = self.inputTextView.textContainerInset.left + self.inputTextView.textContainerInset.right; CGFloat height = [self.inputTextView.text boundingRectWithSize:CGSizeMake(self.inputTextView.LZB_width - margin, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName : self.inputTextView.font} context:nil].size.height; if(height == self.textHeight) return; // 确保输入框不会无限增高，控制在显示4行 if (height > kKeyboardViewToolBar_TextView_LimitHeight) { return; } self.textHeight = height; [self setNeedsLayout]; } - (void)sendBtnClick { if(self.sendTextBlock) self.sendTextBlock(self.inputTextView.text); self.textHeight = 0; [self resetInputView]; } - (void)resetInputView { self.inputTextView.text = @""; [self setInputViewPlaceHolderText:self.placeHolder.length > 0 ? self.placeHolder : @""]; [self.inputTextView resignFirstResponder]; self.inputTextView.placeHolderHidden = self.inputTextView.hasText; } #pragma mark - lazy - (UIButton *)sendBtn { if(_sendBtn == nil) { _sendBtn = [UIButton buttonWithType:UIButtonTypeCustom]; [_sendBtn setImage:LZBKeyboardBundleImage(@"btn_comment_expression_send") forState:UIControlStateNormal]; [_sendBtn setTitleColor:[UIColor blueColor] forState:UIControlStateNormal]; [_sendBtn addTarget:self action:@selector(sendBtnClick) forControlEvents:UIControlEventTouchUpInside]; } return _sendBtn; } - (LZBTextView *)inputTextView { if(_inputTextView == nil) { _inputTextView = [[LZBTextView alloc]init]; _inputTextView.layer.cornerRadius = 4; _inputTextView.layer.masksToBounds = YES; _inputTextView.layer.borderWidth = 1; _inputTextView.layer.borderColor = LZBColorRGB(221, 221, 221).CGColor; _inputTextView.font = inputextViewFont; _inputTextView.textColor = LZBColorRGB(102, 102, 102); _inputTextView.tintColor = _inputTextView.textColor; _inputTextView.enablesReturnKeyAutomatically = YES; _inputTextView.returnKeyType = UIReturnKeySend; _inputTextView.placeholderColor = LZBColorRGB(150, 150, 150); } return _inputTextView; } - (UIView *)topLine{ if (_topLine == nil) { _topLine = [[UIView alloc] init]; _topLine.LZB_heigth = 0.5; _topLine.backgroundColor = LZBColorRGB(214, 214, 214); } return _topLine; } - (UIView *)bottomLine{ if (_bottomLine == nil) { _bottomLine = [[UIView alloc] init]; _bottomLine.backgroundColor = LZBColorRGB(214, 214, 214); _bottomLine.LZB_heigth = 0.5; _bottomLine.hidden = YES; } return _bottomLine; } @end