帶你們一步一步封裝一個聊天鍵盤（二）
繼上次寫了封裝聊天鍵盤（一）地址（http://www.cnblogs.com/bcblogs/p/4704046.html），今天有時間就繼續寫吧，哈哈，有什麼問題能夠在評論裏發給我哦（紅色字體是我當時怎麼想的）html
上次寫到表情鍵盤，今天咱們把餘下的寫完git
首先，咱們先把擴展的View寫了，擴展的View我是用的自定義的View，其實也就是幾張圖片而已啦，繼承UIView自定義一個View數組
個人想法是，封裝一個view，傳入一個數組，就能顯示一排間隔相等的圖片，我定義的時每一行有4個button,有5個間隔，每一個間隔的距離就應該是屏幕總寬度減去4*button的寬度在除以5，這樣建立button，在給button綁定tag，方便知道是點擊了哪一個buttonide
而後用代理講點擊了哪一個button傳回自定義的View去處理，你們也能夠修改個人源碼去適應本身的項目字體
BCMoreView.h文件動畫
#import <UIKit/UIKit.h> @protocol BCMoreViewDelegate <NSObject> - (void)didselectImageView:(NSInteger)index; @end @interface BCMoreView : UIView @property (nonatomic,strong)NSArray *imageArray; @property (nonatomic,weak)id <BCMoreViewDelegate> delegate; @end
BCMoreView.m文件atom
@implementation BCMoreView - (instancetype)initWithFrame:(CGRect)frame{ if(self = [super initWithFrame:frame]){ } return self; } - (void)setImageArray:(NSArray *)imageArray { CGFloat padding = ([UIScreen mainScreen].bounds.size.width - 42*4)/5; for(int i=0;i<imageArray.count;i++){ int clo = i % 4; int lin = i / 4; UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; btn.frame = CGRectMake(padding + (padding+42)*clo,20+(padding+42)*lin, 42, 42); btn.tag = i; [btn setBackgroundImage:[UIImage imageNamed:imageArray[i]] forState:UIControlStateNormal]; [btn addTarget:self action:@selector(selectImage:) forControlEvents:UIControlEventTouchUpInside]; [self addSubview:btn]; } } - (void)selectImage:(UIButton *)btn{ if(self.delegate){ [self.delegate didselectImageView:btn.tag]; } } @end
好，更多view也寫好了，如今咱們回到keyboardView，將這個自定義的View加上去spa
keyboardView.m文件3d
#import "BCKeyBoard.h" #import "DXFaceView.h" #import "BCMoreView.h" #define SCREEN_WIDTH ([[UIScreen mainScreen] bounds].size.width) #define SCREEN_HEIGHT ([[UIScreen mainScreen] bounds].size.height) #define kBCTextViewHeight 36 /**< 底部textView的高度 */ #define kHorizontalPadding 8 /**< 橫向間隔 */ #define kVerticalPadding 5 /**< 縱向間隔 */ @interface BCKeyBoard() <UITextViewDelegate,DXFaceDelegate,BCMoreViewDelegate> @property (nonatomic,strong)UIButton *faceBtn; @property (nonatomic,strong)UIButton *moreBtn; @property (nonatomic,strong)BCTextView *textView; @property (nonatomic,strong)UIImageView *backgroundImageView; @property (nonatomic,strong)UIView *faceView; @property (nonatomic,strong)UIView *activeView; @property (nonatomic,strong)UIView *moreView; @end @implementation BCKeyBoard - (instancetype)initWithFrame:(CGRect)frame { if (frame.size.height < (kVerticalPadding * 2 + kBCTextViewHeight)) { frame.size.height = kVerticalPadding * 2 + kBCTextViewHeight; } self = [super initWithFrame:frame]; if (self) { [self createUI]; } return self; } - (void)setFrame:(CGRect)frame { if (frame.size.height < (kVerticalPadding * 2 + kBCTextViewHeight)) { frame.size.height = kVerticalPadding * 2 + kBCTextViewHeight; } [super setFrame:frame]; } - (void)createUI{ //鍵盤高度改變是調用 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil]; self.backgroundImageView = [[UIImageView alloc] initWithFrame:self.bounds]; self.backgroundImageView.userInteractionEnabled = YES; self.backgroundImageView.image = [[UIImage imageNamed:@"messageToolbarBg"] stretchableImageWithLeftCapWidth:0.5 topCapHeight:10]; //表情按鈕 self.faceBtn = [UIButton buttonWithType:UIButtonTypeCustom]; self.faceBtn.frame = CGRectMake(kHorizontalPadding,kHorizontalPadding, 30, 30); [self.faceBtn addTarget:self action:@selector(willShowFaceView:) forControlEvents:UIControlEventTouchUpInside]; [self.faceBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_face"] forState:UIControlStateNormal]; [self.faceBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_keyboard"] forState:UIControlStateSelected]; [self addSubview:self.faceBtn]; //文本 self.textView = [[BCTextView alloc] initWithFrame:CGRectMake(CGRectGetMaxX(self.faceBtn.frame)+kHorizontalPadding, kHorizontalPadding, self.bounds.size.width - 4*kHorizontalPadding - 30*2, 30)]; self.textView.placeholderColor = [UIColor lightGrayColor]; self.textView.returnKeyType = UIReturnKeySend; self.textView.scrollEnabled = NO; self.textView.backgroundColor = [UIColor clearColor]; self.textView.layer.borderColor = [UIColor colorWithWhite:0.8f alpha:1.0f].CGColor; self.textView.layer.borderWidth = 0.65f; self.textView.layer.cornerRadius = 6.0f; self.textView.delegate = self; //更多按鈕 self.moreBtn = [UIButton buttonWithType:UIButtonTypeCustom]; self.moreBtn.frame = CGRectMake(CGRectGetMaxX(self.textView.frame)+kHorizontalPadding,kHorizontalPadding,30,30); [self.moreBtn addTarget:self action:@selector(willShowMoreView:) forControlEvents:UIControlEventTouchUpInside]; [self.moreBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_more"] forState:UIControlStateNormal]; [self.moreBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_keyboard"] forState:UIControlStateSelected]; [self addSubview:self.backgroundImageView]; [self.backgroundImageView addSubview:self.textView]; [self.backgroundImageView addSubview:self.faceBtn]; [self.backgroundImageView addSubview:self.moreBtn]; if (!self.faceView) { self.faceView = [[DXFaceView alloc] initWithFrame:CGRectMake(0, (kHorizontalPadding * 2 + 30), self.frame.size.width, 200)]; [(DXFaceView *)self.faceView setDelegate:self]; self.faceView.backgroundColor = [UIColor whiteColor]; self.faceView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin; } if (!self.moreView) { self.moreView = [[BCMoreView alloc] initWithFrame:CGRectMake(0, (kHorizontalPadding * 2 + 30), self.frame.size.width, 200)]; self.moreView.backgroundColor = [UIColor whiteColor]; [(BCMoreView *)self.moreView setDelegate:self]; self.moreView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin; } } - (void)keyboardWillChangeFrame:(NSNotification *)notification{ NSDictionary *userInfo = notification.userInfo; CGRect endFrame = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue]; CGFloat duration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]; UIViewAnimationCurve curve = [userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue]; //動畫 void(^animations)() = ^{ CGRect frame = self.frame; frame.origin.y = endFrame.origin.y - self.bounds.size.height; self.frame = frame; }; void(^completion)(BOOL) = ^(BOOL finished){ }; [UIView animateWithDuration:duration delay:0.0f options:(curve << 16 | UIViewAnimationOptionBeginFromCurrentState) animations:animations completion:completion]; } - (void)willShowBottomView:(UIView *)bottomView { if (![self.activeView isEqual:bottomView]) { CGFloat bottomHeight = bottomView ? bottomView.frame.size.height : 0; [self willShowBottomHeight:bottomHeight]; if (bottomView) { CGRect rect = bottomView.frame; rect.origin.y = CGRectGetMaxY(self.backgroundImageView.frame); bottomView.frame = rect; [self addSubview:bottomView]; } if (self.activeView) { [self.activeView removeFromSuperview]; } self.activeView = bottomView; } } - (void)willShowBottomHeight:(CGFloat)bottomHeight { CGRect fromFrame = self.frame; CGFloat toHeight = self.backgroundImageView.frame.size.height + bottomHeight; CGRect toFrame = CGRectMake(fromFrame.origin.x, fromFrame.origin.y + (fromFrame.size.height - toHeight), fromFrame.size.width, toHeight); self.frame = toFrame; } #pragma mark 表情鍵盤的代理方法 - (void)sendFace { } - (void)selectedFacialView:(NSString *)str isDelete:(BOOL)isDelete{ } //顯示錶情鍵盤 - (void)willShowFaceView:(UIButton *)btn{ btn.selected = !btn.selected; if(btn.selected == YES){ [self willShowBottomView:self.faceView]; [self.textView resignFirstResponder]; }else{ [self willShowBottomView:nil]; [self.textView becomeFirstResponder]; } } //顯示擴展鍵盤 - (void)willShowMoreView:(UIButton *)btn{ } //是點擊了哪一個圖片 - (void)didselectImageView:(NSInteger)index { } @end
其實顯示擴展鍵盤和顯示錶情鍵盤是同樣的，只不過要多傳個數組，告訴自定義的View，你要顯示什麼，個人想法是，這個顯示什麼應該使用者本身去決定，因此我決定提供個外部接口，讓使用者本身去傳入什麼樣的數組，佔位文字和文字顏色也讓使用者本身去定義代理
在BCKeyBoard.h文件中加一個叫imageArray的數組屬性
#import "BCKeyBoard.h" #import "DXFaceView.h" #import "BCMoreView.h" #define SCREEN_WIDTH ([[UIScreen mainScreen] bounds].size.width) #define SCREEN_HEIGHT ([[UIScreen mainScreen] bounds].size.height) #define kBCTextViewHeight 36 /**< 底部textView的高度 */ #define kHorizontalPadding 8 /**< 橫向間隔 */ #define kVerticalPadding 5 /**< 縱向間隔 */ @interface BCKeyBoard() <UITextViewDelegate,DXFaceDelegate,BCMoreViewDelegate> @property (nonatomic,strong)UIButton *faceBtn; @property (nonatomic,strong)UIButton *moreBtn; @property (nonatomic,strong)BCTextView *textView; @property (nonatomic,strong)UIImageView *backgroundImageView; @property (nonatomic,strong)UIView *faceView; @property (nonatomic,strong)UIView *activeView; @property (nonatomic,strong)UIView *moreView; @end @implementation BCKeyBoard - (instancetype)initWithFrame:(CGRect)frame { if (frame.size.height < (kVerticalPadding * 2 + kBCTextViewHeight)) { frame.size.height = kVerticalPadding * 2 + kBCTextViewHeight; } self = [super initWithFrame:frame]; if (self) { [self createUI]; } return self; } - (void)setFrame:(CGRect)frame { if (frame.size.height < (kVerticalPadding * 2 + kBCTextViewHeight)) { frame.size.height = kVerticalPadding * 2 + kBCTextViewHeight; } [super setFrame:frame]; } - (void)createUI{ //鍵盤高度改變是調用 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil]; self.backgroundImageView = [[UIImageView alloc] initWithFrame:self.bounds]; self.backgroundImageView.userInteractionEnabled = YES; self.backgroundImageView.image = [[UIImage imageNamed:@"messageToolbarBg"] stretchableImageWithLeftCapWidth:0.5 topCapHeight:10]; //表情按鈕 self.faceBtn = [UIButton buttonWithType:UIButtonTypeCustom]; self.faceBtn.frame = CGRectMake(kHorizontalPadding,kHorizontalPadding, 30, 30); [self.faceBtn addTarget:self action:@selector(willShowFaceView:) forControlEvents:UIControlEventTouchUpInside]; [self.faceBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_face"] forState:UIControlStateNormal]; [self.faceBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_keyboard"] forState:UIControlStateSelected]; [self addSubview:self.faceBtn]; //文本 self.textView = [[BCTextView alloc] initWithFrame:CGRectMake(CGRectGetMaxX(self.faceBtn.frame)+kHorizontalPadding, kHorizontalPadding, self.bounds.size.width - 4*kHorizontalPadding - 30*2, 30)]; self.textView.placeholderColor = [UIColor lightGrayColor]; self.textView.returnKeyType = UIReturnKeySend; self.textView.scrollEnabled = NO; self.textView.backgroundColor = [UIColor clearColor]; self.textView.layer.borderColor = [UIColor colorWithWhite:0.8f alpha:1.0f].CGColor; self.textView.layer.borderWidth = 0.65f; self.textView.layer.cornerRadius = 6.0f; self.textView.delegate = self; //更多按鈕 self.moreBtn = [UIButton buttonWithType:UIButtonTypeCustom]; self.moreBtn.frame = CGRectMake(CGRectGetMaxX(self.textView.frame)+kHorizontalPadding,kHorizontalPadding,30,30); [self.moreBtn addTarget:self action:@selector(willShowMoreView:) forControlEvents:UIControlEventTouchUpInside]; [self.moreBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_more"] forState:UIControlStateNormal]; [self.moreBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_keyboard"] forState:UIControlStateSelected]; [self addSubview:self.backgroundImageView]; [self.backgroundImageView addSubview:self.textView]; [self.backgroundImageView addSubview:self.faceBtn]; [self.backgroundImageView addSubview:self.moreBtn]; if (!self.faceView) { self.faceView = [[DXFaceView alloc] initWithFrame:CGRectMake(0, (kHorizontalPadding * 2 + 30), self.frame.size.width, 200)]; [(DXFaceView *)self.faceView setDelegate:self]; self.faceView.backgroundColor = [UIColor whiteColor]; self.faceView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin; } if (!self.moreView) { self.moreView = [[BCMoreView alloc] initWithFrame:CGRectMake(0, (kHorizontalPadding * 2 + 30), self.frame.size.width, 200)]; self.moreView.backgroundColor = [UIColor whiteColor]; [(BCMoreView *)self.moreView setDelegate:self]; self.moreView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin; } } - (void)keyboardWillChangeFrame:(NSNotification *)notification{ NSDictionary *userInfo = notification.userInfo; CGRect endFrame = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue]; CGFloat duration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]; UIViewAnimationCurve curve = [userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue]; //動畫 void(^animations)() = ^{ CGRect frame = self.frame; frame.origin.y = endFrame.origin.y - self.bounds.size.height; self.frame = frame; }; void(^completion)(BOOL) = ^(BOOL finished){ }; [UIView animateWithDuration:duration delay:0.0f options:(curve << 16 | UIViewAnimationOptionBeginFromCurrentState) animations:animations completion:completion]; } - (void)willShowBottomView:(UIView *)bottomView { if (![self.activeView isEqual:bottomView]) { CGFloat bottomHeight = bottomView ? bottomView.frame.size.height : 0; [self willShowBottomHeight:bottomHeight]; if (bottomView) { CGRect rect = bottomView.frame; rect.origin.y = CGRectGetMaxY(self.backgroundImageView.frame); bottomView.frame = rect; [self addSubview:bottomView]; } if (self.activeView) { [self.activeView removeFromSuperview]; } self.activeView = bottomView; } } - (void)willShowBottomHeight:(CGFloat)bottomHeight { CGRect fromFrame = self.frame; CGFloat toHeight = self.backgroundImageView.frame.size.height + bottomHeight; CGRect toFrame = CGRectMake(fromFrame.origin.x, fromFrame.origin.y + (fromFrame.size.height - toHeight), fromFrame.size.width, toHeight); self.frame = toFrame; } #pragma mark 表情鍵盤的代理方法 - (void)sendFace { } - (void)selectedFacialView:(NSString *)str isDelete:(BOOL)isDelete{ } //顯示錶情鍵盤 - (void)willShowFaceView:(UIButton *)btn{ btn.selected = !btn.selected; if(btn.selected == YES){ [self willShowBottomView:self.faceView]; [self.textView resignFirstResponder]; }else{ [self willShowBottomView:nil]; [self.textView becomeFirstResponder]; } } //顯示擴展鍵盤 - (void)willShowMoreView:(UIButton *)btn{ btn.selected = !btn.selected; if(btn.selected == YES){ [self willShowBottomView:self.moreView]; [self.textView resignFirstResponder]; [(BCMoreView *)self.moreView setImageArray:self.imageArray]; }else{ [self willShowBottomView:nil]; [self.textView becomeFirstResponder]; } } //是點擊了哪一個圖片 - (void)didselectImageView:(NSInteger)index { } @end
其實上次封裝的鍵盤有個小bug，你們都沒有發現嗎（估計你們都去下載以後就直接用了，也不看是怎麼封裝的了，太傷我心了....，我仍是但願你們一步一步的看下去，不懂的地方就在評論裏問）
其實解決這個bug很簡單，就是在textView剛開始編輯時，將2個按鈕的selected都變成NO，底部的activeView置成nil
- (void)textViewDidBeginEditing:(UITextView *)textView { [self willShowBottomView:nil]; self.faceBtn.selected = NO; self.moreBtn.selected = NO; }
接下來就是最重要的了，將文字和表情傳入到控制器中，我用的是代理傳值，表情的處理是網上找的，那何時將值傳到控制器呢，個人作法和QQ是同樣的，將return鍵變成發送鍵，在textView的代理方法
- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text中，那怎麼判斷點了發送鍵呢，其實就是判斷換行，點擊發送鍵就是換行字符
在發送後要將textView的內容置空，textView的高度也要隨輸入字符的多少改變高度，個人想法是傳入textView,返回一個高度因此我就寫了這個方法
- (CGFloat)getTextViewContentH:(UITextView *)textView { return ceilf([textView sizeThatFits:textView.frame.size].height); }
可是光有這個方法是不夠，還要有個改變整個view的frame和textView的frame的方法，個人想法是傳入一個高度，就能隨之改變view的frame和textView的frame，因此寫了這個方法，_lastHeight表明上次的高度，由於textView的高度隨着輸入文字而改變，超過一行才改變高度，沒超過一行仍是上一次
的高度，代理方法是把高度返回給控制器
- (void)changeFrame:(CGFloat)height{ if (height == _lastHeight) { return; } else{ CGFloat changeHeight = height - _lastHeight; CGRect rect = self.frame; rect.size.height += changeHeight; rect.origin.y -= changeHeight; self.frame = rect; rect = self.backgroundImageView.frame; rect.size.height += changeHeight; self.backgroundImageView.frame = rect; [self.textView setContentOffset:CGPointMake(0.0f, (self.textView.contentSize.height - self.textView.frame.size.height) / 2) animated:YES]; CGRect frame = self.textView.frame; frame.size.height = height; self.textView.frame = frame; _lastHeight = height; if (self.delegate && [self.delegate respondsToSelector:@selector(returnHeight:)]) { [self.delegate returnHeight:height]; } } }
最後BCKeyBoard.h
#import <UIKit/UIKit.h> @protocol BCKeyBoardDelegate <NSObject> /** 發送的文字 */ - (void)didSendText:(NSString *)text; /** 回調返回高度 */ - (void)returnHeight:(CGFloat)height; @end @interface BCKeyBoard : UIView @property (nonatomic,weak)id <BCKeyBoardDelegate> delegate; @property (nonatomic,strong)NSArray *imageArray; /**< 點擊加號彈出的View中的圖片數組 */ @property (nonatomic,strong)NSString *placeholder; /**< 佔位文字 */ @property (nonatomic,strong)UIColor *placeholderColor; /**< 佔位文字顏色 */ @end
BCKeyBoard.m
#import "BCKeyBoard.h" #import "BCTextView.h" #import "Const.h" #import "DXFaceView.h" #import "BCMoreView.h" @interface BCKeyBoard () <UITextViewDelegate,DXFaceDelegate,BCMoreViewDelegate> @property (nonatomic,strong)UIImageView *backgroundImageView; @property (nonatomic,strong)UIButton *faceBtn; @property (nonatomic,strong)UIButton *moreBtn; @property (nonatomic,strong)BCTextView *textView; @property (nonatomic,strong)UIView *faceView; @property (nonatomic,assign)BOOL isTop; @property (nonatomic,strong)UIView *moreView; @property (nonatomic,assign)CGFloat lastHeight; //拓展的view @property (nonatomic,strong)UIView *activeView; @end @implementation BCKeyBoard - (instancetype)initWithFrame:(CGRect)frame { if (frame.size.height < (kVerticalPadding * 2 + kBCTextViewHeight)) { frame.size.height = kVerticalPadding * 2 + kBCTextViewHeight; } self = [super initWithFrame:frame]; if (self) { [self createUI]; } return self; } - (void)setFrame:(CGRect)frame { if (frame.size.height < (kVerticalPadding * 2 + kBCTextViewHeight)) { frame.size.height = kVerticalPadding * 2 + kBCTextViewHeight; } [super setFrame:frame]; } - (void)createUI { _lastHeight = 30; //註冊鍵盤改變是調用 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillChangeFrame:) name:UIKeyboardWillChangeFrameNotification object:nil]; self.backgroundImageView = [[UIImageView alloc] initWithFrame:self.bounds]; self.backgroundImageView.userInteractionEnabled = YES; self.backgroundImageView.image = [[UIImage imageNamed:@"messageToolbarBg"] stretchableImageWithLeftCapWidth:0.5 topCapHeight:10]; //表情按鈕 self.faceBtn = [UIButton buttonWithType:UIButtonTypeCustom]; self.faceBtn.frame = CGRectMake(kHorizontalPadding,kHorizontalPadding, 30, 30); [self.faceBtn addTarget:self action:@selector(willShowFaceView:) forControlEvents:UIControlEventTouchUpInside]; [self.faceBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_face"] forState:UIControlStateNormal]; [self.faceBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_keyboard"] forState:UIControlStateSelected]; [self addSubview:self.faceBtn]; //文本 self.textView = [[BCTextView alloc] initWithFrame:CGRectMake(CGRectGetMaxX(self.faceBtn.frame)+kHorizontalPadding, kHorizontalPadding, self.bounds.size.width - 4*kHorizontalPadding - 30*2, 30)]; self.textView.placeholderColor = self.placeholderColor; self.textView.returnKeyType = UIReturnKeySend; self.textView.scrollEnabled = NO; self.textView.backgroundColor = [UIColor clearColor]; self.textView.layer.borderColor = [UIColor colorWithWhite:0.8f alpha:1.0f].CGColor; self.textView.layer.borderWidth = 0.65f; self.textView.layer.cornerRadius = 6.0f; self.textView.delegate = self; //更多按鈕 self.moreBtn = [UIButton buttonWithType:UIButtonTypeCustom]; self.moreBtn.frame = CGRectMake(CGRectGetMaxX(self.textView.frame)+kHorizontalPadding,kHorizontalPadding,30,30); [self.moreBtn addTarget:self action:@selector(willShowactiveView:) forControlEvents:UIControlEventTouchUpInside]; [self.moreBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_more"] forState:UIControlStateNormal]; [self.moreBtn setBackgroundImage:[UIImage imageNamed:@"chatBar_keyboard"] forState:UIControlStateSelected]; [self addSubview:self.backgroundImageView]; [self.backgroundImageView addSubview:self.textView]; [self.backgroundImageView addSubview:self.faceBtn]; [self.backgroundImageView addSubview:self.moreBtn]; if (!self.faceView) { self.faceView = [[DXFaceView alloc] initWithFrame:CGRectMake(0, (kHorizontalPadding * 2 + 30), self.frame.size.width, 200)]; [(DXFaceView *)self.faceView setDelegate:self]; self.faceView.backgroundColor = [UIColor whiteColor]; self.faceView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin; } if (!self.moreView) { self.moreView = [[BCMoreView alloc] initWithFrame:CGRectMake(0, (kHorizontalPadding * 2 + 30), self.frame.size.width, 200)]; self.moreView.backgroundColor = [UIColor whiteColor]; [(BCMoreView *)self.moreView setDelegate:self]; self.moreView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin; } } - (void)changeFrame:(CGFloat)height{ if (height == _lastHeight) { return; } else{ CGFloat changeHeight = height - _lastHeight; CGRect rect = self.frame; rect.size.height += changeHeight; rect.origin.y -= changeHeight; self.frame = rect; rect = self.backgroundImageView.frame; rect.size.height += changeHeight; self.backgroundImageView.frame = rect; [self.textView setContentOffset:CGPointMake(0.0f, (self.textView.contentSize.height - self.textView.frame.size.height) / 2) animated:YES]; CGRect frame = self.textView.frame; frame.size.height = height; self.textView.frame = frame; _lastHeight = height; if (self.delegate && [self.delegate respondsToSelector:@selector(returnHeight:)]) { [self.delegate returnHeight:height]; } } } - (void)setPlaceholder:(NSString *)placeholder { self.textView.placeholder = placeholder; } - (void)setPlaceholderColor:(UIColor *)placeholderColor { self.textView.placeholderColor = placeholderColor; } - (void)keyboardWillChangeFrame:(NSNotification *)notification{ NSDictionary *userInfo = notification.userInfo; CGRect endFrame = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue]; CGFloat duration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]; UIViewAnimationCurve curve = [userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue]; void(^animations)() = ^{ CGRect frame = self.frame; frame.origin.y = endFrame.origin.y - self.bounds.size.height; self.frame = frame; }; void(^completion)(BOOL) = ^(BOOL finished){ }; [UIView animateWithDuration:duration delay:0.0f options:(curve << 16 | UIViewAnimationOptionBeginFromCurrentState) animations:animations completion:completion]; } #pragma mark 表情View - (void)willShowFaceView:(UIButton *)btn { btn.selected = !btn.selected; if(btn.selected == YES){ [self willShowBottomView:self.faceView]; [self.textView resignFirstResponder]; }else{ [self willShowBottomView:nil]; [self.textView becomeFirstResponder]; } } #pragma mark 表更多View - (void)willShowactiveView:(UIButton *)btn { btn.selected = !btn.selected; if(btn.selected == YES){ [self willShowBottomView:self.moreView]; [self.textView resignFirstResponder]; [(BCMoreView *)self.moreView setImageArray:self.imageArray]; }else{ [self willShowBottomView:nil]; [self.textView becomeFirstResponder]; } } - (void)willShowBottomHeight:(CGFloat)bottomHeight { CGRect fromFrame = self.frame; CGFloat toHeight = self.backgroundImageView.frame.size.height + bottomHeight; CGRect toFrame = CGRectMake(fromFrame.origin.x, fromFrame.origin.y + (fromFrame.size.height - toHeight), fromFrame.size.width, toHeight); self.frame = toFrame; if (self.delegate && [self.delegate respondsToSelector:@selector(returnHeight:)]) { [self.delegate returnHeight:toHeight]; } } - (CGFloat)getTextViewContentH:(UITextView *)textView { return ceilf([textView sizeThatFits:textView.frame.size].height); } - (void)textViewDidBeginEditing:(UITextView *)textView { [self willShowBottomView:nil]; self.faceBtn.selected = NO; self.moreBtn.selected = NO; } - (void)willShowKeyboardFromFrame:(CGRect)beginFrame toFrame:(CGRect)toFrame { if (beginFrame.origin.y == [[UIScreen mainScreen] bounds].size.height) { [self willShowBottomHeight:toFrame.size.height]; if (self.activeView) { [self.activeView removeFromSuperview]; } self.activeView = nil; } else if(toFrame.origin.y == [[UIScreen mainScreen] bounds].size.height) { [self willShowBottomHeight:0]; } else{ [self willShowBottomHeight:toFrame.size.height]; } } - (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text { if ([text isEqualToString:@"\n"]) { if ([self.delegate respondsToSelector:@selector(didSendText:)]) { [self.delegate didSendText:textView.text]; self.textView.text = @""; [self changeFrame:ceilf([textView sizeThatFits:textView.frame.size].height)]; } return NO; } return YES; } - (void)willShowBottomView:(UIView *)bottomView { if (![self.activeView isEqual:bottomView]) { CGFloat bottomHeight = bottomView ? bottomView.frame.size.height : 0; [self willShowBottomHeight:bottomHeight]; if (bottomView) { CGRect rect = bottomView.frame; rect.origin.y = CGRectGetMaxY(self.backgroundImageView.frame); bottomView.frame = rect; [self addSubview:bottomView]; } if (self.activeView) { [self.activeView removeFromSuperview]; } self.activeView = bottomView; } } - (void)textViewDidChange:(UITextView *)textView { [self changeFrame:ceilf([textView sizeThatFits:textView.frame.size].height)]; } - (void)selectedFacialView:(NSString *)str isDelete:(BOOL)isDelete { NSString *chatText = self.textView.text; if (!isDelete && str.length > 0) { self.textView.text = [NSString stringWithFormat:@"%@%@",chatText,str]; } else { if (chatText.length >= 2) { NSString *subStr = [chatText substringFromIndex:chatText.length-2]; if ([(DXFaceView *)self.faceView stringIsFace:subStr]) { self.textView.text = [chatText substringToIndex:chatText.length-2]; [self textViewDidChange:self.textView]; return; } } if (chatText.length > 0) { self.textView.text = [chatText substringToIndex:chatText.length-1]; } } [self textViewDidChange:self.textView]; } - (void)sendFace { NSString *chatText = self.textView.text; if (chatText.length > 0) { if ([self.delegate respondsToSelector:@selector(didSendText:)]) { [self.delegate didSendText:chatText]; self.textView.text = @""; [self changeFrame:ceilf([self.textView sizeThatFits:self.textView.frame.size].height)]; } } } - (void)didselectImageView:(NSInteger)index { //這裏是更多的view中選擇了哪一個圖片 NSLog(@"%ld",(long)index); } - (void)dealloc { [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillChangeFrameNotification object:nil]; } @end
運行效果
基本封裝好了，下一篇將封裝點擊moreView裏面按鈕的方法，順便更新git庫，敬請期待哦。
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