XMPP键盘订制实现图文混排

2019-11-14 18:36:52

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　　在现阶段的通信服务中，各种标准都有，因此会出现无法实现相互连通，而XMPP(Extensible Message and PResence Protocol)协议的出现，实现了整个及时通信服务协议的互通。有了这个协议之后，使用任何一个组织或者个人提供的即使通信服务，都能够无障碍的与其他的及时通信服务的用户进行交流。例如google 公司2005年推出的Google talk就是一款基于XMPP协议的即时通信软件。在前面的系列博文中，我们介绍了XMPP的详细使用（查看系列文章：http://www.VEVb.com/jerehedu/p/4607599.html），下面我们就谈论一下如何简单的使用XMPP的键盘订制：

　　1、首先增加键盘的自定义小图标和弹出效果

　　效果图如下：

#pragma mark  - 排列按钮- (void) setUpSubviews{        //1 初始化图片名称    NSArray* array=@[@"compose_camerabutton_background_os7",@"compose_toolbar_picture_os7",@"compose_mentionbutton_background_os7",@"compose_trendbutton_background_os7",@"compose_emoticonbutton_background_os7"];        //2 排列按钮    CGFloat space=(kWidth-kMargin*2-kItemNum*kItemWidth)/(kItemNum-1)+kItemWidth;        for (int i=0; i<kItemNum; i++) {                UIButton * button=[UIButton buttonWithType:UIButtonTypeCustom];        button.tag=i;        button.frame=CGRectMake(kMargin+i*space, self.frame.size.height/2.0-kItemHeight/2.0, kItemWidth, kItemHeight);        //        button.backgroundColor=JRRandomColor();        [button setBackgroundImage:[UIImage imageNamed:array[i]] forState:UIControlStateNormal];                //Actions 按钮事件        [button addTarget:self action:@selector(btClick:) forControlEvents:UIControlEventTouchUpInside];        [self addSubview:button];    }  }/增加键盘事件弹出通知监控    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyUp:) name:UIKeyboardWillShowNotification object:nil];        //增加键盘事件消失通知监控[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyDown:) name:UIKeyboardWillHideNotification object:nil];#pragma mark - 键盘升起来- (void) keyUp:(NSNotification *) notification{        //获取动画的时间    CGFloat animaTime=[notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue];        //获取键盘的尺寸（用来确定动画的范围）    CGRect frame=[notification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];        //控制键盘动画    [UIView animateWithDuration:animaTime animations:^{        self.keyaccess.transform=CGAffineTransformMakeTranslation(0, frame.size.height*-1);    }];            }#pragma mark - 键盘落下去- (void) keyDown:(NSNotification *) notification{        //获取动画的时间    CGFloat animaTime=[notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue];        [UIView animateWithDuration:animaTime animations:^{        self.keyAccess.transform=CGAffineTransformIdentity;    }];    }

　　2、定义自定义键盘的图标

　　表情主要分为三块默认,Emoji,浪小花，默认和浪小花为图标，而Emoji为字符，因此我们需要进行特殊处理。效果图如下：

　　代码如下：

　　1、我们首先自定义键盘视图，同时我们需要把表情抽取出来因此还需要自定义一个滚动表情视图

  //增加滚动表情        [self setUpSrollEmotion];                //增加自定义的tab        [self setUpTab];                //设置默认第一个        if (self.btArray.count>1) {            [self clickBt:self.btArray[1]];            self.emotionScroll.emotionArray=self.defaultArray;        }else{            [self clickBt:[self.btArray firstObject]];        }pragma mark - 自定义键盘布局#pragma mark 设置滚动表情- (void) setUpSrollEmotion{    JRScrollEmotion * scroll=[[JRScrollEmotion alloc] initWithFrame:CGRectMake(0, 0, kWidth, self.frame.size.height-44)];    self.emotionScroll=scroll;        scroll.emotionArray=nil;    [self addSubview:scroll];        }#pragma mark 增加tab- (void) setUpTab{        UIView * bgview=[[UIView alloc] initWithFrame:CGRectMake(0, self.frame.size.height-44, kWidth, 44)];    bgview.backgroundColor=JRColor(109, 109, 109);    [self addSubview:bgview];        //计算按钮宽度    CGFloat width=kWidth/4.0;    //标题数组    NSArray * array=@[@"最近",@"默认",@"Emoji",@"浪小花"];        for (int i=0 ; i<4; i++) {        UIButton * button=[[UIButton alloc] initWithFrame:CGRectMake(i*width, 0, width, 44)];        button.tag=i;        [button setTitle:array[i] forState:UIControlStateNormal];        [button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];        [button addTarget:self action:@selector(clickBt:) forControlEvents:UIControlEventTouchUpInside];        [self.btArray addObject:button];        [bgview addSubview:button];            }        }

　　2、第二步我们需要进行对表情进行循环布局，每个表情作为一个button,我们进行循环摆放

-(void)setEmotionArray:(NSArray *)emotionArray{    _emotionArray=emotionArray;        //移除所有button    [self.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];        //计算总页数    NSInteger totalPage=ceil(self.emotionArray.count/23.0);    self.contentSize=CGSizeMake(totalPage*kWidth, 0);    CGFloat hspace=(kWidth-40-8*35)/7.0+35;    CGFloat vspace=(self.frame.size.height-20-3*35)/2.0+35;        for (int i=0; i<self.emotionArray.count; i++) {        NSInteger nowPage=[self getNowPageWith:i];                NSInteger col=(i-nowPage*23)%8;        NSInteger row=(i-nowPage*23)/8;                UIButton *button=[[UIButton alloc ] initWithFrame:CGRectMake(nowPage*kWidth+20+col*hspace, 10+row*vspace, 35, 35)];                        //根据表类型设置图片        JREmotionModel * model=self.emotionArray[i];                if (model.imageName==nil) {//emoji表情            [button setTitle:model.emoji forState:UIControlStateNormal];            button.titleLabel.font=[UIFont systemFontOfSize:35];        }else{          [button setImage:[UIImage imageNamed:model.imageName] forState:UIControlStateNormal];        }                //监控点击事件        button.tag=i;        [button addTarget:self action:@selector(emotionClick:) forControlEvents:UIControlEventTouchUpInside];        [self addSubview:button];            }               for (int i=0; i<totalPage; i++) {                //增加删除按钮        UIButton *button= [UIButton buttonWithType:UIButtonTypeCustom];                if (i<totalPage-1) {            button.frame=CGRectMake(kWidth-35-20+i*kWidth, vspace*2+10, 35, 35);        }else{            //获取剩下的个数            NSInteger numLeft= self.emotionArray.count-i*23;            NSInteger row=(numLeft)/8;            NSInteger col=(numLeft)%8;            button.frame=CGRectMake(i*kWidth+20+hspace*col, 10+vspace*row, 35, 35);        }                //====        [button setImage:[UIImage imageNamed:@"compose_emotion_delete_highlighted"] forState:UIControlStateNormal];                [button addTarget:self action:@selector(emotionDelete) forControlEvents:UIControlEventTouchUpInside];        [self addSubview:button];        }      }

　　3、我们需要进行图文混排将信息展示到文本框

　　　　①当点击表情的时候我们需要发送通知，告诉接受者

#pragma mark - 表情点解- (void) emotionClick:(UIButton *) button{    //获取对应的表情模型    JREmotionModel *model=self.emotionArray[button.tag];        //发送通知    [[NSNotificationCenter defaultCenter] postNotificationName:AddEmotionNotification object:nil userInfo:@{@"emotion":model}];

　　　　②接收到通知后通过富文本技术进行显示

- (void)addEmotion:(NSNotification * ) notification{       JREmotionModel * model= notification.userInfo[@"emotion"];               //如果是Emoji表情直接插入文本即可    if (model.imageName.length==0) {        [self.tf insertText:model.emoji];    }else{        //获取之前的文本        NSAttributedString * text=self.tf.attributedText;                //将之前的文本包含进去        NSMutableAttributedString * attr=[[NSMutableAttributedString alloc] initWithAttributedString:text];                //记录当前的位置        NSInteger index;                //如果是图片表情，需要重新初始化一个附件，并设置图片然后拼接        JRTextAttachMent * temAttch=[[JRTextAttachMent alloc] init];        temAttch.model=model;        temAttch.bounds=CGRectMake(0, -2.5, self.tf.font.lineHeight-5, self.tf.font.lineHeight-5);        temAttch.image=[UIImage imageNamed:model.imageName];                NSAttributedString * tempStr=[NSAttributedString attributedStringWithAttachment:temAttch];                //保存一下之前的位置        index=self.tf.selectedRange.location;        [attr insertAttributedString:tempStr atIndex:index];                //重新给文本框赋值        [attr addAttribute:NSFontAttributeName value:self.tf.font range:NSMakeRange(0, attr.length)];        self.tf.attributedText=attr;        self.tf.selectedRange=NSMakeRange(index+1, 0);    }     }