
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.cnblogs.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);
}
}
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作者:杰瑞教育