iOS 动态表情控件视图的实现

2015-09-04 by 木易哥哥　

做一个表情控件视图实现的思路主要是，UIScrollView装上表情的自定义view，表情view对应配置的表情库显示。

写了3个对象，EmotionScrollView，EmotionView，emoticons.plist，相关的主要代码是：

EmotionScrollView.h

#import <UIKit/UIKit.h>

#import "EmotionView.h"

@interface EmotionScrollView : UIView<UIScrollViewDelegate>{

UIScrollView *scrollView;

EmotionView *emotionView;

UIPageControl *pageControl;

}

-(void)getSelectBlock:(SelectBlock)block;

-(void)deleteBtnPressBlock:(deleteBtnPress)block;

-(void)sendBtnPressBlock:(sendBtnPress)block;

@end

EmotionScrollView.m

#import "EmotionScrollView.h"

@implementation EmotionScrollView

-(id)initWithFrame:(CGRect)frame{

self = [super initWithFrame:frame];

if (self) {

[self initViews];

}

return self;

}

-(void)getSelectBlock:(SelectBlock)block{

if (self != nil) {

emotionView.block = block;

}

-(void)deleteBtnPressBlock:(deleteBtnPress)block

{

if (self != nil) {

emotionView.deleteBtnPressBlock = block;

}

-(void)sendBtnPressBlock:(sendBtnPress)block

{

if (self != nil) {

emotionView.sendBtnPressBlock = block;

}

- (void)initViews{

emotionView = [[EmotionView alloc]initWithFrame:CGRectMake(0, 0, 320*4,253)];

scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 253)];

//NSLog(@"emotionView.height:%f",emotionView.height);

scrollView.backgroundColor = [UIColor whiteColor];

scrollView.contentSize = CGSizeMake(emotionView.width, 0);

scrollView.alwaysBounceVertical = NO;

scrollView.pagingEnabled = YES;

scrollView.showsHorizontalScrollIndicator = NO;

scrollView.clipsToBounds = NO;

scrollView.delegate = self;

[scrollView addSubview:emotionView];

[self addSubview:scrollView];

pageControl = [[UIPageControl alloc]initWithFrame:CGRectMake(140, 220, 40, 20)];//

pageControl.backgroundColor = [UIColor clearColor];

pageControl.numberOfPages = emotionView.pageNumber;

pageControl.pageIndicatorTintColor = [UIColor grayColor];

pageControl.currentPageIndicatorTintColor = [UIColor blackColor];

pageControl.currentPage = 0;

[self addSubview:pageControl];

}

- (void)drawRect:(CGRect)rect {

//[[UIImage imageNamed:@"emoticon_keyboard_background.png"]drawInRect:rect];

}

#pragma mark - UIScrollViewDelegate

- (void)scrollViewDidScroll:(UIScrollView *)_scrollView{

int pageNumber = _scrollView.contentOffset.x/SCREEN_WIDTH;

pageControl.currentPage = pageNumber;

}

@end

EmotionView.h

#import <UIKit/UIKit.h>

#import "SvGifView.h"

typedef void(^SelectBlock)(NSString *emotionName);

typedef void(^deleteBtnPress)();

typedef void(^sendBtnPress)();

@interface EmotionView : UIView{

@private

NSMutableArray *items;

UIImageView *magnifierView;

SvGifView *_gifView;

}

@property(nonatomic,copy)NSString *selectedEmotion;

@property(nonatomic,assign)NSInteger pageNumber;

@property(nonatomic,copy)SelectBlock block;

@property(copy,nonatomic)deleteBtnPress deleteBtnPressBlock;

@property(copy,nonatomic)sendBtnPress sendBtnPressBlock;

@property(nonatomic,assign)float width;

@property(nonatomic,assign)float height;

@end

EmotionView.m

-(void)initData{

items = [[NSMutableArray alloc]init];

NSString *filePath = [[NSBundle mainBundle]pathForResource:@"emoticons" ofType:@"plist"]; //"emoticons.plist"是个数组

NSArray *fileArray = [NSArray arrayWithContentsOfFile:filePath]; //目前这个fileArray有没有分类的104个表情，现在我们需要把它分类成上面注释中items的形式

//NSLog(@"fileArray:%@",fileArray);

//----------整理表情，整理成一个二维数组----------

NSMutableArray *item2D = nil;

for (int i=0; i < fileArray.count; i++) {

NSDictionary *item = [fileArray objectAtIndex:i];

if (i % 28 == 0) {

item2D = [NSMutableArray arrayWithCapacity:28];

[items addObject:item2D];

}

[item2D addObject:item];

}

//----------设置尺寸---------------

self.width = items.count *SCREEN_WIDTH;

self.height = 4 * item_height;

}

//画图

- (void)drawRect:(CGRect)rect {

int row = 0,colum = 0; //定义行、列

for (int i = 0; i < items.count; i++) {

NSArray *items2D = [items objectAtIndex:i];

for (int j = 0; j < items2D.count+1; j++) {

CGRect emotionFrame = CGRectMake(colum*item_width + 15, row*item_height +15, 20, 20);

//考虑页数，需要加上前面一页的宽度

float x = (i*SCREEN_WIDTH) + emotionFrame.origin.x;

emotionFrame.origin.x = x;

if (j < items2D.count)//为了增加删除发送按钮

{

NSDictionary *item = [items2D objectAtIndex:j];

//[emotionImage drawInRect:emotionFrame];

//load gif picture begin

NSURL *fileUrl = [[NSBundle mainBundle] URLForResource:[item objectForKey:@"cht"] withExtension:@"gif"];

_gifView = [[SvGifView alloc] initWithCenter:emotionFrame fileURL:fileUrl];

//NSLog(@"fileUrl:%@",fileUrl);

_gifView.backgroundColor = [UIColor clearColor];

_gifView.autoresizingMask = UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin;

[self addSubview:_gifView];

[_gifView startGif];

//load gif picture end

//更新列、行

colum ++;

if (colum % 7 == 0) {

row ++;

colum = 0;

}

if (row % 4 == 0) {

row = 0;

}

else{

//删除按钮

UIButton *deleteButton = [[UIButton alloc] initWithFrame:CGRectMake(emotionFrame.origin.x+item_width*5-10, emotionFrame.origin.y+item_height*4-5, 40, 29)];

[deleteButton setImage:[UIImage imageNamed:@"faceDelete"] forState:0];

[deleteButton addTarget:self action:@selector(deleteButtonPress:) forControlEvents:UIControlEventTouchUpInside];

[self addSubview:deleteButton];

//发送按钮

UIButton *sendButton = [[UIButton alloc] initWithFrame:CGRectMake(emotionFrame.origin.x+item_width*6-5, emotionFrame.origin.y+item_height*4, 30, 20)];

[sendButton setBackgroundImage:[UIImage imageNamed:@"blueLongBtn"] forState:0];

sendButton.titleLabel.font = [UIFont systemFontOfSize:13];

[sendButton setTitle:@"发送" forState:0];

[sendButton addTarget:self action:@selector(sendButtonPress:) forControlEvents:UIControlEventTouchUpInside];

[self addSubview:sendButton];

}

- (void)deleteButtonPress:(id)sender

{

if (self.deleteBtnPressBlock != nil) {

self.deleteBtnPressBlock();

}

- (void)sendButtonPress:(id)sender

{

if (self.sendBtnPressBlock != nil) {

self.sendBtnPressBlock();

}

emoticons.plist的配置如图

最后调试效果如图

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