封装的一个方法
.h文件中
#import <UIKit/UIKit.h>
@protocol LrdOutputViewDelegate <NSObject>
@required
- (void)didSelectedAtIndexPath:(NSIndexPath *)indexPath;
@end
typedef void(^dismissWithOperation)();
typedef NS_ENUM(NSUInteger, LrdOutputViewDirection) {
kLrdOutputViewDirectionLeft = 1,
kLrdOutputViewDirectionRight
};
@interface LrdOutputView : UIView
@property (nonatomic, weak) id<LrdOutputViewDelegate> delegate;
@property (nonatomic, strong) dismissWithOperation dismissOperation;
//初始化方法
//传入参数：模型数组，弹出原点，宽度，高度（每个cell的高度）
- (instancetype)initWithDataArray:(NSArray *)dataArray
origin:(CGPoint)origin
width:(CGFloat)width
height:(CGFloat)height
direction:(LrdOutputViewDirection)direction;
//弹出
- (void)pop;
//消失
- (void)dismiss;
@end
@interface LrdCellModel : NSObject
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *imageName;
- (instancetype)initWithTitle:(NSString *)title imageName:(NSString *)imageName;
.m文件中
宏定义
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
#define SCREEN_HEIGHT [UIScreen mainScreen].bounds.size.height
#define CellLineEdgeInsets UIEdgeInsetsMake(0, 10, 0, 10)
#define LeftToView 10.f
#define TopToView 10.f
在@interface里面声明属性
最后在@implementation中实现方法
- (instancetype)initWithDataArray:(NSArray *)dataArray
origin:(CGPoint)origin
width:(CGFloat)width
height:(CGFloat)height
direction:(LrdOutputViewDirection)direction {
if (self = [super initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT)]) {
//背景色为clearColor
self.backgroundColor = [UIColor clearColor];
self.origin = origin;
self.height = height;
self.width = width;
self.direction = direction;
self.dataArray = dataArray;
if (height <= 0) {
height = 44;
}
if (direction == kLrdOutputViewDirectionLeft) {
self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(origin.x, origin.y, width, height * _dataArray.count) style:UITableViewStylePlain];
}else {
self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(origin.x, origin.y, -width, height * _dataArray.count) style:UITableViewStylePlain];
}
_tableView.separatorColor = [UIColor colorWithWhite:0.3 alpha:1];
_tableView.backgroundColor = [UIColor colorWithWhite:0.2 alpha:1];
_tableView.bounces = NO;
_tableView.layer.cornerRadius = 2;
_tableView.delegate = self;
_tableView.dataSource = self;
//注册cell
[_tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];
[self addSubview:self.tableView];
//cell线条
if ([self.tableView respondsToSelector:@selector(setSeparatorInset:)]) {
[self.tableView setSeparatorInset:CellLineEdgeInsets];
}
if ([self.tableView respondsToSelector:@selector(setLayoutMargins:)]) {
[self.tableView setLayoutMargins:CellLineEdgeInsets];
}
}
return self;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.dataArray.count;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
return self.height;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
cell.textLabel.textColor = [UIColor whiteColor];
cell.textLabel.font = [UIFont systemFontOfSize:15];
cell.backgroundColor = [UIColor clearColor];
//取出模型
LrdCellModel *model = [self.dataArray objectAtIndex:indexPath.row];
cell.textLabel.text = model.title;
cell.imageView.image = [UIImage imageNamed:model.imageName];
cell.selectedBackgroundView = [[UIView alloc] initWithFrame:cell.frame];
cell.selectedBackgroundView.backgroundColor = [UIColor blackColor];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
//通知代理处理点击事件
if ([self.delegate respondsToSelector:@selector(didSelectedAtIndexPath:)]) {
[self.delegate didSelectedAtIndexPath:indexPath];
}
[tableView deselectRowAtIndexPath:indexPath animated:YES];
[self dismiss];
}
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
if ([cell respondsToSelector:@selector(setSeparatorInset:)]) {
[cell setSeparatorInset:CellLineEdgeInsets];
}
if ([cell respondsToSelector:@selector(setLayoutMargins:)]) {
[cell setLayoutMargins:CellLineEdgeInsets];
}
}
//画出尖尖
- (void)drawRect:(CGRect)rect {
//拿到当前视图准备好的画板
CGContextRef context = UIGraphicsGetCurrentContext();
//利用path进行绘制三角形
CGContextBeginPath(context);//标记
if (self.direction == kLrdOutputViewDirectionLeft) {
CGFloat startX = self.origin.x + 20;
CGFloat startY = self.origin.y;
CGContextMoveToPoint(context, startX, startY);//设置起点
CGContextAddLineToPoint(context, startX + 5, startY - 5);
CGContextAddLineToPoint(context, startX + 10, startY);
}else {
CGFloat startX = self.origin.x - 20;
CGFloat startY = self.origin.y;
CGContextMoveToPoint(context, startX, startY);//设置起点
CGContextAddLineToPoint(context, startX + 5, startY - 5);
CGContextAddLineToPoint(context, startX + 10, startY);
}
CGContextClosePath(context);//路径结束标志，不写默认封闭
[self.tableView.backgroundColor setFill]; //设置填充色
[self.tableView.backgroundColor setStroke];
CGContextDrawPath(context, kCGPathFillStroke);//绘制路径path;
}
- (void)pop {
UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];
[keyWindow addSubview:self];
//动画效果弹出
self.alpha = 0;
CGRect frame = self.tableView.frame;
self.tableView.frame = CGRectMake(self.origin.x, self.origin.y, 0, 0);
[UIView animateWithDuration:0.2 animations:^{
self.alpha = 1;
self.tableView.frame = frame;
}];
}
- (void)dismiss {
//动画效果淡出
[UIView animateWithDuration:0.2 animations:^{
self.alpha = 0;
self.tableView.frame = CGRectMake(self.origin.x, self.origin.y, 0, 0);
} completion:^(BOOL finished) {
if (finished) {
[self removeFromSuperview];
if (self.dismissOperation) {
self.dismissOperation();
}
}
}];
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
UITouch *touch = [touches anyObject];
if (![touch.view isEqual:self.tableView]) {
[self dismiss];
}
}
@end
#pragma mark - LrdCellModel
@implementation LrdCellModel
- (instancetype)initWithTitle:(NSString *)title imageName:(NSString *)imageName {
LrdCellModel *model = [[LrdCellModel alloc] init];
model.title = title;
model.imageName = imageName;
return model;
}