iOS实现带遮罩的弹出选项卡

在我们日常开发的过程中难免会碰到一些选项的需求，下面是我针对我们该次需求做的一个小的Demo，闲话不多说了，上图片，上代码。

这样在我们选择上面一个Cell进行点击的时候，我会通过一个代理把数据传递到下面的页面，下面是代码

//
// LCAlertListView.h
// MeiMeiDu
//
// Created by 韩伟佳 on 16/4/6.
// Copyright © 2016年 LangCuang. All rights reserved.
//
 
#import <UIKit/UIKit.h>
@class LCAlertListView;
 
@protocol LCAlertListViewDelegate <NSObject>
 
-(void)alertListView:(LCAlertListView*)view didSelectedRow:(NSInteger)row;
 
@end
 
 
 
@interface LCAlertListView : UIView<UITableViewDataSource, UITableViewDelegate>
 
-(instancetype)initWithFrame:(CGRect)frame datas:(NSArray*)datas;
-(instancetype)initWithFrame:(CGRect)frame datas:(NSArray*)datas count:(NSArray*)counts;
@property(nonatomic, strong) id<LCAlertListViewDelegate> delegate;
@end

下面是具体实现

//
// LCAlertListView.m
// MeiMeiDu
//
// Created by 韩伟佳 on 16/4/6.
// Copyright © 2016年 LangCuang. All rights reserved.
//
 
#import "LCAlertListView.h"
#import "NoFreeCell.h"
 
static CGFloat TableViewHeight ;
 
@implementation LCAlertListView{
 UITableView* mTableView;
 NSArray* tableData;
 NSArray* visiableData;
 NSArray* visiableCount;
 UIButton* backgroundBtn;
}
 
-(instancetype)initWithFrame:(CGRect)frame datas:(NSArray*)datas{
 if (self = [super initWithFrame:frame]) {
  self.backgroundColor = [UIColor clearColor];
  backgroundBtn = [[UIButton alloc] initWithFrame:frame];
  backgroundBtn.backgroundColor = RGBA(88, 88, 88, 0.8);
  [backgroundBtn addTarget:self action:@selector(dismiss) forControlEvents:UIControlEventTouchUpInside];
  [self addSubview:backgroundBtn];
  tableData = datas;
  TableViewHeight = (datas.count + 1) * 44 + 20;
  mTableView = [[UITableView alloc] initWithFrame:CGRectMake(0, kScreenHeight, kScreenWidth, TableViewHeight) style:UITableViewStylePlain];
  [mTableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];
  mTableView.delegate = self;
  mTableView.dataSource = self;
  [self addSubview:mTableView];
  [UIView animateWithDuration:.25 animations:^{
   [mTableView setFrame:CGRectMake(0, kScreenHeight - TableViewHeight, kScreenWidth, TableViewHeight)];
  } completion:^(BOOL finished) {
   
  }];
 }
 return self;
}
-(instancetype)initWithFrame:(CGRect)frame datas:(NSArray*)datas count:(NSArray*)counts{
 if (self = [super initWithFrame:frame]) {
  self.backgroundColor = [UIColor clearColor];
  backgroundBtn = [[UIButton alloc] initWithFrame:frame];
  backgroundBtn.backgroundColor = RGBA(88, 88, 88, 0.8);
  [backgroundBtn addTarget:self action:@selector(dismiss) forControlEvents:UIControlEventTouchUpInside];
  [self addSubview:backgroundBtn];
  visiableData = datas;
  visiableCount = counts;
   TableViewHeight = (datas.count + 1) * 44 + 20;
  mTableView = [[UITableView alloc] initWithFrame:CGRectMake(0, kScreenHeight, kScreenWidth, TableViewHeight) style:UITableViewStylePlain];
  [mTableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];
  mTableView.delegate = self;
  mTableView.dataSource = self;
  [self addSubview:mTableView];
  [UIView animateWithDuration:.25 animations:^{
   [mTableView setFrame:CGRectMake(0, kScreenHeight - TableViewHeight, kScreenWidth, TableViewHeight)];
  } completion:^(BOOL finished) {
   
  }];
 }
 return self;
}
 
 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
 if(tableData.count > 0){
  return [tableData count];
 }else if (visiableCount.count > 0){
  return [visiableCount count];
 }
 return nil;
}
 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
 UITableViewCell* cell;
 NoFreeCell *doubleCell;
 if([tableData count] <= 3 && [tableData count] > 0){
  cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];
  cell.textLabel.text = tableData[indexPath.row];
  return cell;
 
 }else {
  static NSString *identifier = @"cell0";
  doubleCell =[tableView dequeueReusableCellWithIdentifier:identifier];
  if (doubleCell == nil){
   doubleCell= [[NoFreeCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
   doubleCell.visibleRoleLabel.text = visiableData[indexPath.row];
   doubleCell.showVisibleRoleLabel.text = visiableCount[indexPath.row];
  }
  return doubleCell;
 }
 
}
 
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
 NSInteger row = indexPath.row;
 [self dismiss:row];
}
 
-(void)dismiss:(NSInteger) row{
 if (_delegate && [_delegate respondsToSelector:@selector(alertListView:didSelectedRow:)]) {
  [_delegate alertListView:self didSelectedRow:row];
 }
 
 [UIView animateWithDuration:.15 animations:^{
  [mTableView setFrame:CGRectMake(0, kScreenHeight, kScreenWidth, TableViewHeight)];
 } completion:^(BOOL finished) {
  [self removeFromSuperview];
 }];
 
}
 
-(void)dismiss{
 [UIView animateWithDuration:.15 animations:^{
  [mTableView setFrame:CGRectMake(0, kScreenHeight, kScreenWidth, TableViewHeight)];
 } completion:^(BOOL finished) {
  [self removeFromSuperview];
 }];
}
@end								 
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