1.仿QQ弹出框
1.1用到的知识点
1.1.1如何调整弹出框的大小(这里弹出的也是控制器)
这里已经有讲解过http://blog.csdn.net/iostiannan/article/details/51131431
1.1.2如何使QQ弹出框的文字与弹出框Frame自适应
```
此方法,会返回一个由UIKit子类调用后得到的Size ,此size即是完美适应调用此方法的UIKit子类的size
得到此size后, 可以调用 调整弹框大小的方法 **preferredContentSize**配合使用
```//重置本控制器的大小
-(CGSize)preferredContentSize{
if (self.popoverPresentationController != nil) {
CGSize tempSize ;
tempSize.height = self.view.frame.size.height;
tempSize.width = 155;
CGSize size = [_tableVIew sizeThatFits:tempSize]; //返回一个完美适应tableView的大小的 size
return size;
}else{
return [super preferredContentSize];
}
}
代码如下
viewController.m
#import "ViewController.h"
#import "PopViewController.h"
@interface ViewController ()<UIPopoverPresentationControllerDelegate>
{
PopViewController *_popVC;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.navigationItem.title = @"QQ";
self.view.backgroundColor = [UIColor whiteColor];
UIButton *btnR = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btnR.frame = CGRectMake(0, 0, 50, 50);
btnR.backgroundColor = [UIColor clearColor];
[btnR setTitle:@"+" forState:UIControlStateNormal];
[btnR addTarget:self action:@selector(popView) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *imte = [[UIBarButtonItem alloc] initWithCustomView:btnR];
self.navigationItem.rightBarButtonItem = imte;
}
-(void)popView{
_popVC = [[PopViewController alloc] init];
_popVC.modalPresentationStyle = UIModalPresentationPopover;
//设置依附的按钮
_popVC.popoverPresentationController.barButtonItem = self.navigationItem.rightBarButtonItem;
//可以指示小箭头颜色
_popVC.popoverPresentationController.backgroundColor = [UIColor whiteColor];
//content尺寸
_popVC.preferredContentSize = CGSizeMake(400, 400);
//pop方向
_popVC.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp;
//delegate
_popVC.popoverPresentationController.delegate = self;
[self presentViewController:_popVC animated:YES completion:nil];
}
//代理方法 ,点击即可dismiss掉每次init产生的PopViewController
-(UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller{
return UIModalPresentationNone;
}
弹出框类.m
<div class="se-preview-section-delimiter"></div>
#import "PopViewController.h"
@interface PopViewController ()<UITableViewDataSource,UITableViewDelegate>
{
UITableView *_tableVIew;
NSArray *_dataArray;
NSArray *_arr1;
NSArray *_arr2;
}
@end
@implementation PopViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor whiteColor];
_arr1 = @[@"扫一扫",@"加好友",@"创建讨论组",@"发送到电脑",@"面对面快传",@"收钱"];
_arr2 = @[@"right_menu_QR",@"right_menu_addFri",@"right_menu_multichat",@"right_menu_sendFile",@"right_menu_facetoface",@"right_menu_payMoney"];
_tableVIew = [[UITableView alloc] initWithFrame:self.view.bounds];
_tableVIew.delegate = self;
_tableVIew.dataSource = self;
_tableVIew.scrollEnabled = YES;
_tableVIew.backgroundColor = [UIColor whiteColor];
[self.view addSubview:_tableVIew];
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return _arr2.count;
}
-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *str = @"cellID";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:str];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:str];
}
cell.textLabel.text = _arr1[indexPath.row];
cell.imageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"%@",_arr2[indexPath.row]]];
return cell;
}
//重置本控制器的大小
-(CGSize)preferredContentSize{
if (self.popoverPresentationController != nil) {
CGSize tempSize ;
tempSize.height = self.view.frame.size.height;
tempSize.width = 155;
CGSize size = [_tableVIew sizeThatFits:tempSize]; //返回一个完美适应tableView的大小的 size
return size;
}else{
return [super preferredContentSize];
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
GitHUb===>>https://github.com/tianNanYiHao/MyTestDemo.git