实例介绍
【实例简介】
【实例截图】
【实例截图】
【核心代码】
//
// InfoCollectionViewController.m
// cookbook
//
// Created by 张逢阳 on 15/8/12.
// Copyright (c) 2015年 张逢阳. All rights reserved.
//
#import "InfoCollectionViewController.h"
#import "InfoCollectionViewCell.h"
#import "JHAPISDK.h"
#import "JHOpenidSupplier.h"
#import "ConstFile.h"
#import "InfoModel.h"
#import <UIKit/UIKit.h>
#import <MJRefresh.h>
#import "DetailTableViewController.h"
#import "Comm.h"
@interface InfoCollectionViewController ()<UISearchBarDelegate>
@property NSString* tagId;
@property NSMutableArray *dataSource;
@property UIImage * defaultImage;
@property BOOL isSearch;
@property NSString * searchText;
@end
@implementation InfoCollectionViewController
static NSString * const reuseIdentifier = @"InfoCollectionViewCell";
static int pn=0;
-(id)initWithTagId:(NSString* )tagId{
self= [super initWithCollectionViewLayout:[[UICollectionViewFlowLayout alloc]init]];
_tagId=tagId;
_isSearch=false;
return self;
}
-(id)initWithSearchText:(NSString *) searchText{
self=[super initWithCollectionViewLayout:[[UICollectionViewFlowLayout alloc]init]];
_searchText=searchText;
_isSearch=true;
return self;
}
- (void)viewDidLoad {
[super viewDidLoad];
//[self setTitle:@"返回"];
if (_isSearch) {
//导航栏用搜索框
CGRect frame=self.navigationController.navigationBar.frame;
frame.origin.y=0;
// frame.origin.x=self.navigationController.navigationItem.leftBarButtonItem.width 10;
UIView *titleView=[[UIView alloc]initWithFrame:frame];
[titleView setBackgroundColor:[UIColor clearColor]];
frame.size.width-=80;
UISearchBar *searchBar=[[UISearchBar alloc]initWithFrame:frame];
searchBar.backgroundColor=[UIColor clearColor];
[searchBar setTintColor:[UIColor grayColor]];
[searchBar setPlaceholder:@"菜谱搜索"];
[searchBar setText:_searchText];
//去除搜索框背景
for (UIView *view in searchBar.subviews) {
// for before iOS7.0
if ([view isKindOfClass:NSClassFromString(@"UISearchBarBackground")]) {
[view removeFromSuperview];
break;
}
// for later iOS7.0(include)
if ([view isKindOfClass:NSClassFromString(@"UIView")] && view.subviews.count > 0) {
[[view.subviews objectAtIndex:0] removeFromSuperview];
break;
}
}
searchBar.delegate=self;
searchBar.layer.cornerRadius=2;
//searchBar.layer.masksToBounds=YES;
[titleView addSubview:searchBar];
self.navigationItem.titleView=titleView;
}
_defaultImage=defaultImage;//[UIImage imageNamed:@"config"];
[self.collectionView setBackgroundColor:[UIColor whiteColor]];
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = NO;
// Register cell classes
[self.collectionView registerNib:[UINib nibWithNibName:reuseIdentifier bundle:nil] forCellWithReuseIdentifier:reuseIdentifier];
// Do any additional setup after loading the view.
[self setupRefresh];
}
-(void)setupRefresh{
// 下拉刷新
self.collectionView.header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
pn=0;
if (!_isSearch) {
[self getDataByTagId];
}
else{
[self getDataBySearchText];
}
[self.collectionView.header endRefreshing];
}];
[self.collectionView.header beginRefreshing];
// 上拉刷新
self.collectionView.footer = [MJRefreshAutoNormalFooter footerWithRefreshingBlock:^{
pn =30;
if(!_isSearch){
[self getDataByTagId];
}else{
[self getDataBySearchText];
}
// 结束刷新
[self.collectionView.footer endRefreshing];
}];
// 默认先隐藏footer
//self.collectionView.header.hidden = YES;
}
-(void)getDataBySearchText{
//调用数据接口
JHAPISDK *juheapi = [JHAPISDK shareJHAPISDK];
NSDictionary *parms=@{
@"menu":_searchText,
@"pn": [NSString stringWithFormat:@"%d",pn],
@"rn":@"30"
};
[juheapi executeWorkWithAPI:API_query
APIID:APPID
Parameters:parms
Method:Method_Get
Success:^(id responseObject){
int error_code = [[responseObject objectForKey:@"error_code"] intValue];
if (!error_code) {
// NSLog(@" %@", responseObject);
if (pn==0) {
_dataSource=[InfoModel objectArrayWithKeyValuesArray:[[responseObject objectForKey:@"result"] objectForKey:@"data"]];
}else{
NSArray* arry=[InfoModel objectArrayWithKeyValuesArray:[[responseObject objectForKey:@"result"] objectForKey:@"data"]];
[_dataSource addObjectsFromArray:arry];
}
[self.collectionView reloadData];
}else{
NSLog(@" %@", responseObject);
ALERT_MESSAGE(@"没有搜索到相关菜谱")
}
} Failure:^(NSError *error) {
NSLog(@"error: %@",error.description);
}];
}
-(void)getDataByTagId{
NSString *url=[NSString stringWithFormat:@"%@?cid=%@&pn=%d&rn=%d",API_queryByTag,_tagId,pn,30];
if( ![Comm urlContains:url]){
JHAPISDK *juheapi = [JHAPISDK shareJHAPISDK];
NSDictionary *parms=@{
@"cid":_tagId,
@"pn": [NSString stringWithFormat:@"%d",pn],
@"rn":@"30"
};
[juheapi executeWorkWithAPI:API_queryByTag
APIID:APPID
Parameters:parms
Method:Method_Get
Success:^(id responseObject){
int error_code = [[responseObject objectForKey:@"error_code"] intValue];
if (!error_code) {
if (pn==0) {
_dataSource=[InfoModel objectArrayWithKeyValuesArray:[[responseObject objectForKey:@"result"] objectForKey:@"data"]];
[ Comm setCacheWithUrl:url :_dataSource];
}else{
NSArray* arry=[InfoModel objectArrayWithKeyValuesArray:[[responseObject objectForKey:@"result"] objectForKey:@"data"]];
[ Comm setCacheWithUrl:url :arry];
[_dataSource addObjectsFromArray:arry];
}
[self.collectionView reloadData];
}else{
NSLog(@" %@", responseObject);
}
} Failure:^(NSError *error) {
NSLog(@"error: %@",error.description);
}];
}else{
NSLog(@"从缓存中取的数据 url=%@",url);
if (pn==0) {
_dataSource= [NSMutableArray arrayWithArray:[Comm getCacheWithUrl:url]];
}else{
[_dataSource addObjectsFromArray:[Comm getCacheWithUrl:url]];
}
[self.collectionView reloadData];
}
}
#pragma mark -UISearchBar
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar{
[searchBar resignFirstResponder];
_searchText=searchBar.text;
pn=0;
[self getDataBySearchText];
//记录历史记录
if ([SearchArray containsObject:searchBar.text]) {
NSUInteger index=[SearchArray indexOfObject:searchBar.text];
[SearchArray removeObjectAtIndex:index];
}
[SearchArray insertObject:searchBar.text atIndex:0];
[[NSUserDefaults standardUserDefaults] setObject:SearchArray forKey:@"search"];
}
/*
#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.
}
*/
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
{
return CGSizeMake(100, 110);
}
#pragma mark <UICollectionViewDataSource>
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
return 1;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
return _dataSource.count;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
InfoCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
// Configure the cell
InfoModel *model=(InfoModel*)[_dataSource objectAtIndex:indexPath.row];
[cell.img sd_setImageWithURL:[NSURL URLWithString:[model.albums objectAtIndex:0]] placeholderImage:_defaultImage];
cell.text.text=model.title;
return cell;
}
#pragma mark <UICollectionViewDelegate>
-(void)collectionView:(UICollectionView *)collectionView willDisplayCell:(UICollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath{
cell.layer.transform=CATransform3DMakeScale(0.1, 0.1, 1);
[UIView animateWithDuration:0.25 animations:^{
cell.layer.transform=CATransform3DMakeScale(1, 1, 1);
}];
}
-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
DetailTableViewController * vc=[[DetailTableViewController alloc]initWithInfoModel:(InfoModel*)[_dataSource objectAtIndex:indexPath.row]];
[self.navigationController pushViewController:vc animated:YES];
}
/*
// Uncomment this method to specify if the specified item should be highlighted during tracking
- (BOOL)collectionView:(UICollectionView *)collectionView shouldHighlightItemAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
*/
// Uncomment this method to specify if the specified item should be selected
- (BOOL)collectionView:(UICollectionView *)collectionView shouldSelectItemAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
/*
// Uncomment these methods to specify if an action menu should be displayed for the specified item, and react to actions performed on the item
- (BOOL)collectionView:(UICollectionView *)collectionView shouldShowMenuForItemAtIndexPath:(NSIndexPath *)indexPath {
return NO;
}
- (BOOL)collectionView:(UICollectionView *)collectionView canPerformAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender {
return NO;
}
- (void)collectionView:(UICollectionView *)collectionView performAction:(SEL)action forItemAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender {
}
*/
@end
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