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IOS项目-处女作
作者：佚名 IOS开发编辑：admin 更新时间：2022-07-23
我最近一直都有在看关于IOS项目的知识，今天也总算是迎来了我的第一个IOS项目。不巧这个项目并不是从头开始开发，而是在基础上维护并添加一些模块。
噗~不管怎么样，还是来分析分析一下源码吧~我这里首先看到的是AppDelegate_ipad.m下的didFinishLaunchingWithOptions方法，这个方法顾名思义应该是应用启动加载完成后所执行的一个方法。
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
//[NSUserDefaults standardUserDefaults] 获取用户的一些配置信息
if([[[NSUserDefaults standardUserDefaults] stringForKey:@"AddresstheText"] length]==0){
[[NSUserDefaults standardUserDefaults] setObject:@"http://xxxx.com" forKey:@"AddresstheText"];
[[NSUserDefaults standardUserDefaults] synchronize];
}
[[NSUserDefaults standardUserDefaults] setObject:@"wangmin" forKey:@"userNameValue"];
[[NSUserDefaults standardUserDefaults] setObject:@"1111" forKey:@"useridValue"];
[[NSUserDefaults standardUserDefaults] synchronize];
FFADSViewController * controller = [[[FFADSViewController alloc] init] autorelease];
//initWithRootViewController的参数API是这样说的，大概就是什么controller都可以，但不能是tabbarcontroller
//The root view controller that is pushed on the stack with no animation. It cannot be an instance of tab bar controller.
UINavigationController * nav = [[UINavigationController alloc] initWithRootViewController:controller];
//不要显示navigationcontroller的bar
[nav setNavigationBarHidden:YES];
//UIDevice可以获取当前设备信息
if ( [[UIDevice currentDevice].systemVersion floatValue] < 6.0){
[self.window addSubview:nav.view];
}else{
self.window.rootViewController = nav;
}
[self.window makeKeyAndVisible];
return YES;
}
接下来稍微的扫一下盲，NSUserDefualts standardUserDefualts是什么呢？
NSUserDefaults standardUserDefaults用来记录一下永久保留的数据非常方便，不需要读写文件，而是保留到一个NSDictionary字典里，由系统保存到文件里，系统会保存到该应用下的/Library/PReferences/gongcheng.plist文件中。需要注意的是如果程序意外退出，NSUserDefaultsstandardUserDefaults数据不会被系统写入到该文件，不过可以使用［[NSUserDefaultsstandardUserDefaults] synchronize］命令直接同步到文件里，来避免数据的丢失。接下来我们来看FFADSViewController~!往下走!GO!
#import "FFADSViewController.h"
#import "FFLrcController.h"
@implementation FFADSViewController
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:YES];
[self.navigationController setNavigationBarHidden:YES animated:NO];
}
//这个页就相当于app进入login页面之前，需要缓冲一些数据会在这个页面停留1-2秒种
- (void)loadView {
[super loadView];
CGRect frame = CGRectMake(0, 0, 768, 1024);
UIImage * image = [UIImage imageNamed:@"ipadguodu"];
UIImageView * imageView = [[UIImageView alloc] initWithImage:image];
CGRect imageFrame = frame;
imageView.frame = imageFrame;
imageView.tag = 100;
//addSubview 添加子视图
[self.view addSubview:imageView];
[imageView release];
//延迟2秒钟后执行toController
[self performSelector:@selector(toController) withObject:nil afterDelay:2];
}
-(void)toController{
FFLrcController *publish = [[FFLrcController alloc]init];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:publish];
//presentModalViewController：弹出视图
[self presentModalViewController:nav animated:NO];
[publish release];
}
- (void)dealloc {
[super dealloc];
}
@end
这个controller很简单，继续往下走FFLrcController估计就是登录页面了，真是不容易啊!走了好多路才到了登录界面。登录页面首先执行的是loadView事件
注：remember、login、personnumber、passWord、state等属性都已经在FFLrcController.h中定义
- (void)loadView {
[super loadView];//隐藏导航bar
[self.navigationController setNavigationBarHidden:YES animated:NO];
//设置背景颜色
self.view.backgroundColor=[UIColor colorWithRed:235/255.0 green:232/255.0 blue:222/255.0 alpha:1];
//label，设置相应的字体颜色背景等等信息
UILabel *remember=[[UILabel alloc]initWithFrame:CGRectMake(100, 733, 150, 30)];
remember.textColor=[UIColor colorWithRed:189/255.0 green:183/255.0 blue:167/255.0 alpha:1];
remember.text=@"记住登录状态";
[self.view addSubview:remember];
[remember release];
//登陆
login = [[UITextField alloc] initWithFrame:CGRectMake(345, 452, 300, 40)];
login.backgroundColor = [UIColor clearColor];
login.borderStyle = UITextBorderStyleRoundedRect;
login.borderStyle=UITextBorderStyleNone;
//“委托的意思不就是自己的任务交给其他人去做么”
//对象.delegate=self的意思就是对象的任务交给self去做 对象！=self
login.delegate = self;
login.keyboardType = UIKeyboardTypeDefault; // use the default type input method (entire keyboard)
login.placeholder=@"姓名";
login.returnKeyType = UIReturnKeyDone;
[self.view addSubview:login];
personnumber = [[UITextField alloc] initWithFrame:CGRectMake(345, 545, 300, 40)];
personnumber.backgroundColor = [UIColor clearColor];
personnumber.borderStyle = UITextBorderStyleRoundedRect;
personnumber.borderStyle=UITextBorderStyleNone;
personnumber.delegate = self;
personnumber.keyboardType = UIKeyboardTypeDefault; // use the default type input method (entire keyboard)
personnumber.placeholder=@"身份证号码";
personnumber.returnKeyType = UIReturnKeyDone;
[self.view addSubview:personnumber];
//密码
password = [[UITextField alloc] initWithFrame:CGRectMake(345, 636, 300, 40)];
password.secureTextEntry=YES;
password.backgroundColor = [UIColor clearColor];
password.borderStyle = UITextBorderStyleRoundedRect;
password.delegate = self;
password.borderStyle=UITextBorderStyleNone;
password.keyboardType = UIKeyboardTypeDefault; // use the default type input method (entire keyboard)
password.placeholder=@"密码";
password.returnKeyType = UIReturnKeyDone;
[self.view addSubview:password];//记住状态
state = [UIButton buttonWithType:UIButtonTypeCustom];
state.frame =CGRectMake(50, 720, 52, 52);
//UIControlEventTouchDown事件后会转跳到remember方法中做处理
[state addTarget:self action:@selector(remember) forControlEvents:UIControlEventTouchDown];
[state setBackgroundImage:[UIImage imageNamed:@"ipadcheckLogin"] forState:UIControlStateNormal];
[self.view addSubview:state];
//登陆按钮
UIButton *check = [UIButton buttonWithType:UIButtonTypeCustom];
check.frame =CGRectMake(350, 725, 319, 72);
[check.titleLabel setFont:[UIFont boldSystemFontOfSize:18]];
//UIControlEventTouchDown事件后会执行goHome
[check addTarget:self action:@selector(goHome) forControlEvents:UIControlEventTouchDown];
[check setBackgroundImage:[UIImage imageNamed:@"ipadlogin_btn"] forState:UIControlStateNormal];
[self.view addSubview:check];
//他这里condition方法编写的是假如有记住密码则将配置文件里的信息读取到UITextField当中
[self condition];
}
FFLrcController.m ---> goHome事件
- (void)goHome {
//交出第一响应的身份，可能是回收键盘操作
[login resignFirstResponder];
[personnumber resignFirstResponder];
[password resignFirstResponder];
//SVProgressHUD 是一个第三方的控件，是一个弹出提示层，用来提示网络加载或提示对错
[SVProgressHUD showWithStatus:@"数据加载中..." maskType:SVProgressHUDMaskTypeClear];
//不重复，只调用一次。timer运行一次就会自动停止运行
timer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(loginTO) userInfo:nil repeats:NO];
}
FFLrcController.m ---> loginTO事件
-(void)loginTO{
//设置URL 这里相当于 http://xxxx.com/CheckLogin/index/type/name/001/IDcardNO/331004xxxxxxxx/password/001/uuid/e1e2ed3sgfw2/macaddress/192.168.1.1/checkword/?p=ui
//总之这个根据服务器具体所需要的url来配置
NSString *urlString=[NSString stringWithFormat:@"%@/CheckLogin/index/type//name/%@/IDcardNO/%@/password/%@/uuid/%@/macaddress/%@/checkword/?p=ui"
,@"http://xxxx.com",login.text,personnumber.text,password.text,[self getUUID],[self getMacAddress]];
//NSLog(@"urlString %@",urlString);
NSURL *url=[NSURL URLWithString:urlString];
//ASIHTTPRequest类库中的ASIFormDataRequest是实现HTTP协议中的处理POST表单的很好的类库。
ASIFormDataRequest *request = [[ASIFormDataRequest alloc] initWithURL:url];
[request setDelegate:self];
//成功后调用dataFetchComplete
[request setDidFinishSelector:@selector(dataFetchComplete:)];
//失败后调用dataFail
[request setDidFailSelector:@selector(dataFail:)];
[request setTimeOutSeconds:60];
[[SEAOperationQueue mainQueue] addOperation:request];
[request release];
}
FFLrcController.m ---> dataFetchComplete事件
- (void)dataFetchComplete:(ASIHTTPRequest *)request
{
//隐藏进度条框
[SVProgressHUD dismiss];
//从服务器中得到的数据是二进制的
NSData * data = [request responseData];
if (data) {
//从服务器得到返回的数据转UTF-8，这里为什么不是json，竟然带有html的
NSString *myString = [[NSString alloc] initWithBytes:[data bytes] length:[data length] encoding:NSUTF8StringEncoding];
//这里过滤掉一些标签如：<script></script>等
//使用NSString的stringByReplacingOccurrencesOfString:@"要过滤的" withString:@"替换成的"方法
//以下省略9行过滤代码
if ([myString isEqualToString:@"您的身份证号码有误！"]) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"身份证号码输入错误" delegate:nil cancelButtonTitle:@"确认" otherButtonTitles:nil, nil];
[alert show];
[alert release];
return;
}else if ([myString isEqualToString:@"用户名或密码输入错误！"]) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"登陆信息输入错误" delegate:nil cancelButtonTitle:@"确认" otherButtonTitles:nil, nil];
[alert show];
[alert release];
return;
}else if ([myString hasprefix:@"/userid"]) {
myString=[myString stringByReplacingOccurrencesOfString:@"/userid/" withString:@""];
if (flag) {
[[NSUserDefaults standardUserDefaults] setObject:@"true" forKey:@"flag"];
[self writeUser];
}else{
[[NSUserDefaults standardUserDefaults] setObject:@"false" forKey:@"flag"];
}
//记录登陆时间写入配置文件
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"YYYY-MM-dd"];
NSString *timestamp = [formatter stringFromDate:[NSDate date]];
NSString *countTime=@"上次登陆:";
countTime=[countTime stringByAppendingString:timestamp];
[[NSUserDefaults standardUserDefaults] setObject:countTime forKey:@"loginTime"];
[formatter release];
//这里登陆成功后，写入一些信息到配置文件。这里省去一些代码
FFFFSwitchViewController *controller = [[FFFFSwitchViewController alloc]init];
controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self.navigationController pushViewController:controller animated:YES];
[controller release];
}
}
}
可以看到接下来就是FFFFSwitchViewController
FFFFSwitchViewController.h文件
#import <UIKit/UIKit.h>
//这个TransparendValueDelegate干嘛用暂时不清楚
@protocol TransparendValueDelegate;
//首先这个类继承了UITabBarController，且实现了UITabBarControllerDelegate和UINavigationControllerDelegate两个接口
@interface FFFFSwitchViewController : UITabBarController<UITabBarControllerDelegate,UINavigationControllerDelegate> {
}
- (void)makeTabBarHidden:(BOOL)hide;
-(void)hiddenTabButton;
-(void)displayTabButton;
@end
FFFFSwitchViewController.m ---> init构造函数方法
-(id)init {
if(self= [super init]){
[self makeTabBarHidden:YES];
//定义一个能够存放很多controller的数组
NSMutableArray *controllers = [[NSMutableArray alloc] initWithCapacity:5];
//首页controller
FFHomePageViewController *payout=[[FFHomePageViewController alloc]init];
payout.title=@"首页";
UINavigationController *nav1 = [[UINavigationController alloc]initWithRootViewController:payout];
nav1.navigationBar.tintColor =[UIColor colorWithRed:0.161 green:0.584 blue:0.839 alpha:1];
[nav1 setNavigationBarHidden:YES animated:NO];
//设置controller
FFshezhi *shouce=[[FFshezhi alloc]init];
shouce.title=@"设置";
UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:shouce];
nav2.navigationBar.tintColor =[UIColor colorWithRed:0.161 green:0.584 blue:0.839 alpha:1];
[nav2 setNavigationBarHidden:YES animated:NO];
//视频controller
FFVideo *conver=[[FFVideo alloc]init];
conver.title=@"视频";
UINavigationController *nav3 = [[UINavigationController alloc]initWithRootViewController:conver];
nav3.navigationBar.tintColor =[UIColor colorWithRed:0.161 green:0.584 blue:0.839 alpha:1];
[nav3 setNavigationBarHidden:YES animated:NO];
//拍照controller
FFCamera *shoucang=[[FFCamera alloc]init];
shoucang.title=@"拍照";
UINavigationController *nav4 = [[UINavigationController alloc]initWithRootViewController:shoucang];
nav4.navigationBar.tintColor =[UIColor colorWithRed:0.161 green:0.584 blue:0.839 alpha:1];
[nav4 setNavigationBarHidden:YES animated:NO];
nav1.navigationBar.barStyle = UIBarStyleDefault;
nav2.navigationBar.barStyle = UIBarStyleDefault;
nav3.navigationBar.barStyle = UIBarStyleDefault;
nav4.navigationBar.barStyle = UIBarStyleDefault;
payout.tabBarItem.image = [UIImage imageNamed:@"sysytem"];
nav2.tabBarItem.image = [UIImage imageNamed:@"setting"];
nav3.tabBarItem.image = [UIImage imageNamed:@"camera"];
nav4.tabBarItem.image = [UIImage imageNamed:@"vido"];
[controllers addObject:nav1];
[controllers addObject:nav3];
[controllers addObject:nav4];
[controllers addObject:nav2];
//因为本身就是tabcontroller的子类
self.viewControllers = controllers;
self.delegate = self;
[payout release];
[nav1 release];
[shouce release];
[nav2 release];
[conver release];
[nav3 release];
[shoucang release];
[nav4 release];
float width=self.view.bounds.size.width/4;
//初始化界面
for (int i = 0; i<4; i++) {
//初始化底部的按钮
UIButton * choiceButton= [UIButton buttonWithType:UIButtonTypeCustom];
choiceButton.frame = CGRectMake(width * i, 1024-90, width, 90);
//tag设置成10111
choiceButton.tag = i+10111;
//给按钮添加点击事件
//点击事件无非就是点击后改变按钮的背景图片
[choiceButton addTarget:self action:@selector(clickButton:) forControlEvents:UIControlEventTouchDown];
NSString *imagename=[NSString stringWithFormat:@"IpadTabbar%d",i+1];
[choiceButton setImage:[UIImage imageNamed:imagename] forState:UIControlStateNormal];
[choiceButton setBackgroundColor:[UIColor clearColor]];
[self.view addSubview:choiceButton];
}
//得到当前第一个button的引用
UIButton *button=(UIButton *)[self.view viewWithTag:10111];
//第一个为选中状态，所以给他设置别的背景图片
[button setImage:[UIImage imageNamed:@"IpadTabbarBack1"] forState:UIControlStateNormal];
self.selectedIndex = 0;
}
return self;
}
从FFFFSwitchViewController.m中可以看出他是一个类似iPad主菜单界面。它是一个tab页分别容纳了四个controller，分别是FFHomePageViewControlle、FFshezhi、FFCamera、FFVideo。
顾名思义FFHomePageViewControlle应该所有controller当中最中心的一个controller。
进入FFHomePageViewControlle.h
#import <UIKit/UIKit.h>
#import "FFHomeView.h"
#import "FFFFWebViewController.h"
//FFHomePageViewController继承UIViewController，并实现了FFHomeViewControllerDelegate，UITableViewDelegate，
//和UITableViewDataSource三个接口。其中FFHomeViewControllerDelegate为自定义接口
@interface FFHomePageViewController : UIViewController <FFHomeViewControllerDelegate,UITableViewDelegate,UITableViewDataSource>{
NSMutableArray *bookData;
}
@end
在看FFHomePageViewControlle.m之前先去探究下FFHomeViewControllerDelegate接口
FFHomeView.h文件
#import <UIKit/UIKit.h>
@class FFHomeView;
//接口申明
@protocol FFHomeViewControllerDelegate<NSObject>
@required
-(void)getPerSonProduct:(FFHomeView *)controller;
@end
@interface FFHomeView : UIView {
NSArray *bookArray;
NSMutableDictionary *perDict;
//这个类包含这个接口
id<FFHomeViewControllerDelegate>delegate;
}
@property(nonatomic,retain)NSMutableDictionary *perDict;
@property(nonatomic,retain)NSArray *bookArray;
//接口变量delegate作为类FFHomeView的属性
@property(nonatomic,assign)id<FFHomeViewControllerDelegate>delegate;
@end
FFHomeView.m文件
#import "FFHomeView.h"
@implementation FFHomeView
@synthesize delegate;
@synthesize bookArray;
@synthesize perDict;
- (id)initWithFrame:(CGRect)frame {
if ((self = [super initWithFrame:frame])) {
self.backgroundColor=[UIColor clearColor];
}
return self;
}
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
NSInteger i= 0;
NSUInteger count = 4;
CGFloat width = self.frame.size.width / count;
for (NSDictionary *dict in bookArray) {
NSString *keypic=[dict objectForKey:@"image"];
UIImage *image=[UIImage imageNamed:keypic];
if (!image) {
image = [UIImage imageNamed:@"defaultimage.png"];
}
if (image) {
CGRect frameImage=CGRectMake(172 *i+70,10, 112, 112);
[[UIColor whiteColor]set];
[[UIColor colorWithRed:221/255.0 green:221/255.0 blue:221/255.0 alpha:1]set]; [[UIColor clearColor] set];
[image drawInRect:CGRectInset(frameImage,0,0)];
} [[UIColor colorWithRed:116/255.0 green:109/255.0 blue:88/255.0 alpha:1]set];
NSString *china=[NSString stringWithFormat:@"%@",[dict objectForKey:@"name"]];
[china drawInRect:CGRectMake(172 *i+30,125, width, 30) withFont:[UIFont boldSystemFontOfSize:15]
lineBreakMode:UILineBreakModeTailTruncation alignment:UITextAlignmentCenter];
i++;
}
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
CGPoint pt = [[touches anyObject] locationInView:self];
NSUInteger width = self.bounds.size.width / 4;
NSUInteger count = 0;
for (NSMutableDictionary * dict in bookArray) {
CGRect rect = CGRectMake(width * count++, 0,width, self.bounds.size.height);
if (CGRectContainsPoint(rect, pt)) {
//NSLog(@"dict %@",dict);
perDict=dict;
if(delegate && [delegate respondsToSelector:@selector(getPerSonProduct:)]){
[delegate getPerSonProduct:self];
return;
}
}
}
}
- (void)dealloc {
[super dealloc];
}
@end
看到这里我已经完全晕掉了，完全不知这个是用来干什么的？算了还是回到原来的路去吧，之前我们是看到了FFHomePageViewController.h。FFHomePageViewController.h是实现了FFHomeViewControllerDelegate接口，所以我们才会看到上述两个文件的。那现在我们来看下FFHomePageViewController.m的构造函数吧~
FFHomePageViewController.m ---> init构造函数（从这个构造函数可以发现bookData是用来存储bookMenu.plist加载到内存中的键值对的）
-(id)init {
if(self= [super init]){
NSString *contentPath = [NSString stringByAppendDocumentDirectory:@"bookMenu.plist"];
bookData=[[NSMutableArray alloc] initWithContentsOfFile:contentPath];
}
return self;
}
FFHomePageViewController.m ---> loadView方法
//每次访问UIViewController的view(比如controller.view、self.view)而且view为nil，loadView方法就会被调用。
- (void)loadView {
[super loadView];
//指定view的背景颜色
self.view.backgroundColor=[UIColor colorWithRed:235/255.0 green:232/255.0 blue:222/255.0 alpha:1];
//Logo图片
UIImageView *upImage=[[UIImageView alloc] initWithFrame:CGRectMake(0,0, 768, 88)];
upImage.tag=51;
[upImage setImage:[UIImage imageNamed:@"Ipadup"]];
[self.view addSubview:upImage];
[upImage release];
//TableView放一些菜单图标
UITableView *tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 88, 768, 830-5) style:UITableViewStylePlain];
[tableView setDelegate:self];
[tableView setDataSource:self];
[tableView setTag:111110];
tableView.separatorStyle=UITableViewCellSeparatorStyleNone;
tableView.separatorColor=[UIColor clearColor];
[tableView setBackgroundColor:[UIColor clearColor]];
[self.view addSubview:tableView];
[tableView release];
}
话说FFHomePageViewController.h是实现UITableViewDataSource接口和UITableViewDelegate接口的，又通过[tableView setDelegate:self]，[tableView setDataSource:self]语句，表示只要在FFHomePageViewController.m当前类重写那些方法就可以了。
UITableViewDataSource，主要为UITableView提 供显示用的数据(UITableViewCell)，指定UITableViewCell支持的编辑操作类型(insert，delete和 reordering)，并根据用户的操作进行相应的数据更新操作，如果数据没有更具操作进行正确的更新，可能会导致显示异常，甚至crush。
UITableViewDelegate，主要提供一些可选的方法，用来控制tableView的选择、指定section的头和尾的显示以及协助完成cell的删除和排序等功能。
接下来看下渲染每一个cell的方法
FFHomePageViewController.m ---> - (UITableViewCell *)tableView:(UITableView *)tableView1 cellForRowAtIndexPath:(NSIndexPath *)indexPath
//初始化每一行会调用该方法
- (UITableViewCell *)tableView:(UITableView *)tableView1 cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = nil;
static NSString *kCellTextField1 = @"Cell";
cell = [tableView1 dequeueReusableCellWithIdentifier:kCellTextField1];
if (cell==nil) {
if (indexPath.section==0) {
//初始化Image
UIImage * bgImage = nil;
bgImage = [[UIImage imageNamed:@"shuguiback.png"] stretchableImageWithLeftCapWidth:0 topCapHeight:34];
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kCellTextField1] autorelease];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
cell.accessoryType=UITableViewCellAccessoryNone;
//自定义的FFHomeView类构造函数返回自己本身
FFHomeView *drawFriends=[[FFHomeView alloc]initWithFrame:CGRectMake(0, 0,320, 160)];
[drawFriends setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight];
[drawFriends setTag:1];
//FFHomeView的delegate就是FFHomeViewControllerDelegate
//而当前类就是实现FFHomeViewControllerDelegate接口的。就是把FFHomeView中要做的事，交给当前类
[drawFriends setDelegate:self];
[drawFriends setUserInteractionEnabled:YES];
[cell.contentView addSubview:drawFriends];
[drawFriends release];
cell.backgroundView=[[UIImageView alloc]initWithImage:bgImage];
}
}
//这里还没怎么看的明白
if (indexPath.section==0) {
if (bookData) {
NSUInteger count = [bookData count];
NSUInteger length = indexPath.row * ROWCALUE_NUMBER + ROWCALUE_NUMBER > count?count - indexPath.row * ROWCALUE_NUMBER:ROWCALUE_NUMBER;
NSArray * array = [bookData subarrayWithRange:NSMakeRange(indexPath.row * ROWCALUE_NUMBER , length)];
if (array) {
FFHomeView * view1 = (FFHomeView * )[cell.contentView viewWithTag:1];
view1.bookArray=array;
//setNeedsDisplay会调用自动调用drawRect方法
[view1 setNeedsDisplay];
}
}
}
return cell;
}
看了这个方法后差不多也明白了之前的FFHomeView.m文件做的是什么事情了，按照java的理解方式是这样的。就相当于在FFHomeView类中写了一个事件接口FFHomeViewControllerDelegate，在该类的touchesEnded事件函数中回调FFHomeViewControllerDelegate接口里的getPerSonProduct方法。而getPerSonProduct方法真正的实现而在FFHomePageViewController类当中。
然后调用顺序就是：
当我们触发菜单栏的图标--->调用FFHomeView里的touchesEnded事件--->再调用到FFHomePageViewController里的getPerSonProduct事件
FFHomePageViewController.m ---> getPerSonProduct方法
-(void)getPerSonProduct:(FFHomeView *)controllerRenqi{
//在FFHomeView内部调用该函数的时候把自己本身传入，而自己本身包含perDict键值对
//<dict><key>url</key><string>/index.php/cms/item-hjindex</string></dict>
NSString *stringURL=[controllerRenqi.perDict objectForKey:@"url"];
if ([stringURL isEqualToString:@"exit"]) {
//若退出，显示登陆界面
FFLrcController *publish = [[FFLrcController alloc]init];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:publish];
[self presentModalViewController:nav animated:NO];
//每次使用完controller都释放掉
[publish release];
return;
}
NSString *createurl=[controllerRenqi.perDict objectForKey:@"createurl"];
//WebViewController
FFFFWebViewController * web=[[FFFFWebViewController alloc] init:stringURL createURL:createurl];
NSString *name=[controllerRenqi.perDict objectForKey:@"name"];
web.TT=name;
web.hidesBottomBarWhenPushed=YES;
[self.navigationController pushViewController:web animated:YES];
[web release];
}
看完上面这些代码后，发现接下来的视图传入的是WebViewController，参数是url。我想这个一定是传说中的app中加个webview。大部分操作可能会由webview来实现。
另外我想你会跟我一样有这样的一些问题，createurl是什么？干什么用？不急不急，接下来来看看FFFFWebViewController 是怎么实现的。
#import <UIKit/UIKit.h>
#import "FFFFSwitchViewController.h"
//发现这个类是继承UIViewController，并实现了UIWebViewDelegate接口
@interface FFFFWebViewController : UIViewController <UIWebViewDelegate>{
//浏览器
UIWebView * webView;
//UIActivityIndicatorView实例提供轻型视图，这些视图显示一个标准的旋转进度轮。
UIActivityIndicatorView *activityIndicator;
NSString *stringUrl;
NSString *createUrl;
NSString *TT;
}
@property(nonatomic,retain)NSString *TT;
@property(nonatomic,retain)NSString *stringUrl;
@property(nonatomic,retain)NSString *createUrl;
-(id)init:(NSString *)string createURL:(NSString*)curl;
//-(void)loadWebView:(NSString*)string;
@end
FFFFWebViewControlle.h主要就是实现了 UIWebViewDelegate委托接口，UIWebViewDelegate主要有下面几个方法。
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType; //加载前
- (void)webViewDidFinishLoad:(UIWebView *)webView;//请求完毕(加载数据完毕)时调⽤这个方法
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error;//请求错误时调用这个方法 FFFFWebViewController.m ---> init构造函数方法
//第一个参数为：要显示的地址
-(id)init:(NSString *)string createURL:(NSString*)curl{
if(self=[super init]){
self.stringUrl=[[NSString stringWithFormat:@"%@%@", @"http://xxxxx/hjjd", string]
stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
self.createUrl = curl;
}
return self;
}
FFFFWebViewController.m ---> loadView方法
- (void)loadView {
[super loadView];
self.view.backgroundColor=[UIColor colorWithRed:235/255.0 green:232/255.0 blue:222/255.0 alpha:1];
//存放logo
UIImageView *uv=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 768, 60)];
uv.tag=1;
[uv setImage:[UIImage imageNamed:@"Ipadnavigation"]];
[self.view addSubview:uv];
[uv release];
//返回按钮
UIButton *check = [UIButton buttonWithType:UIButtonTypeCustom];
check.tag=2;
check.frame =CGRectMake(10, 22, 48, 30);
[check.titleLabel setFont:[UIFont boldSystemFontOfSize:14]];
[check setTitle:@"返回" forState:UIControlStateNormal];
//点击后出发goBack事件
[check addTarget:self action:@selector(goBack) forControlEvents:UIControlEventTouchDown];
[check setBackgroundImage:[UIImage imageNamed:@"IpadnClose"] forState:UIControlStateNormal];
[self.view addSubview:check];
//新建按钮
if(![self.createUrl isEqualToString:@"null"]){
UIButton *upButton = [UIButton buttonWithType:UIButtonTypeCustom];
upButton.tag=3;
upButton.frame =CGRectMake(768-58, 22, 48, 30);
[upButton setTitle:@"新建" forState:UIControlStateNormal];
[upButton.titleLabel setFont:[UIFont boldSystemFontOfSize:14]];
//点击后触发resum事件
[upButton addTarget:self action:@selector(resum) forControlEvents:UIControlEventTouchDown];
[upButton setBackgroundImage:[UIImage imageNamed:@"IpadnClose"] forState:UIControlStateNormal];
[self.view addSubview:upButton];
}
//标题
UILabel *titleLabel=[[UILabel alloc]initWithFrame:CGRectMake(0,23,768,30)];
titleLabel.tag=4;
[titleLabel setFont:[UIFont boldSystemFontOfSize:20]];
[titleLabel setTextAlignment:UITextAlignmentCenter];
titleLabel.lineBreakMode=UILineBreakModeWordWrap;
titleLabel.numberOfLines=0;
titleLabel.text =TT;
[titleLabel setTextColor:[UIColor whiteColor]];
[titleLabel setBackgroundColor:[UIColor clearColor]];
[self.view addSubview:titleLabel];
[titleLabel release];
webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 60, 768, 1024-20-88-88+60)];
webView.scalesPageToFit = YES;
//设置delegate为本身，因为该类实现UIWebViewDelegate接口
webView.delegate = self;
webView.backgroundColor = [UIColor clearColor];
[self.view addSubview:webView];
activityIndicator = [[UIActivityIndicatorView alloc]initWithFrame:CGRectMake(0, 15, 50, 50)];
[activityIndicator setCenter:CGPointMake(768/2,1024/2)];
[activityIndicator setActivityIndicatorViewStyle:UIActivityIndicatorViewStyleGray];
[self.view addSubview:activityIndicator];
//加载链接地址
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:self.stringUrl]]];
}
FFFFWebViewController.m ---> resum事件
-(void)resum{
FFcreateViewContonroller *matchset=[[FFcreateViewContonroller alloc]init:self.createUrl];
matchset.TT=[NSString stringWithFormat:@"新建%@",TT];
[self presentModalViewController:matchset animated:YES];
[matchset release];
}
FFFFWebViewController.m ---> goBack事件
- (void)goBack {
//假如浏览器可以goBack就先goBack
if([webView canGoBack]){
[webView goBack];
}else{
//否则弹出controller
[self.navigationController popViewControllerAnimated:YES];
}
}
从上面的代码就可以看出createurl是用来做什么的了，假如我们点击右上角的新建按钮，createurl可以让webview转跳到自己定义的页面当中。另外假如自己需要controller之间的转跳，则只要在新建点击后判断createurl的内容，就可以任意转跳到自己的地方了。到这里差不多可以看懂原作者的app设计思路是怎么样的了。这里点击新建后会进入 FFcreateViewContonroller。FFcreateViewContonroller其实与FFFFWebViewController非常的相似，也就是嵌入一个webview。
源代码已经分析的差不多了，稍微的总结那么一下。 这个项目的顺序是这样的：AppDelegate_iPad--->FFADSViewController--->FFLrcController --->FFFFSwitchViewControoler(FFHomePageViewController,FFCamera,FFVideo,FFshezhi) 由FFHomePageViewController出发：FFHomePageViewController--->FFFFWebViewController--->FFcreateViewContonroller
假如要添加某个新功能的话，就可以新建一个controller，然后在resum方法中添加一个判断引导到新建controller就可以了。若需要在新建的controller下面再进入新的controller其实也无妨，popViewController后FFFFWebViewController始终还会在那边的。若新建按钮需要对webview中的内容进行重定向，那就更简单了，直接在resum方法中调用webview的loadRequest方法，填入需要转跳的url就可以了。
到这里文章已经写完了，写的不好希望大家指出！谢谢大家观看~
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