目标：绘制UI完成登录功能
登录界面如下：
1.新建项目 项目名称：RapidEngineDemo
得到项目如下：
2 对所得到的项目做些修改
1）删掉 MainWindow.xib
2）编辑 RapidEngineDemo-Info.plist 删掉标签
<key>NSMainNibFile</key>
<string>MainWindow</string>
3）修改main.m
#import <UIKit/UIKit.h>
int main(int argc, char *argv[]) {
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
int retVal = UIApplicationMain(argc, argv, nil, @"RapidEngineDemoAppDelegate");
[pool release];
return retVal;
}
成为这个样子
#import <UIKit/UIKit.h>
@interface RapidEngineDemoAppDelegate : NSObject <UIApplicationDelegate> {
UIWindow* window;
UITabBarController* tabController;
}
@property (nonatomic, retain) UITabBarController* tabController;
@end
#import "RapidEngineDemoAppDelegate.h"
#import "RootViewController.h"
#import "CustomUINavigationController.h"
@implementation RapidEngineDemoAppDelegate
@synthesize tabController;
#pragma mark -
#pragma mark Application lifecycle
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
// Add the navigation controller's view to the window and display.
window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
tabController = [[CustomUINavigationController alloc] init];
[tabController setViewControllers:
[NSArray arrayWithObjects:
[[[UINavigationController alloc] initWithRootViewController:[[[RootViewController alloc] initWithTabBarItemTitle:@"RapidDemo" iconName:@"Messages.png" tag:0] autorelease]] autorelease],
nil]];
[window addSubview:[tabController view]];
[window makeKeyAndVisible];
return YES;
}
#import <UIKit/UIKit.h>
@interface RootViewController : UITableViewController {
}
- (id)initWithTabBarItemTitle:(NSString *)title iconName:(NSString *)iconName tag:(NSInteger)tag;
@end
RootViewController.m 这里要标注一下 initWithStyle:UITableViewStyleGrouped是设置UITable的样式
- (id)initWithTabBarItemTitle:(NSString *)title iconName:(NSString *)iconName tag:(NSInteger)tag{
if (self = [super initWithStyle:UITableViewStyleGrouped]) {
self.title = title;
self.tableView.scrollEnabled = NO;
UIImage *icon = [UIImage imageNamed:iconName];
UITabBarItem *item = [[UITabBarItem alloc] initWithTitle:title image:icon tag:tag];
self.tabBarItem = item;
[item release];
}
return self;
}
// Customize the number of sections in the table view.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 2;
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
//AppDelegate* appData = [[UIApplication sharedApplication] delegate];
if ([indexPath row] == 0) {
CellIdentifier = @"UserNameCell";
cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
cell = [[[CellWithTextField alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
((CellWithTextField *)cell).lbl.text = @"昵称:";
((CellWithTextField *)cell).lbl.backgroundColor = [UIColor clearColor];
((CellWithTextField *)cell).lbl.textColor = [UIColor colorWithRed:102.0/255.0 green:102.0/255.0 blue:102.0/255.0 alpha:1.0];
}else if ([indexPath row] == 1) {
CellIdentifier = @"PasswordCell";
cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
cell = [[[CellWithTextField alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
((CellWithTextField *)cell).lbl.text = @"密码:";
((CellWithTextField *)cell).lbl.backgroundColor = [UIColor clearColor];
((CellWithTextField *)cell).lbl.textColor = [UIColor colorWithRed:102.0/255.0 green:102.0/255.0 blue:102.0/255.0 alpha:1.0];
}
return cell;
}
#import <Foundation/Foundation.h>
@interface CellWithTextField : UITableViewCell {
UILabel *lbl;
UITextField *txt;
}
@property(nonatomic,retain)UILabel *lbl;
@property(nonatomic,retain)UITextField *txt;
@end
#import "CellWithTextField.h"
@implementation CellWithTextField
@synthesize lbl,txt;
- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
// Initialization code
self.selectionStyle = UITableViewCellSelectionStyleNone;
self.lbl = [[UILabel alloc] initWithFrame:CGRectZero];
[self.contentView addSubview:self.lbl];
[self.lbl release];
self.txt = [[UITextField alloc] initWithFrame:CGRectZero];
self.txt.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
[self.contentView addSubview:self.txt];
[self.txt release];
}
return self;
}
-(void)layoutSubviews{
[super layoutSubviews];
float inset = 5.0;
CGRect bounds = [[self contentView] bounds];
float h = bounds.size.height;
float w = bounds.size.width;
CGSize label_text_size = [self.lbl.text sizeWithFont:self.lbl.font];
float labelWidth = label_text_size.width;
CGRect innerFrame = CGRectMake(inset, inset, labelWidth, h-inset*2);
[lbl setFrame:innerFrame];
innerFrame.origin.x += innerFrame.size.width+inset;
innerFrame.size.width = w - (labelWidth+inset*3);
[txt setFrame:innerFrame];
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
- (void)dealloc {
[lbl release];
[txt release];
[super dealloc];
}
@end