動態產生 UIViewController (六)

接前一篇，因為有連續的UIViewController動態出現，但希望可一次回到最原始的Root UIViewController，在此需要借助NavigationBar的幫助，但是在使用時卻將navigationBar給隱藏起來。

以下是改良的實作

1. 在Storyboard上加入一個Navigation Bar

2. 修改mainViewController.m中動態UIViewController聯結的部分
- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
   
    [self setGoFirstViewButton];
   
    [self.navigationController setNavigationBarHidden:YES animated:NO];
   
}

- (void) activeView
{
    firstView = [[FirstViewController alloc] init];
   
    firstView.view.backgroundColor = [UIColor blueColor];
   
    [firstView setValue:@"FirstView" forKey:@"transferString"];
   
    NSNumber  *number = [[NSNumber alloc] initWithInt:1];
   
   
    [firstView setValue:number forKey:@"UIViewIndex"];
   
    //[self presentViewController:firstView animated:YES completion:^{}];
    [self.navigationController pushViewController:firstView animated:YES];
   
}



3. 將FirstViewController.m的動態UIViewController聯結的部分也需修改
- (void) goBackMainViewController
{
   
    //int number = [UIViewIndex integerValue];
   
    NSArray *viewControllers = self.navigationController.viewControllers;
    [self.navigationController popToViewController: [viewControllers objectAtIndex:0] animated: YES];
  
}

- (void) activeF2View
{
    f2View = [[FirstViewController alloc] init];
   
    f2View.view.backgroundColor = [UIColor orangeColor];
   
    [f2View setValue:@"F2View" forKey:@"transferString"];
   
    //NSNumber  *number = [[NSNumber alloc] initWithInt:([UIViewIndex integerValue]+1)];
   
    //[f2View setValue:number forKey:@"UIViewIndex"];
   
    //[self presentViewController:f2View animated:NO completion:^{}];
    [self.navigationController pushViewController:f2View animated:YES];
}

4. 結果就在於連續使用動態UIViewController後，可直接回到Root UIViewController

動態產生 UIViewController (五）

根據前一篇稍加修改，增加一個對FirstViewController自己的動態聯結，因此可以無限的動態UIViewController，而回到最頂層也是要一級一級的回去。

1. 只在FirstViewController.h加入一個FirstViewController的變數

@property (nonatomic) FirstViewController *f2View;


2. 在FirstViewController.m加入聯結自己的Button

@synthesize f2View;

- (void)setGoF2ViewButton  // 動態產生一個的Button
{
    UIButton *startSayStoryButton = [UIButton  buttonWithType:UIButtonTypeRoundedRect];
    //動態產生一個RoundedRect 形式的  Button
   
    startSayStoryButton.frame = CGRectMake(0,0, 200, 100); // 大小
   
    //_helloActionButton.center = self.view.center;
   
    [startSayStoryButton setCenter:CGPointMake(500, 300)];//位置放在x=500, y=300的位置
   
   
    [startSayStoryButton addTarget:self action:@selector(activeF2View) forControlEvents:UIControlEventTouchUpInside];
    //設定Button動作呼叫的function在 onHelloActionButton,方式為按下
   
    //_helloActionButton.= @"Action Button";
    [startSayStoryButton setTitle:@"To F2View" forState:UIControlStateNormal];
    //將動態Button上放置Action Button這兩個字
   
    [self.view addSubview:startSayStoryButton];
    //將動態Button放到View上展出
   
}

- (void) activeF2View
{
    f2View = [[FirstViewController alloc] init];
   
    f2View.view.backgroundColor = [UIColor orangeColor];
   
    [f2View setValue:@"F2View" forKey:@"transferString"];
   
    [self presentViewController:f2View animated:YES completion:^{}];
   
}

3. 結果圖

動態產生 UIViewController (四)

連續使用兩層的動態UIViewController


1. 開啓新的專案

2.新增兩個UIViewController的Class檔

3. 首先在mainViewController.h加入變數
#import <UIKit/UIKit.h>
#import "FirstViewController.h"
#import "SecondViewController.h"

@interface mainViewController : UIViewController

@property (nonatomic) FirstViewController *firstView;

@end



4. 在mainViewController.m加入到下一級的程式碼
#import "mainViewController.h"

@interface mainViewController ()

@end

@implementation mainViewController

@synthesize firstView;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
   
    [self setGoFirstViewButton];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)setGoFirstViewButton  // 動態產生一個的Button
{
    UIButton *startSayStoryButton = [UIButton  buttonWithType:UIButtonTypeRoundedRect];
    //動態產生一個RoundedRect 形式的  Button
   
    startSayStoryButton.frame = CGRectMake(0,0, 100, 100); // 大小
   
    //_helloActionButton.center = self.view.center;
   
    [startSayStoryButton setCenter:CGPointMake(300, 300)];//位置放在x=150, y=50的位置
   
   
    [startSayStoryButton addTarget:self action:@selector(activeView) forControlEvents:UIControlEventTouchUpInside];
    //設定Button動作呼叫的function在 onHelloActionButton,方式為按下
   
    //_helloActionButton.= @"Action Button";
    [startSayStoryButton setTitle:@"To FirstView" forState:UIControlStateNormal];
    //將動態Button上放置Action Button這兩個字
   
    [self.view addSubview:startSayStoryButton];
    //將動態Button放到View上展出
   
}

- (void) activeView
{
    firstView = [[FirstViewController alloc] init];
   
    firstView.view.backgroundColor = [UIColor blueColor];
   
    [firstView setValue:@"FirstView" forKey:@"transferString"];
   
    [self presentViewController:firstView animated:YES completion:^{}];
   
}
@end


5. 在FirstViewController.h加入變數
#import <UIKit/UIKit.h>
#import "SecondViewController.h"

@interface FirstViewController : UIViewController
{
    NSString *transferString;
}

@property (nonatomic) SecondViewController *secondView;

@end


6. 在FirstViewController.m加入程式碼
#import "FirstViewController.h"

@interface FirstViewController ()

@end

@implementation FirstViewController

@synthesize secondView;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
   
    [self setGoBackButton];
    [self setGoSecondViewButton];
   
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void) setGoBackButton
{
    //NSLog(@"%@", transferString);
   
    //self.view.backgroundColor = [UIColor yellowColor];
   
    UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [aButton setFrame:CGRectMake(10, 10, 200, 50)];
    aButton.backgroundColor = [UIColor  redColor];
    //[aButton setTitle:@"Go Back" forState:UIControlStateNormal];
   
    [aButton setTitle:@"回去前一級" forState:UIControlStateNormal];
   
   
    [aButton addTarget:self action:@selector(goBackMainViewController) forControlEvents:UIControlEventTouchUpInside];
   
    [self.view addSubview:aButton];
   
}

- (void) goBackMainViewController
{
   
    [self dismissViewControllerAnimated:YES completion:^{}];
}

- (void)setGoSecondViewButton  // 動態產生一個的Button
{
    UIButton *startSayStoryButton = [UIButton  buttonWithType:UIButtonTypeRoundedRect];
    //動態產生一個RoundedRect 形式的  Button
   
    startSayStoryButton.frame = CGRectMake(0,0, 200, 100); // 大小
   
    //_helloActionButton.center = self.view.center;
   
    [startSayStoryButton setCenter:CGPointMake(300, 300)];//位置放在x=150, y=50的位置
   
   
    [startSayStoryButton addTarget:self action:@selector(activeView) forControlEvents:UIControlEventTouchUpInside];
    //設定Button動作呼叫的function在 onHelloActionButton,方式為按下
   
    //_helloActionButton.= @"Action Button";
    [startSayStoryButton setTitle:@"To SecondView" forState:UIControlStateNormal];
    //將動態Button上放置Action Button這兩個字
   
    [self.view addSubview:startSayStoryButton];
    //將動態Button放到View上展出
   
}

- (void) activeView
{
    secondView = [[SecondViewController alloc] init];
   
    secondView.view.backgroundColor = [UIColor greenColor];
   
    [secondView setValue:@"SecondView" forKey:@"transferString"];
   
    [self presentViewController:secondView animated:YES completion:^{}];
   
}

@end

7. 在SecondViewController.h加入變數
#import <UIKit/UIKit.h>

@interface SecondViewController : UIViewController
{
    NSString *transferString;
}
@end

8.在SecondViewController.m加入程式碼
#import "SecondViewController.h"

@interface SecondViewController ()

@end

@implementation SecondViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
   
    [self setGoBackButton];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void) setGoBackButton
{
    //NSLog(@"%@", transferString);
   
    //self.view.backgroundColor = [UIColor yellowColor];
   
    UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [aButton setFrame:CGRectMake(10, 10, 200, 50)];
    aButton.backgroundColor = [UIColor  redColor];
    //[aButton setTitle:@"Go Back" forState:UIControlStateNormal];
   
    [aButton setTitle:@"回去前一級" forState:UIControlStateNormal];
   
   
    [aButton addTarget:self action:@selector(goBackMainViewController) forControlEvents:UIControlEventTouchUpInside];
   
    [self.view addSubview:aButton];
   
}

- (void) goBackMainViewController
{
   
    [self dismissViewControllerAnimated:YES completion:^{}];
}

@end


9. 結果圖

笑笑圖(四）

笑笑圖(三）

笑笑圖(二）

笑笑圖(一）

生活需要點笑料。

IOS遊戲資料儲存的方法(一）

此處參考了【黑米GameDev街区】 原文链接: http://www.himigame.com/iphone-cocos2d/513.html
的程式碼。總共有四種方法

 1.  NSKeyedArchiver（加密形式）
 2.  NSUserDefaults
 3.  Write写入方式
 4.  SQLite3

但是iOS程序设计中常用到的一些数据持久化方法還有：Binary files, Property List,  NSCoder,  Core Data, etc.


第一種方法的相關資料

本來 NSMutableArray 及 NSMutableDictionary 都有 writeToFile: 功能：

NSString *fullPath = [GameViewController getFileWithPath:PLAYER_DATA_FILE];
[playerArray writeToFile:fullPath atomically:NO];

但可惜不支援自定義的物件。因此使用NSKeyedArchiver的方法。
NSKeyedArchiver类中的archiveRootObject:toFile:方法将数据对象存储到磁盘上，如：

NSDictionary *glossary = [...];
[NSKeyedArchiver archiveRootObject:glossary toFile:@"file"];

通过NSKeyedUnarchiver类中的unArchiveObjectWithFile:方法将创建的归档文件读入执行的程序中，如：

NSDictionary *glossary = [NSKeyedUnarchiver unArchiveObjectWithFile:@"file"];

实现NSKeyedArchiver类和NSKeyedUnarchiver类操作的类必须遵守<NSCoding>协议，实现
encodeWithCoder:    // 编码方法
initWithCoder:         // 解码方法
PS : 对于基本的Objective-C类(NSString, NSArray, NSDictionary, NSSet, NSDate, NSNumber, NSData)则使用
encodeObject:forKey:编码方法和decodeObject:forKey:解码方法：



基本參考程式碼
方法是為自定義的物件建立：

- (id)initWithCoder:(NSCoder *)decoder;
- (void)encodeWithCoder:(NSCoder *)encoder;

這兩個分別是 initWithCoder: 還原數據及 encodeWithCoder: 儲存數據。示範如下：

- (id)initWithCoder:(NSCoder *)decoder  {
 self = [super init];

 level = [decoder decodeIntForKey:PLAYER_LEVEL];
 hp = [decoder decodeIntForKey:PLAYER_HP];
 mp = [decoder decodeIntForKey:PLAYER_MP];

 return self;
}

- (void)encodeWithCoder:(NSCoder *)encoder  {
 [encoder encodeInt:level forKey:PLAYER_LEVEL];
 [encoder encodeInt:hp forKey:PLAYER_HP];
 [encoder encodeInt:mp forKey:PLAYER_MP];
}

本次實作，將只用基本方法來做，先不使用太複雜的方法。

以下是我再將第一種的程式碼重新改寫的實作，

1.  開啓一個新的專案

2. 在Storyboard加上兩個button

3. 加入兩個圖檔來做資料顯示

4. 在mainViewController.h加入Array變數
#import <UIKit/UIKit.h>

@interface mainViewController : UIViewController

@property (nonatomic) NSMutableArray *saveArray;

@end

5. 在mainViewController.m加入程式碼
#import "mainViewController.h"

@interface mainViewController ()

@end

@implementation mainViewController

@synthesize saveArray;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
   
    saveArray = [[NSMutableArray alloc] init];
   
    [self builtImageView:1001];
    [self builtImageView:1002];
   
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
- (IBAction)saveAndClean:(id)sender {
   
    [self removeSubView];
   
    NSString *Path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
    NSString *filename = [Path stringByAppendingPathComponent:@"saveDatatest.test"];
   
    [NSKeyedArchiver archiveRootObject:saveArray toFile:filename];
   
    [saveArray removeAllObjects];

}
- (IBAction)readAndRestore:(id)sender {
   
    NSString *Path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
    NSString *filename = [Path stringByAppendingPathComponent:@"saveDatatest.test"];
   
    saveArray = [NSKeyedUnarchiver unarchiveObjectWithFile: filename];
   
    int count = [saveArray count];
   
    for (int i=0;i<count ;i++)
    {
        UIImageView *temp = [saveArray objectAtIndex:i];
       
        [self.view addSubview:temp];
       
    }
   
    [saveArray removeAllObjects];

}

- (void) builtImageView:(int) picNumber
{
    UIImageView *tt = [[UIImageView alloc] initWithFrame:CGRectMake(120 + (picNumber%100)*100, 320 , 100, 100)];
   
    [tt setImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d.png",picNumber]]];
   
    tt.tag = picNumber;
   
    [self.view addSubview:tt];
   
 }

- (void) removeSubView //:(NSInteger *)tagNum
{
    for(UIView *subview in [self.view subviews]) {
        if([subview isKindOfClass:[UIImageView class]]) {
            //if (tagNum == subview.tag) {
           
            [saveArray addObject:subview];
           
            [subview removeFromSuperview];
           
           
        } else {
            // Do nothing - not a UIButton or subclass instance
        }
    }
}

@end


5. 結果顯示，先執行左邊，就會存到App的Document目錄下，然後再用右邊讀取並回復原狀。

 6.暫存目錄位置，因為App的暫存區為代碼，其下的Documents有儲存的檔案。

iOS App第二次被Apple退件

在前一篇所說被退件後，順便大幅增修內容，因此原本的截圖與App的內容稍稍不同，這樣也被Apple找出來。看來Apple的審查機制還是蠻嚴格的，因此不可存有僥倖的心理，所以寫下這篇來警惕自己。

現在只好也將截圖重新做一遍，再一次上傳了。只不過，這次不用再上傳App了，看來只有截圖有問題而已。

使用TextField實作文字輸入（三）

沿用前一篇的專案，加入一個動態設定的TextField，實作中會用到UITextFieldDelegate，因此也必須瞭解UITextFieldDelegate的使用。此處可參考UITextFieldDelegate Protocol Reference。

一般我們通常會用到三個method
1. -(void)textFieldDidBeginEditing:(UITextField *)textField;  
//当开始点击textField会调用的方法    

2. -(void)textFieldDidEndEditing:(UITextField *)textField; 
//当textField编辑结束时调用的方法

3. -(BOOL)textFieldShouldReturn:(UITextField *)textField{  //按下Done按钮的调用方法，我们让键盘消失   

但本實作暫時只用到 textFieldShouldReturn，以下是實作。


1. 在TextFieldTestViewController.h加入delegate
 #import <UIKit/UIKit.h>

@interface TextFieldTestViewController : UIViewController <UITextFieldDelegate>
{
    UITextField  *textInput;
}
@property (weak, nonatomic) IBOutlet UILabel *MyLabel;
@property (weak, nonatomic) IBOutlet UIButton *MyButton;
@property (weak, nonatomic) IBOutlet UITextField *MyTextField;

@end


2. 在TextFieldTestViewController.m加入程式碼
- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
   
    [self setTextField];
   
}

- (IBAction)onBackgroundHit:(id)sender {
    [MyTextField resignFirstResponder];
   
    [textInput  resignFirstResponder];
}

- (void) setTextField
{
    textInput = [[UITextField alloc] init];
   
    [textInput setFrame:CGRectMake(120, 50, 100, 50)];
   
    textInput.borderStyle = UITextBorderStyleRoundedRect;
    textInput.font = [UIFont systemFontOfSize:15];
    textInput.placeholder = @"enter text";
    textInput.autocorrectionType = UITextAutocorrectionTypeNo;
    textInput.keyboardType = UIKeyboardTypeDefault;
    textInput.returnKeyType = UIReturnKeyDone;
    textInput.clearButtonMode = UITextFieldViewModeWhileEditing;
    textInput.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
   
    textInput.delegate = self;
   
    [self.view addSubview:textInput];
   
}

- (void)textFieldDidEndEditing:(UITextField *)textField {

}

-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
   
    [textField resignFirstResponder];
   
    MyLabel.text = textField.text;
   
    return YES;
   
}


@end



3.結果圖

UIToolBar的基本使用(五）

延續前一篇的實驗，改變ToolBar上 Button的文字。

實作上，直接在dynamicToolBarViewController.m上加入程式碼即可

-(void)showText1
{
   
    NSString *text = @"測試一";
   
    showLabel.text = text;
   
    [self changeBarItemTitle:0];
}

-(void)showText2
{
   
    NSString *text = @"測試二";
   
    showLabel.text = text;
   
    [self changeBarItemTitle:2];
}

-(void)showText3
{
   
    NSString *text = @"測試三";
   
    showLabel.text = text;
   
    [self changeBarItemTitle:4];
}

- (void) changeBarItemTitle:(int) item_num
{
    NSMutableArray *newItems = [myToolBar.items mutableCopy];
   
    UIBarButtonItem *old = [newItems objectAtIndex:item_num];
   
    [old setTitle:@"已經按過了"];
   
    [newItems  replaceObjectAtIndex:item_num withObject:old];
   
    myToolBar.items = newItems;
   
}


結果顯示