//
// ViewController.h
// hhhh
//
// Created by bitcar on 12-7-10.
// Copyright (c) 2012年 bitcar . All rights reserved.
//
#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>
@interface ViewController : UIViewController
{
IBOutlet UITextField *passwordlength;
IBOutlet UITextField *password;
IBOutlet UISwitch *includeUpperCase;
IBOutlet UISwitch *includeLowerCase;
IBOutlet UISwitch *includeNumbers;
}
@property (nonatomic, retain) UITextField *passwordlength;
@property (nonatomic, retain) UITextField *password;
@property (nonatomic, retain) UISwitch *includeUpperCase;
@property (nonatomic, retain) UISwitch *includeLowerCase;
@property (nonatomic, retain) UISwitch *includeNumbers;
//-(IBAction)setPassword:(id)sender;
- (IBAction)onPasswordButtonClick:(id)sender;
@end
#import "ViewController.h"
@implementation ViewController
@synthesize passwordlength, password;
@synthesize includeLowerCase, includeNumbers, includeUpperCase;
#define RANDOM_SEED() srandom(time(NULL))
//定義隨機值，用最小值和最大值和隨機數來計算，返回整數值
#define RANDOM_INT(_MIN_, _MAX_) ((_MIN_) +random() % ((_MAX_ +1) - (_MIN_)))
//控件輸入返回判定方法
- (BOOL) textFieldShouldReturn: (UITextField*)textField
{
if(textField == password)
{
[password resignFirstResponder];//隱藏密碼文本框輸入的鍵盤
}
if(textField == passwordlength)
{
[passwordlength resignFirstResponder];//隱藏密碼長度文本框輸入的鍵盤
}
return YES;
}
//button方法，點擊的密碼顯示在文本框裏
//-(IBAction)setPassword:(id)sender
- (IBAction)onPasswordButtonClick:(id)sender
{
//輸入密碼長度
NSInteger iPasswordLength = [passwordlength.text intValue];
//打開字母小寫
BOOL bIncludeLowerCase = includeLowerCase.on;
//打開字母大寫
BOOL bIncludeUpperCase = includeUpperCase.on;
//打開數字
BOOL bIncludeNumbers = includeNumbers.on;
NSString *passwordText = @"";
//定義a到z字母
NSString *lowercaseChars = @"abcdefghijklmnopqrstuvwxyz";
//定義A到Z字母
NSString *uppercaseChars = @"ABCDEFGHIGKLMNOPQRSTUVWXYZ";
//定義數字
NSString *numbersChars = @"1234567890";
//隨機變量
RANDOM_SEED();
//字符對象爲空
NSString *passwordChars = @"";
//字母小寫的條件語句
if(bIncludeLowerCase)
{
passwordChars =
[NSString stringWithFormat:@"%@%@", passwordChars, lowercaseChars];
}
//字母大寫的條件語句
if (bIncludeUpperCase) {
passwordChars =
[NSString stringWithFormat:@"%@%@", passwordChars, uppercaseChars];
}
//字母爲數字的條件語句
if (bIncludeNumbers) {
passwordChars =
[NSString stringWithFormat:@"%@%@", passwordChars, numbersChars];
}
//數值從0開始，當數值小於密碼長度，取得數字字符，獲取的數據轉換爲文字格式
for (NSInteger i=0; i<iPasswordLength; i++)
{
int index = RANDOM_INT(0, [passwordChars length]-1);
NSRange range = NSMakeRange(index,1);
NSString *passwordChar = [passwordChars substringWithRange:range];
passwordText =
[NSString stringWithFormat:@"%@%@", passwordText, passwordChar];
}
password.text = @"";
password.text = passwordText;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void) dealloc
{
[passwordlength release];
[password release];
[includeNumbers release];
[includeLowerCase release];
[includeUpperCase release];
[super dealloc];
}
@end
當把所有字母大寫小寫和數字開啓時。
當只把字母大寫關閉時。
當把數字開啓時。
//-(IBAction)setPassword:(id)sender;
這次的編碼因爲系統誤認set,get的原因讓程序不能執行，我將記錄下並分析其中的原因。
當把“按扭生成密碼“這個方法寫成setPassword時，系統出現如下的警告：
原因是運行時程序將這個方法誤認爲set get。導致程序不能執行。
如果把它改成- (IBAction)onPasswordButtonClick:(id)sender;便沒問題了。
