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我正在尝试使用我在此处找到的脚本在文本字段下实现自动完成功能:

http://www.raywenderlich.com/336/how-to-auto-complete-with-custom-values

但它会按应有的方式运行脚本,然后应用程序崩溃而没有给我一个反馈(只是 TUAppDelegate 中的 exc_bad_access)

不,我还有其他一些键盘方法,所以不知道它们是否冲突。

文本字段声明如下:

mytextfield_textfield = [[UITextField alloc] initWithFrame:CGRectMake(60, 57, 145, 20)];
mytextfield_textfield.borderStyle = UITextBorderStyleNone;
mytextfield_textfield.font =  [UIFont fontWithName:@"NeoSans" size:14];
mytextfield_textfield.placeholder = @"Enter something";
mytextfield_textfield.text = @"";
mytextfield_textfield.secureTextEntry = NO;
mytextfield_textfield.autocapitalizationType = UITextAutocapitalizationTypeNone;
mytextfield_textfield.autocorrectionType = UITextAutocorrectionTypeNo;
mytextfield_textfield.keyboardType = UIKeyboardTypeDefault;
mytextfield_textfield.returnKeyType = UIReturnKeyDone;
mytextfield_textfield.clearButtonMode = UITextFieldViewModeWhileEditing;
mytextfield_textfield.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;    
mytextfield_textfield.delegate = self;
[self.view addSubview:mytextfield_textfield];

然后下面的自动完成视图作为滚动视图而不是表格视图(另一个原因)。但它现在不使用。

然后我已经有了这些方法:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch * touch = [touches anyObject];
    if(touch.phase == UITouchPhaseBegan) {
        [mytextfield_textfield resignFirstResponder];
    }

    [mytextfield_textfield resignFirstResponder];
    myTableView.userInteractionEnabled = YES;
}

- (void)textFieldDidBeginEditing:(UITextField *)textField {
    myTableView.userInteractionEnabled = NO;
}

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    [mytextfield_textfield resignFirstResponder];
    myTableView.userInteractionEnabled = YES;
    [self performSelector:@selector(AddAction:) withObject:nil] ;
    return YES; 
}

现在我实现了自动完成:

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
    autocompleteView.hidden = NO;
    NSString *substring = [NSString stringWithString:textField.text];
    substring = [substring stringByReplacingCharactersInRange:range withString:string];
    [self searchAutocompleteEntriesWithSubstring:substring];
    myTableView.userInteractionEnabled = YES;
    NSLog(@"ok") ;
    return NO;
}

- (void)searchAutocompleteEntriesWithSubstring:(NSString *)substring {
    NSDictionary *dictionary = [[NSDictionary alloc] init ];
    NSString *path = [[NSBundle mainBundle] bundlePath] ;
    NSString *dictionary_path = [path stringByAppendingPathComponent:@"categorieslist2.plist"] ;
    dictionary = [NSDictionary dictionaryWithContentsOfFile:dictionary_path] ;

    for(id key in dictionary) {
        NSLog(@"%@",key) ;
    }
    [dictionary release] ;
}

它输出密钥并从 NSlog 返回 OK,但随后崩溃。知道为什么吗?

我只是在做 NSLog,因为我想弄清楚它为什么不起作用

4

2 回答 2

1

改变

   - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {

return YES;
}
于 2012-10-09T05:10:13.190 回答
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由于我不知道的原因,[字典发布]是罪魁祸首。任何人都可以解释为什么?同样的事情让我在应用程序的另一个部分崩溃了,我还发布了从 plist 读取的字典。将其注释掉解决了所有问题,即使我在 for 循环之后不使用字典

于 2012-10-09T21:52:18.770 回答