我需要帮助添加逻辑以获取静态表视图单元格部分索引。
我有一个带有 2 个部分的普通静态 UITableView,每个部分中有 2 个带有文本字段的单元格。
我实现了一个代码,用于将带有 prev/next/done 按钮的工具栏添加到键盘。
如果文本字段位于第 0 部分,则上一个/下一个工作,但是当点击下一步转到第 1 部分中的下一个文本字段时,应用程序崩溃。
我应该在哪里放置“if 条件”来检查文本字段所在的部分?
这是我的 .h 文件
#import <UIKit/UIKit.h>
@interface TextFieldTVCViewController : UITableViewController <UITextFieldDelegate, UIAlertViewDelegate>
@property(strong, nonatomic) IBOutlet UITextField *dep1TextField;
@property(strong, nonatomic) IBOutlet UITextField *arr1TextField;
@property(strong, nonatomic) IBOutlet UITextField *dep2TextField;
@property(strong, nonatomic) IBOutlet UITextField *arr2TextField;
@property(strong, nonatomic) IBOutlet UIToolbar *keyboardToolbar;
@property(strong, nonatomic) IBOutlet UIBarButtonItem *toolbarActionButton;
@property(strong, nonatomic) NSArray *textFields;
- (IBAction) closeKeyboard;
- (IBAction) nextField;
- (IBAction) prevField;
@end
这是我的 .m 文件
#import "TextFieldTVCViewController.h"
@interface TextFieldTVCViewController ()
@end
@implementation TextFieldTVCViewController
@synthesize dep1TextField, dep2TextField, arr1TextField, arr2TextField;
@synthesize keyboardToolbar, toolbarActionButton;
@synthesize textFields;
- (void)viewDidLoad
{
[super viewDidLoad];
textFields = [[NSArray alloc] initWithObjects:dep1TextField, arr1TextField, dep2TextField, arr2TextField, nil];
}
- (void) textFieldDidBeginEditing:(UITextField *)textField{
[textField setInputAccessoryView:keyboardToolbar];
for (int i=0; i<[textFields count]; i++) {
if ([textFields objectAtIndex:i]==textField) {
if (i==[textFields count]-1) {
toolbarActionButton.title =@"Done";
[toolbarActionButton setStyle:UIBarButtonItemStyleDone];
}
[self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:0] atScrollPosition:UITableViewScrollPositionMiddle animated:YES];
}
}
}
- (IBAction) closeKeyboard{
for(UITextField *t in textFields){
if ([t isEditing]) {
[t resignFirstResponder];
break;
}
}
}
- (IBAction) nextField{
for (int i=0; i<[textFields count]; i++) {
if ([[textFields objectAtIndex:i] isEditing] && i!=[textFields count]-1) {
[[textFields objectAtIndex:i+1] becomeFirstResponder];
if (i+1==[textFields count]-1) {
[toolbarActionButton setTitle:@"Done"];
[toolbarActionButton setStyle:UIBarButtonItemStyleDone];
}else {
[toolbarActionButton setTitle:@"Close"];
[toolbarActionButton setStyle:UIBarButtonItemStyleBordered];
}
[self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:i+1 inSection:0] atScrollPosition:UITableViewScrollPositionMiddle animated:YES];
break;
}
}
}
- (IBAction) prevField{
for (int i=0; i<[textFields count]; i++) {
if ([[textFields objectAtIndex:i] isEditing] && i!=0) {
[[textFields objectAtIndex:i-1] becomeFirstResponder];
[toolbarActionButton setTitle:@"Close"];
[self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:i-1 inSection:0] atScrollPosition:UITableViewScrollPositionMiddle animated:YES];
[toolbarActionButton setStyle:UIBarButtonItemStyleBordered];
break;
}
}
}
@end
我从中获取工具栏代码的站点:
http://idebuggerman.blogspot.com/2010/08/uitoolbar-for-keyboard-with.html?showComment=1371639814883
谢谢