我在Xcode 4.2中创建了一个xib文件,我正在寻找将它带到选项卡式应用程序,但我一直在尝试,我对Xcode有点新,编码所以这就是为什么我需要你的帮助我有我的下面的代码,但有一些小错误,但我希望你很多帮助我可能是一个标签应用程序...告诉我无论如何做什么。下面是一个视频供你查看,以防我没有解释它是正确的(这是我的视频,我只针对这个问题http://www.youtube.com/watch?v=e7R5_kGClM0希望视频帮助,但更重要的是你可以帮助我。
有.h但是
中没有错误#import <UIKit/UIKit.h>
@interface myview : UIViewController <UITableViewDelegate, UITableViewDataSource, UIPickerViewDelegate, UIPickerViewDataSource>
@property (strong, nonatomic) IBOutlet UITableView* tableView;
@property (strong, nonatomic) IBOutlet UIPickerView* pickerView;
@property (strong, nonatomic) NSMutableArray* tableData;
@property (strong, nonatomic) NSMutableArray* pickerData;
@end
这是.m,但我会将其分解
#import "myview.h"
@implementation myview
@synthesize tableView, pickerView, tableData, pickerData;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
这是 - (void)viewDidLoad];等等。
- (void)viewDidUnload
{
[super viewDidUnload];
tableView.delegate = self;
tableView.dataSource = self;
pickerView.delegate = self;
pickerView.dataSource = self;
tableData = [[NSMutableArray alloc] init]; // table starts empty
pickerData = [[NSMutableArray alloc] initWithObjects:@"1", @"2", @"3", @"4", @"5", nil]; // picker starts with values 1, 2, 3, 4, 5
[tableView reloadData];
[pickerView reloadAllComponents]; // Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (bool)
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (NSInteger)numberOfSectionsInTableView:(UITableView*)tableView {
//The number of sections in UITableView
return 1;
}
- (NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section {
// The number of rows in the UITableView
return [tableData count];
}
- (UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = @"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil) {
cell = [ [UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];
}
// Set the table cell text to the appropriate value in tableDate
cell.textLabel.text = [tableData objectAtIndex:indexPath.row];
return cell;
}
- (void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// Whatever happens when you select a table view row.
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
// The number of sections in the UIPickerView
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
// The number of rows in the UIPickerView
return [pickerData count];
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
// The data for each row in the UIPickerView
return [pickerData objectAtIndex:row];
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
// whatever you want to happen when a row is selected.
// here I am assuming you want to remove from the picker and add to the table on selection
[tableData addObject:[pickerData objectAtIndex:row]];
[pickerData removeObjectAtIndex:row];
[tableView reloadData];
[pickerView reloadAllComponents];
}
@end
以下是代码中的错误有两个
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
^^^^^^^^^^^^^^^^^
**Local declaration of 'tableView hides instance variable**
第二个错误
[pickerView reloadAllComponents];
^^^^^^^^^^^^^^
Local declaration of 'pickerView hides instance variable
非常感谢,我很快就希望你能来到这里!!!
答案 0 :(得分:1)
如果局部变量和实例变量具有相同的名称,则使用此“tableView隐藏实例变量”。
- (UITableViewCell*)tableView:(UITableView*)tableView1 cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *cellIdentifier = @"cell";
UITableViewCell *cell = [tableView1 dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil) {
cell = [ [UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];
}
cell.textLabel.text = [tableData objectAtIndex:indexPath.row];
return cell;
}
并且对于pickerView使用此
[self.pickerView reloadAllComponents];