我让我的应用程序完美地导航视图。现在，由于某些我无法弄清楚的原因，我的detailView没有在我的模态视图中呈现pushViewController:detail方法。
我无法弄清楚为什么它不再起作用了。任何帮助，将不胜感激。感谢。
以下是方法：
- (void)tableView:(UITableView *)tView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tView deselectRowAtIndexPath:indexPath animated:YES];
if(indexPath.row == 0){
NSLog(@"hey");
DetailView * detail = [[DetailView alloc] initWithNumber:indexPath.row];
detail.delegate = self;
[[self navigationController] pushViewController:detail animated:YES];
}
if(indexPath.row == 1){
NSLog(@"hey");
DetailView * detail = [[DetailView alloc] initWithNumber:indexPath.row];
detail.delegate = self;
[[self navigationController] pushViewController:detail animated:YES];
}
if(indexPath.row == 2){
NSLog(@"hey");
DetailView * detail = [[DetailView alloc] initWithNumber:indexPath.row];
detail.delegate = self;
[[self navigationController] pushViewController:detail animated:YES];
}
if(indexPath.row == 3){
NSLog(@"hey");
DetailView * detail = [[DetailView alloc] initWithNumber:indexPath.row];
detail.delegate = self;
[[self navigationController] pushViewController:detail animated:YES];
}
if(indexPath.row == 4){
NSLog(@"hey");
DetailView * detail = [[DetailView alloc] initWithNumber:indexPath.row];
detail.delegate = self;
[[self navigationController] pushViewController:detail animated:YES];
}
}
这是类代码。我不确定是否需要使用modalView传递一个navigationController：
//
// ModalView.m
// DiningLog
//
// Created by Eric Rea on 10/10/11.
// Copyright 2011 Avid. All rights reserved.
//
#import "ModalView.h"
#import "DetailView.h"
@implementation ModalView
@synthesize tableView, excersizeName, numSets, time, restTime, dateFormatter, rating, excersizeArray, plistArray, numberWithBool;
-(IBAction) cancel:(id)sender{
[self dismissModalViewControllerAnimated:YES];
}
-(IBAction) save:(id)sender{
// get paths from root direcory
NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
// get documents path
NSString *documentsPath = [paths objectAtIndex:0];
// get the path to our Data/plist file
NSString *plistPath = [documentsPath stringByAppendingPathComponent:@"ExcersizeList.plist"];
// check to see if Data.plist exists in documents
if (![[NSFileManager defaultManager] fileExistsAtPath:plistPath])
{
// if not in documents, get property list from main bundle
plistPath = [[NSBundle mainBundle] pathForResource:@"Excersizes" ofType:@"plist"];
}
// read property list into memory as an NSData object
NSData *plistXML = [[NSFileManager defaultManager] contentsAtPath:plistPath];
NSString *errorDesc = nil;
NSPropertyListFormat format;
// convert static property list into dictionary object
NSDictionary *temp = (NSDictionary *)[NSPropertyListSerialization propertyListFromData:plistXML mutabilityOption:NSPropertyListMutableContainersAndLeaves format:&format errorDescription:&errorDesc];
if (!temp)
{
NSLog(@"Error reading plist: %@, format: %d", errorDesc, format);
}
// assign values
self.plistArray = [NSMutableArray arrayWithArray:[temp objectForKey:@"Excersizes"]];
NSLog(@"The contents of plistArray is%@", plistArray);
// set the variables to the values in the text fields
self.excersizeArray = [[NSMutableArray alloc] initWithCapacity:4];
[excersizeArray addObject:excersizeName];
[excersizeArray addObject:numSets];
[excersizeArray addObject:time];
[excersizeArray addObject:restTime];
[plistArray addObject:excersizeArray];
// create dictionary with values in UITextFields
NSDictionary *plistDict = [NSDictionary dictionaryWithObjects: [NSArray arrayWithObjects: plistArray, nil] forKeys:[NSArray arrayWithObjects: @"Excersizes", nil]];
NSString *error = nil;
// create NSData from dictionary
// NSData *plistData = [NSPropertyListSerialization dataFromPropertyList:plistDict format:NSPropertyListXMLFormat_v1_0 errorDescription:&error];
// check is plistData exists
if(plistDict)
{
// write plistData to our Data.plist file
[plistDict writeToFile:plistPath atomically:YES];
}
else
{
NSLog(@"Error in saveData: %@", error);
[error release];
}
[self dismissModalViewControllerAnimated:YES];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tView {
// Return the number of sections.
return 1;
}
-(void)setObject:(id)object forNum:(int)num{
if(num == 0){
self.excersizeName = object;
NSLog(@"res %@", self.excersizeName);
}else if(num == 1){
self.numSets = object;
NSLog(@"res %@", self.numSets);
}else if(num == 2){
self.time = object;
NSLog(@"res %@", self.time);
}else if(num == 3){
self.restTime = object;
NSLog(@"res %@", self.restTime);
}else if(num == 4){
self.rating = [object floatValue];
}
[tableView reloadData];
}
- (NSInteger)tableView:(UITableView *)tView numberOfRowsInSection:(NSInteger)section {
// Return the number of rows in the section.
return 5;
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue2 reuseIdentifier:CellIdentifier] autorelease];
}
if(indexPath.row == 0){
cell.textLabel.text = @"Excersize";
cell.detailTextLabel.text = excersizeName;
}
if(indexPath.row == 1){
cell.textLabel.text = @"Sets";
cell.detailTextLabel.text = numSets;
}
if(indexPath.row == 2){
cell.textLabel.text = @"Time";
cell.detailTextLabel.text = time;
}
if(indexPath.row == 3){
cell.textLabel.text = @"Rest";
cell.detailTextLabel.text = restTime;
}
if(indexPath.row == 4){
cell.textLabel.text = @"Rating";
cell.detailTextLabel.text = [NSString stringWithFormat:@"%f",rating];
}
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
- (NSDateFormatter *)dateFormatter {
if (dateFormatter == nil) {
dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
[dateFormatter setTimeStyle:NSDateFormatterNoStyle];
}
return dateFormatter;
}
#pragma mark -
#pragma mark Table view delegate
- (void)tableView:(UITableView *)tView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tView deselectRowAtIndexPath:indexPath animated:YES];
if(indexPath.row == 0){
NSLog(@"hey");
DetailView * detail = [[DetailView alloc] initWithNumber:indexPath.row];
detail.delegate = self;
[[self navigationController] pushViewController:detail animated:YES];
}
if(indexPath.row == 1){
NSLog(@"hey");
DetailView * detail = [[DetailView alloc] initWithNumber:indexPath.row];
detail.delegate = self;
[[self navigationController] pushViewController:detail animated:YES];
}
if(indexPath.row == 2){
NSLog(@"hey");
DetailView * detail = [[DetailView alloc] initWithNumber:indexPath.row];
detail.delegate = self;
[[self navigationController] pushViewController:detail animated:YES];
}
if(indexPath.row == 3){
NSLog(@"hey");
DetailView * detail = [[DetailView alloc] initWithNumber:indexPath.row];
detail.delegate = self;
[[self navigationController] pushViewController:detail animated:YES];
}
if(indexPath.row == 4){
NSLog(@"hey");
DetailView * detail = [[DetailView alloc] initWithNumber:indexPath.row];
detail.delegate = self;
[[self navigationController] pushViewController:detail animated:YES];
}
}
// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
/*
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization.
}
return self;
}
*/
/*
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
}
*/
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations.
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc. that aren't in use.
}
- (void)viewDidUnload {
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
@end
答案 0 :(得分：2)
您是否已调试并检查过您的navigationController是否为零？
答案 1 :(得分：0)
我明白了。我不小心删除了rootViewController中的方法insertNewObject。当我重写它时，我忘了添加ModalView * modal = [[ModalView alloc] init];。这就是问题所在。
以下是该方法现在的工作原理：
- (void)insertNewObject {
ModalView * modal = [[ModalView alloc] init];
UINavigationController *controller = [[UINavigationController alloc] initWithRootViewController:modal];
[self presentModalViewController:controller animated:YES];
}