我有一个收藏夹视图，它从sqlite数据库加载数据。它显然会加载进入单元格。
“收藏夹”视图类名为FavReal。我已经启用了canEditRowAtIndexPath，其操作是从数据库中删除条目并将其从表View中删除。它工作正常！我还有一个清除所有收藏夹按钮，正确删除所有条目。
现在，如果我点击一个单元格，它会转到另一个名为Details22视图的视图。在此视图中，我将获得所选单元格的详细信息，并且可以正常工作。
现在点击一个条目并返回收藏夹视图。如果我尝试通过滑动手势或清除所有按钮删除条目。它不起作用：S没有错误没有任何东西它只是不会从数据库中删除它，只是立即从表视图中删除它。
这是我的代码。
/ * FavReal.m * /
//
// FavReal.m
// AuthorsApp
//
// Created by georges ouyoun on 8/16/12.
// Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//
#import "FavReal.h"
#import <sqlite3.h>
#import "Author.h"
#import "Details22.h"
#import "AuthorVC.h"
@interface FavReal ()
@end
@implementation FavReal
@synthesize textLabel2;
@synthesize theFav;
@synthesize author;
NSString *authorNAme;
NSString *authorNAme3 , *authorNAme4;
NSString *authorFav;
NSString *PathDB;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(@"entered the cellForRowAtIndexPath");
static NSString *CellIdentifier2 = @"FavoritesCell";
UITableViewCell *cell2 = [tableView dequeueReusableCellWithIdentifier:CellIdentifier2];
NSLog(@"Break before the if");
if (cell2 == nil) {
NSLog(@"Entered the nil cell 1 ");
cell2= [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier2];
NSLog(@"Entered the nil cell 2 ");
}
Author *author8 = [self.theFav objectAtIndex:indexPath.row];
NSLog(@"Author initialized");
cell2.textLabel.text = author8.title;
NSLog(@"This is the author8.title variable %@" , author8.title);
NSLog(@"Cell2 is initialized");
// NSString *cellName = cell2.textLabel.text;
// [theFav release];
return cell2;
}
-(void)viewWillAppear:(BOOL)animated{
// [self.tableView cell];
NSLog(@"§§§§§§§§§§§§§ VIew will appear phase 1 §§§§§§§§§§§§§§§§");
[self authorList2];
[self.tableView reloadData] ;
NSLog(@"§§§§§§§§§§§§§ VIew will appear §§§§§§§§§§§§§§§§");
[self viewDidLoad];
}
- (void)viewDidLoad
{
NSLog(@"§§§§§§§§§§§§§ ViewDidLoad §§§§§§§§§§§§§§§§");
UIBarButtonItem *nextButton = [[UIBarButtonItem alloc]
initWithTitle:@"Clear All Favorites"
style:UIBarButtonItemStyleBordered
target:self
action:@selector(deleteSomeStuff)];
[[self navigationItem] setLeftBarButtonItem:nextButton];
[nextButton release], nextButton = nil;
[self authorList2];
[super viewDidLoad];
}
- (void)viewDidUnload
{
NSLog(@"§§§§§§§§§§§§§ ViewDid UN-Load §§§§§§§§§§§§§§§§");
[self setTextLabel2:nil];
[ClearBu release];
ClearBu = nil;
[super viewDidUnload];
}
-(void) viewWillDisappear:(BOOL)animated{
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
#warning Potentially incomplete method implementation.
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
#warning Incomplete method implementation.
int rowCount;
rowCount = theFav.count;
return rowCount;
}
-(NSMutableArray *) authorList2{
NSFileManager *fileManager = [NSFileManager defaultManager];
NSLog(@"1");
theFav = [[NSMutableArray alloc] initWithCapacity:1000000];
@try {
NSLog(@"1 alpha:");
BOOL success = [fileManager fileExistsAtPath:PathDB];
NSLog(@"1 gamma");
if(!success)
{
NSLog(@"2");
NSLog(@"Cannot locate database file '%@'.", PathDB);
}
NSLog(@"Success");
if(!(sqlite3_open([PathDB UTF8String], &db2) == SQLITE_OK))
{
NSLog(@"3");
NSLog(@"An error has occured: %@", sqlite3_errmsg(db2));
}
NSLog(@"Database opened");
// const char *sql = "SELECT F_Keyword FROM wordss";
const char *sql2 = "SELECT Name FROM Fav";
sqlite3_stmt *sqlStatement2;
if(sqlite3_prepare(db2, sql2, -1, &sqlStatement2, NULL) != SQLITE_OK)
{
NSLog(@"Problem with prepare statement: %@", sqlite3_errmsg(db2));
}else{
while (sqlite3_step(sqlStatement2)==SQLITE_ROW) {
// NSLog(@"Probleme not with the query but in here!!");
Author * author2 = [[Author alloc] init];
//author2.fav = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement2,2)];
author2.title = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement2,0)];
// authorFav=author2.title;
[theFav addObject:author2];
}
}
}
@catch (NSException *exception) {
NSLog(@"Problem with prepare statement: %@", sqlite3_errmsg(db2));
}
@finally {
return theFav;
}
}
-(void)deleteSomeStuff{
NSLog(@"Delete Button Clicked");
@try {
// NSLog(@"This is the authorName2 variable %@",authorNAme2);
sqlite3_stmt *compiled_statement1;
if(sqlite3_open([PathDB UTF8String], &db2) == SQLITE_OK) {
NSString *formatedSql = [NSString stringWithFormat:@"DELETE FROM Fav"];
const char *sql = [formatedSql UTF8String];
NSLog(@" !!!!!!!! In the middle of it !!!!!!!!!!!!");
if (sqlite3_prepare_v2(db2, sql, -1, &compiled_statement1, NULL) != SQLITE_OK) {
NSLog(@"!!!!!!!!!!!!!!!!!!!ERRRRROOOOOOORRRRRRRRR!!!!!!!!!!!!!!!!!!!!!!!!!");
}
NSLog(@"This is the query %@",formatedSql);
int success = sqlite3_step(compiled_statement1);
if (success != SQLITE_ERROR) {
NSLog(@"Successfully Deleted!");
sqlite3_last_insert_rowid(db2);
}
if(sqlite3_prepare(db2, sql, -1, &compiled_statement1, NULL) != SQLITE_OK)
{
NSLog(@"Problem with prepare statement: %@", sqlite3_errmsg(db2));
}else{
NSLog(@"Got in the else tag where pictures should change ");
while (sqlite3_step(compiled_statement1)!=SQLITE_OK) {
NSLog(@"Got in the while tag");
break;
}
}
}
// NSArray *arr;
[self.theFav removeAllObjects];
[self.tableView reloadData];
}
@catch (NSException *exception) {
NSLog(@"Problem with prepare statement: %@", sqlite3_errmsg(db2));
}
@finally {
sqlite3_close(db2);
}
}
/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/
/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
// Delete the row from the data source
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
else if (editingStyle == UITableViewCellEditingStyleInsert) {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/
/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/
#pragma mark - Table view delegate
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
if(editingStyle == UITableViewCellEditingStyleDelete)
{
@try{
if(!(sqlite3_open([PathDB UTF8String], &db2) == SQLITE_OK))
{
NSLog(@"3");
// NSLog(@"Could not open Db2", sqlite3_errmsg(db2));
}
else {
NSLog(@"Db2 is opened");
}
NSIndexPath *indPath7= [NSIndexPath indexPathForRow:indexPath.row inSection:0];
UITableViewCell *cell7 = [tableView cellForRowAtIndexPath:indPath7];
NSString *cellText7 = cell7.textLabel.text;
// NSLog(@"§§§§§§§§§§§§§§§§§ This is the cell text §§§§§§§§§§" , cellText3);
sqlite3_stmt *sqlStatement7;
NSString *titleString = [[[NSString alloc] initWithFormat:@"%d",indexPath.row] autorelease];
//const char *sql3 = ["DELETE FROM Fav WHERE rowid = '%@'" , titleString] ;
NSString *formatedSql3 = [NSString stringWithFormat:@"DELETE FROM Fav WHERE Name = '%@'" ,cellText7];
// const char *formatedSql3 = [@"DELETE FROM Fav WHERE rowid = '%@'",titleString];
NSLog(@"This is the DELETE Query %@", formatedSql3);
const char *sql3 = [formatedSql3 UTF8String];
NSLog(@"This is the titleString Variable %@ " , titleString);
if(sqlite3_prepare(db2, sql3, -1, &sqlStatement7, NULL) != SQLITE_OK)
{
NSLog(@"Problem with prepare statement: %@", sqlite3_errmsg(db2));
}
else{
int successS = sqlite3_step(sqlStatement7);
if (successS != SQLITE_DONE) {
NSLog(@"An error Has occured during the delete of the specific record");
}
else{
NSLog(@"Update Database successfull!");
}
}
}
@catch (NSException *exception) {
NSLog(@"Problem with prepare statement: %@", sqlite3_errmsg(db2));
}
@finally {
//sqlite3_finalize(sql);
// sqlite3_close(db2);
//return theFav;
}
[self.theFav removeObjectAtIndex:indexPath.row];
[self.tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSIndexPath *indPath3 = [NSIndexPath indexPathForRow:indexPath.row inSection:0];
UITableViewCell *cell3 = [tableView cellForRowAtIndexPath:indPath3];
NSString *cellText3 = cell3.textLabel.text;
// NSLog(@"This is at first : %@" , authorNAme);
// NSString *titleString2 = [[[NSString alloc] initWithFormat:@"Element row number : %d",indexPath.row] autorelease];
NSLog(@"This is the showDetailsForIndexPath");
Details22 * vc4 = [self.storyboard instantiateViewControllerWithIdentifier:@"Details22"];
//FavReal* author;
NSLog(@"This is the showDetailsForIndexPath 2");
@try{
if(sqlite3_open([PathDB UTF8String], &db2) == SQLITE_OK) {
NSString *titleString3 = [[[NSString alloc] initWithFormat:@"Element row number : %d",indexPath.row] autorelease];
NSLog(@"This is the row number chosen %@",titleString3);
NSString *formatedSql333 = [NSString stringWithFormat:@"Select * from Sheet1 where field3 = '%@'" , cellText3 ];
const char *formatedSql3333 = [formatedSql333 UTF8String];
NSLog(@"This is the SQLite Approriate Query %@",formatedSql333);
sqlite3_stmt *sqlStatement3;
NSString *SearchedItem = cellText3;
NSLog(@"This is the SearchedITem Variable %@" , SearchedItem);
if(sqlite3_prepare(db2, formatedSql3333, -1, &sqlStatement3, NULL) != SQLITE_OK)
{
NSLog(@"Problem with prepare statement: %@", sqlite3_errmsg(db2));
}else{
while (sqlite3_step(sqlStatement3)!=SQLITE_ERROR) {
NSLog(@"Entered the While tag");
NSString *SearchedItem = cellText3;
NSLog(@"This is the SearchedITem Variable %@" , SearchedItem);
Author * author3 = [[Author alloc] init];
NSLog(@" Debug 1 ");
author3.name = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement3,2)];
NSLog(@" Debug 2 ");
NSLog(@"This is the author.name in the FavReal %@" , author3.name);
author3.title = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement3,3)];
NSLog(@"This is the author.TITLE in the FavReal %@" , author3.title);
author3.genre = [NSString stringWithUTF8String:(char *) sqlite3_column_text(sqlStatement3, 6)];
NSLog(@"This is the author.GENRE in the FavReal %@" , author3.genre);
NSLog(@"This is the authorName before %@", authorNAme);
NSLog(@"This is the authorName2 before %@", authorNAme2);
authorNAme = author3.genre;
authorNAme2 = author3.name;
NSLog(@"This is the authorName after %@", authorNAme);
NSLog(@"This is the authorName2 after %@", authorNAme2);
NSLog(@"Before the break");
NSLog(@"Before the animation part");
[self.navigationController pushViewController:vc4 animated:true];
NSLog(@"Passed the should animate part");
break;
NSLog(@"After the break");
}
}
}
}
@catch (NSException *exception) {
NSLog(@"Problem with prepare statement: %@", sqlite3_errmsg(db2));
}
@finally {
sqlite3_close(db2);
NSLog(@"The database should NOT be closed here");
}
}
- (UITableViewCellAccessoryType)tableView:(UITableView *)tableView accessoryTypeForRowWithIndexPath:(NSIndexPath *)indexPath {
//return UITableViewCellAccessoryDetailDisclosureButton;
return UITableViewCellAccessoryDisclosureIndicator;
}
- (void)tableView:(UITableView *)tableView accessoryButtonTappedForRowWithIndexPath:(NSIndexPath *)indexPath {
[self tableView:tableView didSelectRowAtIndexPath:indexPath];
}
- (void)dealloc {
[theFav release];
[self release];
[textLabel2 release];
[textLabel2 release];
[ClearBu release];
[super dealloc];
}
- (IBAction)ClearButtonAction:(id)sender {
NSLog(@"Clear Button is Clicked");
}
@end
/ * Details22.m * /
//
// Details.m
// AuthorsApp
//
// Created by georges ouyoun on 7/17/12.
// Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//
#import "AppDelegate.h"
#import "Details22.h"
#import "Author.h"
#import "AuthorVC.h"
#import <sqlite3.h>
#import "FavReal.h"
//#import "MTPopupWindow.h"
@interface Details22 ()
@end
@implementation Details22
//@synthesize Favo;
@synthesize text2;
@synthesize WebV2;
@synthesize labelText;
@synthesize selectedAuthors;
@synthesize author , infoRequest;
NSUInteger textFontSize2 = 20;
NSString *PathDB;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
NSLog(@"In the viewDidLoad this is the current value of the textFontSize %d" , textFontSize2);
NSString * htmlString = [NSString stringWithFormat:@"\
<html>\
<body>\
<p dir='rtl' style = 'font-size:40px;'> %@ </p>\
</body>\
</html>",authorNAme];
[self.WebV2 setScalesPageToFit:YES];
[self.WebV2 loadHTMLString:htmlString baseURL:nil];
self.text2.text = authorNAme2;
/* //////////////////////////////////////////// This is where the label text APPearsssssssss /////////////////////////// */
NSLog(@"Everything is ok now !");
}
- (void)viewDidUnload
{
// [self setLabelText:nil];
NSLog(@"U have entered view did unload in Details22");
//[FavReal initialize];
[self setText2:nil];
[self setWebV2:nil];
[sizeFontFromStepper release];
sizeFontFromStepper = nil;
[super viewDidUnload];
//[self setLabelText:Nil];
//[AuthorVC load];
//[self release];
// NSLog(@" FAvReal should have been initialised ");
// Release any retained subviews of the main view.
}
-(void)viewWillAppear:(BOOL)animated
{
NSLog(@"U have entered the viewWillAppear tag");
}
-(void) viewWillDisappear:(BOOL)animated{
NSLog(@"This is the view will disappear tag in Details22");
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
- (void)dealloc {
[labelText release];
[text2 release];
// [fontStep release];
[WebV2 release];
[sizeFontFromStepper release];
// [sizeFontFromStepper release];
[super dealloc];
}
-(void)loadHTMLString:(int)textFontSize2
{
NSString * htmlString = [NSString stringWithFormat:@"\
<html>\
<body>\
<p dir='rtl' style = 'font-size:%dpx;'> %@ </p>\
</body>\
</html>",textFontSize2,authorNAme];
NSLog(@"This is the loadHTMLString function with a textFonSize of %d" , textFontSize2);
//[self.WebV setScalesPageToFit:YES];
[self.WebV2 loadHTMLString:htmlString baseURL:nil];
}
- (IBAction)loadHtmlNewFontSize:(int)textFontSize2 {
textFontSize2 = sizeFontFromStepper.value;
[self loadHTMLString:textFontSize2];
NSLog(@"This is textFontSize %d" , textFontSize2);
}
@end
任何人？
答案 0 :(得分：0)
经过很多腰部时间!!!唯一最简单的解决方案是在didSelectRowAtIndexPath方法中，在@finally， sqlite3_finalize（stmt） 中添加FavReal.m。 这就是整个问题！