iOS中的可扩展列表视图
我需要在我的iOS应用程序中创建可扩展的列表视图，即，如果你点击一个单元格，它应该扩展以提供更多单元格。我将遵循此链接中给出的示例： 这里也给出了实现文件的代码： 但是，在上面的示例中，数组是固定的。我有一个sqlite数据库，其中存储任务及其开始日期等。我需要创建一个可展开的视图，其中不同的行是不同的开始日期，当我点击某个日期时，它应该给出该日期的任务。代码如下：iOS中的可扩展列表视图,ios,objective-c,xcode4.5,Ios,Objective C,Xcode4.5,我需要在我的iOS应用程序中创建可扩展的列表视图，即，如果你点击一个单元格，它应该扩展以提供更多单元格。我将遵循此链接中给出的示例： 这里也给出了实现文件的代码： 但是，在上面的示例中，数组是固定的。我有一个sqlite数据库，其中存储任务及其开始日期等。我需要创建一个可展开的视图，其中不同的行是不同的开始日期，当我点击某个日期时，它应该给出该日期的任务。代码如下： - (void)viewDidLoad { [super viewDidLoad]; allDates = [[N
- (void)viewDidLoad
{
[super viewDidLoad];
allDates = [[NSMutableArray alloc]init];
self.date = [[NSMutableArray alloc] initWithObjects: nil];
// self.date = [[NSMutableArray alloc]init];
self.listOfSections_DataSource = [[NSMutableArray alloc]initWithObjects:nil];
sqlite3_stmt *statement;
const char *dbpath = [mDatabasePath UTF8String];
if (sqlite3_open(dbpath,&mDiary)== SQLITE_OK) {
NSString *selectSQL = [NSString stringWithFormat:@"SELECT * FROM TODO"];
const char *query_stmt = [selectSQL UTF8String];
if (sqlite3_prepare_v2(mDiary,
query_stmt, -1, &statement, NULL) == SQLITE_OK)
{
while(sqlite3_step(statement) == SQLITE_ROW)
{
tempTaskName = [[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 2)];
[allDates addObject:[[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 0)]];
[self.date addObject:tempTaskName];
}
}
sqlite3_finalize(statement);
}
sqlite3_close(mDiary);
NSLog(@"%i",[allDates count]);
for(int x = 0;x < [allDates count];x++)
{
if (sqlite3_open(dbpath,&mDiary)== SQLITE_OK) {
NSString *selectSQL = [NSString stringWithFormat:@"SELECT * FROM TODO"];
const char *query_stmt = [selectSQL UTF8String];
if (sqlite3_prepare_v2(mDiary,
query_stmt, -1, &statement, NULL) == SQLITE_OK){
temp = [[NSMutableArray alloc]init];
while(sqlite3_step(statement) == SQLITE_ROW)
{
tempTaskName = [[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 2)];
NSLog(@"%@",tempTaskName);
// [allDates addObject:[[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 0)]];
if([[[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 0)] isEqualToString:allDates[x]])
{
[self.temp addObject:tempTaskName];
}
}
NSLog(@"task name%@",temp);
[listOfSections_DataSource addObject:temp];
} sqlite3_finalize(statement);
}
sqlite3_close(mDiary);
}
//[self.listOfSections_DataSource addObject:allDates];
NSMutableArray *emptyArray = [[NSMutableArray alloc]init];
listOfSections = [[NSMutableArray alloc]init];
for (int i = 0;i<[allDates count]; i++) {
[listOfSections addObject:emptyArray];
}
self.selectedSection = -1;
self.selectedSectionTail = -1;
}
-（void）viewDidLoad
{
[超级视图下载]；
allDates=[[NSMutableArray alloc]init]；
self.date=[[NSMutableArray alloc]initWithObjects:nil]；
//self.date=[[NSMutableArray alloc]init]；
self.listOfSections_DataSource=[[NSMutableArray alloc]initWithObjects:nil]；
sqlite3_stmt*语句；
const char*dbpath=[mDatabasePath UTF8String]；
if（sqlite3\u打开（dbpath，&mdary）==SQLITE\u正常）{
NSString*selectSQL=[NSString stringWithFormat:@“从TODO中选择*”；
const char*query_stmt=[selectSQL UTF8String]；
如果（sqlite3\u准备\u v2），
查询\u stmt，-1，&语句，NULL）==SQLITE\u OK）
{
while（sqlite3\u步骤（语句）=SQLITE\u行）
{
TestAskname=[[NSString alloc]initWithUTF8String:（const char*）sqlite3_column_text（语句，2）]；
[allDates添加对象：[[NSString alloc]initWithUTF8String:（const char*）sqlite3_column_text（语句，0）]；
[self.date addObject:tentaskname]；
}
}
sqlite3_最终确定（声明）；
}
sqlite3_关闭（mDiary）；
NSLog（@“%i”，[allDates count]）；
对于（int x=0；x<[allDates计数]；x++）
{
if（sqlite3\u打开（dbpath，&mdary）==SQLITE\u正常）{
NSString*selectSQL=[NSString stringWithFormat:@“从TODO中选择*”；
const char*query_stmt=[selectSQL UTF8String]；
如果（sqlite3\u准备\u v2），
查询\u stmt，-1，&语句，NULL）==SQLITE\u OK）{
temp=[[NSMutableArray alloc]init]；
while（sqlite3\u步骤（语句）=SQLITE\u行）
{
TestAskname=[[NSString alloc]initWithUTF8String:（const char*）sqlite3_column_text（语句，2）]；
NSLog（@“%@”，testaskname）；
//[allDates添加对象：[[NSString alloc]initWithUTF8String:（const char*）sqlite3_column_text（语句，0）]；
if（[[[NSString alloc]initWithUTF8String:（const char*）sqlite3_column_text（语句，0）]IsequalString:allDates[x]]
{
[self.temp addObject:tentaskname]；
}
}
NSLog（@“任务名称%@”，临时）；
[listOfSections_数据源addObject:temp]；
}sqlite3_最终确定（声明）；
}
sqlite3_关闭（mDiary）；
}
//[self.listOfSections_DataSource addObject:allDates]；
NSMutableArray*emptyArray=[[NSMutableArray alloc]init]；
listOfSections=[[NSMutableArray alloc]init]；
对于（int i=0；i此示例可能就是您要查找的：
该示例从静态数据中提取，但您应该能够更新它以使用数据库中的动态数据，并提供日期等任务。我需要的东西现在正在工作，因此我将在这里发布代码：
- (void)viewDidLoad
{
[super viewDidLoad];
BOOL flag = NO;
allDates = [[NSMutableArray alloc]init];
self.date = [[NSMutableArray alloc] init];
// self.date = [[NSMutableArray alloc]init];
self.listOfSections_DataSource = [[NSMutableArray alloc]init];
sqlite3_stmt *statement;
const char *dbpath = [mDatabasePath UTF8String];
if (sqlite3_open(dbpath,&mDiary)== SQLITE_OK) {
NSString *selectSQL = [NSString stringWithFormat:@"SELECT * FROM TODO"];
const char *query_stmt = [selectSQL UTF8String];
if (sqlite3_prepare_v2(mDiary,
query_stmt, -1, &statement, NULL) == SQLITE_OK)
{
while(sqlite3_step(statement) == SQLITE_ROW)
{
tempTaskName = [[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 2)];
[allDates addObject:[[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 0)]];
//[self.date addObject:tempTaskName];
}
}
sqlite3_finalize(statement);
}
NSLog(@"%i",[allDates count]);
sqlite3_close(mDiary);
self.date = [NSMutableArray arrayWithCapacity:[allDates count]];
for(int p = 0; p < [allDates count]; p++)
{
for(int q = p+1; q < [allDates count]; q++)
{
if([allDates[p] isEqualToString:allDates[q]])
{
flag = YES;
break;
}
}
if(flag)
{
//[self.date addObject:allDates[p]];
[allDates removeObjectAtIndex:p];
}
flag = NO;
}
// NSLog(@"%u",[self.date count]);
// [allDates setArray:self.date];
NSLog(@"allDates count%i",[allDates count]);
for(int x = 0;x < [allDates count];x++)
{
if (sqlite3_open(dbpath,&mDiary)== SQLITE_OK) {
NSString *selectSQL = [NSString stringWithFormat:@"SELECT * FROM TODO"];
const char *query_stmt = [selectSQL UTF8String];
if (sqlite3_prepare_v2(mDiary,
query_stmt, -1, &statement, NULL) == SQLITE_OK){
temp = [[NSMutableArray alloc]init];
while(sqlite3_step(statement) == SQLITE_ROW)
{
tempTaskName = [[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 2)];
NSLog(@"%@",tempTaskName);
if([[[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 0)] isEqualToString:allDates[x]])
{
[self.temp addObject:tempTaskName];
}
}
NSLog(@"task name%@",temp);
[listOfSections_DataSource addObject:temp];
} sqlite3_finalize(statement);
}
sqlite3_close(mDiary);
}
//[self.listOfSections_DataSource addObject:allDates];
NSMutableArray *emptyArray = [[NSMutableArray alloc]init];
listOfSections = [[NSMutableArray alloc]init];
for (int i = 0;i<[allDates count]; i++) {
[listOfSections addObject:emptyArray];
}
self.selectedSection = -1;
self.selectedSectionTail = -1;
}
-（void）viewDidLoad
{
[超级视图下载]；
布尔标志=否；
allDates=[[NSMutableArray alloc]init]；
self.date=[[NSMutableArray alloc]init]；
//self.date=[[NSMutableArray alloc]init]；
self.listOfSections_DataSource=[[NSMutableArray alloc]init]；
sqlite3_stmt*语句；
const char*dbpath=[mDatabasePath UTF8String]；
if（sqlite3\u打开（dbpath，&mdary）==SQLITE\u正常）{
NSString*selectSQL=[NSString stringWithFormat:@“从TODO中选择*”；
const char*query_stmt=[selectSQL UTF8String]；
如果（sqlite3\u准备\u v2），
查询\u stmt，-1，&语句，NULL）==SQLITE\u OK）
{
while（sqlite3\u步骤（语句）=SQLITE\u行）
{
TestAskname=[[NSString alloc]initWithUTF8String:（const char*）sqlite3_column_text（语句，2）]；
[allDates添加对象：[[NSString alloc]initWithUTF8String:（const char*）sqlite3_column_text（语句，0）]；
//[self.date addObject:tentaskname]；
}
}
sqlite3_最终确定（声明）；
}
NSLog（@“%i”，[allDates count]）；
sqlite3_关闭（mDiary）；
self.date=[NSMutableArray阵列容量：[所有日期计数]]；
对于（int p=0；p<[所有日期计数]；p++）
{
对于（int q=p+1；q<[所有日期计数]；q++）
{
if（[allDates[p]IseQualtString:allDates[q]]））
{
flag=是；
打破
}
}
国际单项体育联合会（旗）
{
//[self.date addObject:allDates[p]]；
[所有日期删除对象索引：p]；
}
标志=否；
}
//NSLog（@“%u”，[self.date count]）；
//[所有日期集合数组：self.date]；
NSLog（@“所有日期计数%i，[allDates计数]）；
对于（int x=0；x<[allDates计数]；x++）
{
if（sqlite3\u打开（dbpath，&mdary）==SQLITE\u正常）{
NSString*selectSQL=[NSString stringWithFormat:@“从TODO中选择*”；
const char*query_stmt=[selectSQL UTF8String]；
如果（sqlite3\u准备\u v2），
查询\u stmt，-1，&语句，NULL）==SQLITE\u OK）{
temp=[[NSMutableArray alloc]init]；
while（sqlite3\u步骤（语句）=SQLITE\u行）
{
TestAskname=[[NSString alloc]initWithUTF8String:（const char*）sqlite3_column_text（语句，2）]；
NSLog（@“%@”，testaskname）；
if（[[[NSString alloc]initWithUTF8String:（const char*）sqlite3\u col
- (void)viewDidLoad
{
[super viewDidLoad];
BOOL flag = NO;
allDates = [[NSMutableArray alloc]init];
self.date = [[NSMutableArray alloc] init];
// self.date = [[NSMutableArray alloc]init];
self.listOfSections_DataSource = [[NSMutableArray alloc]init];
sqlite3_stmt *statement;
const char *dbpath = [mDatabasePath UTF8String];
if (sqlite3_open(dbpath,&mDiary)== SQLITE_OK) {
NSString *selectSQL = [NSString stringWithFormat:@"SELECT * FROM TODO"];
const char *query_stmt = [selectSQL UTF8String];
if (sqlite3_prepare_v2(mDiary,
query_stmt, -1, &statement, NULL) == SQLITE_OK)
{
while(sqlite3_step(statement) == SQLITE_ROW)
{
tempTaskName = [[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 2)];
[allDates addObject:[[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 0)]];
//[self.date addObject:tempTaskName];
}
}
sqlite3_finalize(statement);
}
NSLog(@"%i",[allDates count]);
sqlite3_close(mDiary);
self.date = [NSMutableArray arrayWithCapacity:[allDates count]];
for(int p = 0; p < [allDates count]; p++)
{
for(int q = p+1; q < [allDates count]; q++)
{
if([allDates[p] isEqualToString:allDates[q]])
{
flag = YES;
break;
}
}
if(flag)
{
//[self.date addObject:allDates[p]];
[allDates removeObjectAtIndex:p];
}
flag = NO;
}
// NSLog(@"%u",[self.date count]);
// [allDates setArray:self.date];
NSLog(@"allDates count%i",[allDates count]);
for(int x = 0;x < [allDates count];x++)
{
if (sqlite3_open(dbpath,&mDiary)== SQLITE_OK) {
NSString *selectSQL = [NSString stringWithFormat:@"SELECT * FROM TODO"];
const char *query_stmt = [selectSQL UTF8String];
if (sqlite3_prepare_v2(mDiary,
query_stmt, -1, &statement, NULL) == SQLITE_OK){
temp = [[NSMutableArray alloc]init];
while(sqlite3_step(statement) == SQLITE_ROW)
{
tempTaskName = [[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 2)];
NSLog(@"%@",tempTaskName);
if([[[NSString alloc]initWithUTF8String:(const char *) sqlite3_column_text(statement, 0)] isEqualToString:allDates[x]])
{
[self.temp addObject:tempTaskName];
}
}
NSLog(@"task name%@",temp);
[listOfSections_DataSource addObject:temp];
} sqlite3_finalize(statement);
}
sqlite3_close(mDiary);
}
//[self.listOfSections_DataSource addObject:allDates];
NSMutableArray *emptyArray = [[NSMutableArray alloc]init];
listOfSections = [[NSMutableArray alloc]init];
for (int i = 0;i<[allDates count]; i++) {
[listOfSections addObject:emptyArray];
}
self.selectedSection = -1;
self.selectedSectionTail = -1;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return [listOfSections_DataSource count];
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if(selectedSection !=section)
return 1;
else{
NSArray *array = [listOfSections objectAtIndex:section];
return [array count];
}
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
for(int y = 0;y<[allDates count]; y++)
{
if (section == y) {
return allDates[y];
}
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"cell";
if(self.selectedSection == indexPath.section){//this is just to check to see if this section is the one we touched
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// cell.textLabel.text = [[listOfSections_DataSource objectAtIndex:indexPath.section] objectAtIndex:indexPath.row];
NSArray *myArray = [listOfSections_DataSource objectAtIndex:indexPath.section];//tasks
NSString* myString = [myArray objectAtIndex:indexPath.row]; // get task for that row, under the date
cell.textLabel.text = myString;
return cell;
}
else{//THIS IS going to happen the first time
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = @"more";
return cell;
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell * cell = [tableView cellForRowAtIndexPath:indexPath];
//check to see if the cell is for exapnding or for selection
if([cell.textLabel.text isEqualToString:@"more"]){ // this means we need to expand
listOfSections = [[NSMutableArray alloc]init];
//setting up the list of section with empty arrays
NSMutableArray *emptyArray = [[NSMutableArray alloc]init];
for (int i = 0;i<[allDates count]; i++) {
[listOfSections addObject:emptyArray];
}
//Add array of tasks here
[listOfSections replaceObjectAtIndex:indexPath.section withObject:[listOfSections_DataSource objectAtIndex:indexPath.section]];
int tapedRow = [indexPath section];
self.selectedSection = tapedRow;
NSMutableIndexSet *myIndexSet = [[NSMutableIndexSet alloc]init];
[myIndexSet addIndex:selectedSection];
[myIndexSet addIndex:selectedSectionTail];
// Updating section in the tableview
if(selectedSectionTail!=-1)
[taskTable reloadSections:(NSIndexSet*)myIndexSet withRowAnimation:UITableViewRowAnimationFade];
else {
[taskTable reloadSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:
UITableViewRowAnimationFade];
}
//[taskTable reloadData];
}
else{
}
selectedSectionTail = selectedSection;
}
struct CellData {
var isOpened = Bool()
var title = String()
var sectionData = [String]()
}
class TableViewController: UITableViewController {
var tableViewData = [CellData]()
override func viewDidLoad() {
super.viewDidLoad()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem
tableViewData = [CellData(isOpened: false, title: "title1", sectionData: ["cell1","cell2","cell3"]),CellData(isOpened: false, title: "title2", sectionData: ["cell1","cell2","cell3"]),CellData(isOpened: false, title: "title3", sectionData: ["cell1","cell2","cell3"])]
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return tableViewData.count
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
if tableViewData[section].isOpened {
return tableViewData[section].sectionData.count + 1
}
return 1
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.row == 0 {
guard let cell = tableView.dequeueReusableCell(withIdentifier: "cell") else {
return UITableViewCell()
}
cell.textLabel?.text = tableViewData[indexPath.section].title
return cell
} else {
guard let cell = tableView.dequeueReusableCell(withIdentifier: "cell") else {
return UITableViewCell()
}
cell.textLabel?.text = tableViewData[indexPath.section].sectionData[indexPath.row - 1]
return cell
}
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if indexPath.row == 0 {
if tableViewData[indexPath.section].isOpened {
tableViewData[indexPath.section].isOpened = false
}else {
tableViewData[indexPath.section].isOpened = true
}
let sections = IndexSet(integer: indexPath.section)
tableView.reloadSections(sections, with: .none)
}
}
}