このような選択をしたいのですが
どうすれば変更できますか
- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
私の要件に従って動作するようにメソッドを委任します。
4057 次
7 に答える
2
と呼ばれるビューコントローラのプロパティを保持します
selectedRow。これは、テーブルセクションのチェックされた項目を表すtableviewのindexPathを表します。ビューコントローラの
-tableView:cellForRowAtIndexPath:デリゲートメソッドで、セルがインデックスパス値と等しい場合はaccessoryTypeのcellをに設定します。それ以外の場合は、に設定します。UITableViewCellAccessoryCheckmarkindexPathselectedRowUITableViewCellAccessoryNoneビューコントローラの
-tableView:didSelectRowAtIndexPath:デリゲートメソッドで、選択したselectedRow値に値を設定しますindexPath.row。例：self.selectedRow = indexPath.row
于 2012-12-20T03:59:51.877 に答える
2
これは良い解決策ではありません。を使用しNSMutableArrayて、選択したセクションを保存します。
NSMutableArray *selectedSections; //instance variable
selectedSections= [[NSMutableArray alloc] init]; //in viewDidLoad
- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSNumber *section = [NSNumber numberWithInt:indexPath.section];
if([selectedSections containsObject:section]
return nil;
else
{
[selectedSections addObject:section];
return indexPath;
}
}
行の選択を解除したら、そこに以下のコードを記述します。
[selectedSections removeObject:[NSNumber numberWithInt:indexPath.section]];
于 2012-12-20T04:41:10.353 に答える
2
LimeRed は、このスレッドの別の場所で優れた回答を提供していますが、完全ではありません。重要な問題は、OP でアクセサリのチェックマークを削除する必要があることです。呼び出しただけでdeselectRowはチェックマークは消えません。ドキュメントによると、チェックマーク コードの削除が配置されてdeselectRowいるデリゲート メソッドは呼び出されません。tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath)したがって、LimeRed が作成したコードの一部として、この削除を処理する必要があります。
LimeRed のソリューションに基づいて、アクセサリのチェックマークを再度削除する、より完全な実装を次に示します。
func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath?
{
for path in tableView.indexPathsForSelectedRows ?? []
{
if path.section == indexPath.section && path.item != indexPath.item
{
let cell = tableView.cellForRow(at: path)
cell?.accessoryType = UITableViewCellAccessoryType.none
tableView.deselectRow(at: path, animated: false)
}
}
return indexPath
}
于 2018-06-20T05:03:13.853 に答える
1
このようにしてみてください、
.hで
@property (nonatomic, retain) NSIndexPath *checkedIndexPath;
.mで
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.section==0)
{
// to check and Uncheck the row
if(self.checkedIndexPath)
{
UITableViewCell* uncheckCell = [tableView1
cellForRowAtIndexPath:self.checkedIndexPath];
uncheckCell.accessoryType = UITableViewCellAccessoryNone;
}
if([self.checkedIndexPath isEqual:indexPath])
{
self.checkedIndexPath = nil;
}
else
{
UITableViewCell* cell = [tableView1 cellForRowAtIndexPath:indexPath];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
self.checkedIndexPath = indexPath;
}
}
}
于 2012-12-20T04:16:37.357 に答える
0
多くの変更の後、私はこれに到達しました
- (void)tableView:(UITableView *)aTableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [aTableView cellForRowAtIndexPath:indexPath];
if(indexPath.section == 0)
{
if([section1Rows count] == 0)
{
[section1Rows addObject:[NSNumber numberWithInt:indexPath.row]];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
else
{
[section1Rows removeObjectAtIndex:0];
for (UITableViewCell *cell in [tabview visibleCells]) {
cell.accessoryType = UITableViewCellAccessoryNone;
}
[section1Rows addObject:[NSNumber numberWithInt:indexPath.row]];
NSLog(@"%@",section1Rows);
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
}
if(indexPath.section == 1)
{
if([section2Rows count] == 0)
{
[section2Rows addObject:[NSNumber numberWithInt:indexPath.row]];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
else
{
[section2Rows removeObjectAtIndex:0];
for (UITableViewCell *cell in [tabview visibleCells]) {
cell.accessoryType = UITableViewCellAccessoryNone;
}
[section2Rows addObject:[NSNumber numberWithInt:indexPath.row]];
NSLog(@"%@",section2Rows);
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
}
if(indexPath.section == 2)
{
if([section3Rows count] == 0)
{
[section3Rows addObject:[NSNumber numberWithInt:indexPath.row]];
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
else
{
[section3Rows removeObjectAtIndex:0];
for (UITableViewCell *cell in [tabview visibleCells]) {
cell.accessoryType = UITableViewCellAccessoryNone;
}
[section3Rows addObject:[NSNumber numberWithInt:indexPath.row]];
NSLog(@"%@",section3Rows);
cell.accessoryType = UITableViewCellAccessoryCheckmark;
}
}
}
問題を段階的に説明します。3 つのセクションで行を選択しました。いずれかのセクションで行をもう一度選択すると、すべてがうまくいきません。前に選択した行を選択解除し、次に選択した行を強調表示するにはどうすればよいですか?
ありがとう。
于 2012-12-20T06:12:01.427 に答える
0
これはViewController.hになります
@interface ViewController : UITableViewController
{
NSMutableArray *list;
NSMutableArray *sectionList;
NSIndexPath *oldIndexPath0;
int row0;
NSIndexPath *oldIndexPath1;
int row1;
NSIndexPath *oldIndexPath2;
int row2;
NSIndexPath *oldIndexPath3;
int row3;
NSString *othersString;
NSString *timeString;
NSString *pRoomString;
NSString *parkingString;
NSString *smokingString;
NSString *select0;
NSString *select1;
NSString *select2;
NSString *select3;
}
@end
これは ViewController.m
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewWillAppear:(BOOL)animated
{
// initial row by 100;
row0 = 100;
row1 = 100;
row2 = 100;
row3 = 100;
// initial strings by @”"
othersString = [NSString stringWithFormat:@""];
timeString = [NSString stringWithFormat:@""];
pRoomString = [NSString stringWithFormat:@""];
parkingString = [NSString stringWithFormat:@""];
smokingString = [NSString stringWithFormat:@""];
select0 = @"";
select1 = @"";
select2 = @"";
select3 = @"";
// Get row index
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *fileName = [NSHomeDirectory() stringByAppendingPathComponent:@"tmp/rowString.txt"];
NSData *rowData = [fileManager contentsAtPath:fileName];
// From NSData to NSString
NSString *rowString = [[NSString alloc] initWithData:rowData encoding:NSUTF8StringEncoding];
if (rowString) {
// spit row string
NSArray *rowArray = [rowString componentsSeparatedByString:@":"];
for (int i=0; i<[rowArray count]; i++) {
NSString *indexVal = [rowArray objectAtIndex:i];
if ([indexVal length] != 0) {
// set row value
if (i == 0) {
NSString *row0Str = [rowArray objectAtIndex:0];
row0 = [row0Str intValue];
}
if (i == 1) {
NSString *row1Str = [rowArray objectAtIndex:1];
row1 = [row1Str intValue];
}
if (i == 2) {
NSString *row2Str = [rowArray objectAtIndex:2];
row2 = [row2Str intValue];
}
if (i == 3) {
NSString *row3Str = [rowArray objectAtIndex:3];
row3 = [row3Str intValue];
}
}
}
}
// Update the view with current data before it is displayed.
[super viewWillAppear:animated];
//Initialize the array.
list = [[NSMutableArray alloc] initWithCapacity:0];
sectionList = [[NSMutableArray alloc] initWithCapacity:0];
// section header
NSArray *sectionHeaderArray = [NSArray arrayWithObjects:@"01",@"02",@"03",@"04", nil];
NSDictionary *sectionHeaderDic = [NSDictionary dictionaryWithObject:sectionHeaderArray forKey:@"section"];
[sectionList addObject:sectionHeaderDic];
// time list
NSArray *timeArray = [NSArray arrayWithObjects:@"time 01",@"time 01",@"time 01", nil];
NSDictionary *timeDic = [NSDictionary dictionaryWithObject:timeArray forKey:@"time"];
// private room
NSArray *pRoomArray = [NSArray arrayWithObjects:@"room 01",@"room 02", nil];
NSDictionary *pRoomDic = [NSDictionary dictionaryWithObject:pRoomArray forKey:@"pRoom"];
// parking
NSArray *parkingArray = [NSArray arrayWithObjects:@"park 01",@"park 02",@"park 03", nil];
NSDictionary *parkingDic = [NSDictionary dictionaryWithObject:parkingArray forKey:@"parking"];
// smoking
NSArray *smokingArray = [NSArray arrayWithObjects:@"smoke 01",@"smoke 02",@"smoke 03", nil];
NSDictionary *smokingDic = [NSDictionary dictionaryWithObject:smokingArray forKey:@"smoking"];
// add all dictionary to list
[list addObject:timeDic];
[list addObject:pRoomDic];
[list addObject:parkingDic];
[list addObject:smokingDic];
// Scroll the table view to the top before it appears
[self.tableView reloadData];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
//Number of section
return [list count];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
//Get the dictionary object
NSDictionary *dictionary = [list objectAtIndex:section];
NSArray *array;
switch (section) {
case 0:
// time array
array = [dictionary objectForKey:@"time"];
break;
case 1:
// pRoom array
array = [dictionary objectForKey:@"pRoom"];
break;
case 2:
// parking array
array = [dictionary objectForKey:@"parking"];
break;
case 3:
// smoking array
array = [dictionary objectForKey:@"smoking"];
break;
default:
break;
}
//Number of rows
return [array count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = @"Budget";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
UITableViewCellStyleSubtitle;
}
//Get the dictionary object
NSDictionary *dictionary = [list objectAtIndex:indexPath.section];
NSArray *array;
switch (indexPath.section) {
case 0:
// time array
array = [dictionary objectForKey:@"time"];
if (indexPath.row == row0 ) {
cell.accessoryType=UITableViewCellAccessoryCheckmark;
}else{
cell.accessoryType = UITableViewCellAccessoryNone;
}
break;
case 1:
// pRoom array
array = [dictionary objectForKey:@"pRoom"];
if (indexPath.row == row1) {
cell.accessoryType=UITableViewCellAccessoryCheckmark;
}else{
cell.accessoryType = UITableViewCellAccessoryNone;
}
break;
case 2:
// parking array
array = [dictionary objectForKey:@"parking"];
if (indexPath.row == row2) {
cell.accessoryType=UITableViewCellAccessoryCheckmark;
}else{
cell.accessoryType = UITableViewCellAccessoryNone;
}
break;
case 3:
// smoking array
array = [dictionary objectForKey:@"smoking"];
if (indexPath.row == row3) {
cell.accessoryType=UITableViewCellAccessoryCheckmark;
}else{
cell.accessoryType = UITableViewCellAccessoryNone;
}
break;
default:
break;
}
cell.textLabel.text = [array objectAtIndex:indexPath.row];
NSLog(@"index cell");
return cell;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
NSString *title = nil;
//Get the dictionary object
NSDictionary *dictionary = [sectionList objectAtIndex:0];
NSArray *array = [dictionary objectForKey:@"section"];
title = [array objectAtIndex:section];
return title;
}
#pragma mark -
#pragma mark Table view selection
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:[tableView indexPathForSelectedRow] animated:YES];
switch(indexPath.section)
{
case 0:
{
UITableViewCell *cell1 = [tableView cellForRowAtIndexPath:indexPath];
if ([[tableView cellForRowAtIndexPath:indexPath ] accessoryType] == UITableViewCellAccessoryCheckmark) {
cell1.accessoryType = UITableViewCellAccessoryNone;
row0 = 100;
timeString = @"";
}else {
NSIndexPath *SIndexPath0 = [NSIndexPath indexPathForRow:row0 inSection:0];
if ([[tableView cellForRowAtIndexPath:SIndexPath0 ] accessoryType] == UITableViewCellAccessoryCheckmark) {
[[tableView cellForRowAtIndexPath:SIndexPath0] setAccessoryType:UITableViewCellAccessoryNone];
}
if (oldIndexPath0 == nil) {
oldIndexPath0 = indexPath;
}
UITableViewCell *cell2 = nil;
if (oldIndexPath0 != indexPath) {
cell2 = [tableView cellForRowAtIndexPath:oldIndexPath0];
}
cell1.accessoryType = UITableViewCellAccessoryCheckmark;
if (cell2) {
cell2.accessoryType = UITableViewCellAccessoryNone;
}
//Get the dictionary object
NSDictionary *dictionary = [list objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:@"time"];
timeString = [array objectAtIndex:indexPath.row];
row0 = indexPath.row;
oldIndexPath0 = nil;
}
select0 = @"marked";
break;
}
case 1:
{
UITableViewCell *cell1 = [tableView cellForRowAtIndexPath:indexPath];
if ([[tableView cellForRowAtIndexPath:indexPath ] accessoryType] == UITableViewCellAccessoryCheckmark) {
cell1.accessoryType = UITableViewCellAccessoryNone;
row1 = 100;
pRoomString = @"";
}else {
NSIndexPath *SIndexPath1 = [NSIndexPath indexPathForRow:row1 inSection:1];
if ([[tableView cellForRowAtIndexPath:SIndexPath1 ] accessoryType] == UITableViewCellAccessoryCheckmark) {
[[tableView cellForRowAtIndexPath:SIndexPath1] setAccessoryType:UITableViewCellAccessoryNone];
}
if (oldIndexPath1 == nil) {
oldIndexPath1 = indexPath;
}
UITableViewCell *cell2 = nil;
if (oldIndexPath1 != indexPath) {
cell2 = [tableView cellForRowAtIndexPath:oldIndexPath1];
}
cell1.accessoryType = UITableViewCellAccessoryCheckmark;
if (cell2) {
cell2.accessoryType = UITableViewCellAccessoryNone;
}
//Get the dictionary object
NSDictionary *dictionary = [list objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:@"pRoom"];
pRoomString = [array objectAtIndex:indexPath.row];
row1 = indexPath.row;
oldIndexPath1 = nil;
}
select1 = @"marked";
break;
}
case 2:
{
UITableViewCell *cell1 = [tableView cellForRowAtIndexPath:indexPath];
if ([[tableView cellForRowAtIndexPath:indexPath ] accessoryType] == UITableViewCellAccessoryCheckmark) {
cell1.accessoryType = UITableViewCellAccessoryNone;
row2 = 100;
parkingString = @"";
}else {
NSIndexPath *SIndexPath2 = [NSIndexPath indexPathForRow:row2 inSection:2];
if ([[tableView cellForRowAtIndexPath:SIndexPath2 ] accessoryType] == UITableViewCellAccessoryCheckmark) {
[[tableView cellForRowAtIndexPath:SIndexPath2] setAccessoryType:UITableViewCellAccessoryNone];
}
if (oldIndexPath2 == nil) {
oldIndexPath2 = indexPath;
}
UITableViewCell *cell2 = nil;
if (oldIndexPath2 != indexPath) {
cell2 = [tableView cellForRowAtIndexPath:oldIndexPath2];
}
cell1.accessoryType = UITableViewCellAccessoryCheckmark;
if (cell2) {
cell2.accessoryType = UITableViewCellAccessoryNone;
}
//Get the dictionary object
NSDictionary *dictionary = [list objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:@"parking"];
parkingString = [array objectAtIndex:indexPath.row];
row2 = indexPath.row;
oldIndexPath2 = nil;
}
select2 = @"marked";
break;
}
case 3:
{
UITableViewCell *cell1 = [tableView cellForRowAtIndexPath:indexPath];
if ([[tableView cellForRowAtIndexPath:indexPath ] accessoryType] == UITableViewCellAccessoryCheckmark) {
cell1.accessoryType = UITableViewCellAccessoryNone;
row3 = 100;
smokingString = @"";
}else {
NSIndexPath *SIndexPath3 = [NSIndexPath indexPathForRow:row3 inSection:3];
if ([[tableView cellForRowAtIndexPath:SIndexPath3 ] accessoryType] == UITableViewCellAccessoryCheckmark) {
[[tableView cellForRowAtIndexPath:SIndexPath3] setAccessoryType:UITableViewCellAccessoryNone];
}
if (oldIndexPath3 == nil) {
oldIndexPath3 = indexPath;
}
UITableViewCell *cell2 = nil;
if (oldIndexPath3 != indexPath) {
cell2 = [tableView cellForRowAtIndexPath:oldIndexPath3];
}
cell1.accessoryType = UITableViewCellAccessoryCheckmark;
if (cell2) {
cell2.accessoryType = UITableViewCellAccessoryNone;
}
//Get the dictionary object
NSDictionary *dictionary = [list objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:@"smoking"];
smokingString = [array objectAtIndex:indexPath.row];
row3 = indexPath.row;
oldIndexPath3 = nil;
}
select3 = @"marked";
break;
}
default:
break;
}
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
// Cancle button and add an event handler
self.navigationItem.leftBarButtonItem =
[[UIBarButtonItem alloc] initWithTitle:@"Cancle"
style:UIBarButtonSystemItemCancel
target:self
action:@selector(handleCancle:)];
// Cancle button and add an event handler
self.navigationItem.rightBarButtonItem =
[[UIBarButtonItem alloc] initWithTitle:@"Use"
style:UIBarButtonItemStyleBordered
target:self
action:@selector(handleUse:)];
}
- (void) handleCancle:(id)sender
{
// pop the controller
[self.navigationController popViewControllerAnimated:YES];
}
- (void) handleUse:(id)sender{
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *fileName;
// Get row index value
fileName = [NSHomeDirectory() stringByAppendingPathComponent:@"tmp/othersString.txt"];
NSData *rowValData = [fileManager contentsAtPath:fileName];
// From NSData to NSString
NSString *rowValString = [[NSString alloc] initWithData:rowValData encoding:NSUTF8StringEncoding];
NSString *oldTimeString = @"";
NSString *oldpRoomString = @"";
NSString *oldParkingString = @"";
NSString *oldSmokingString = @"";
if (rowValString) {
// spit row string
NSArray *rowValArray = [rowValString componentsSeparatedByString:@":"];
for (int i=0; i<[rowValArray count]; i++) {
if ([rowValArray objectAtIndex:i] != @"") {
// set row value
if (i == 0 ) {
oldTimeString = [rowValArray objectAtIndex:0];
}
if (i == 1 ) {
oldpRoomString = [rowValArray objectAtIndex:1];
}
if (i == 2 ) {
oldParkingString = [rowValArray objectAtIndex:2];
}
if (i == 3) {
oldSmokingString = [rowValArray objectAtIndex:3];
}
}
}
}
if (select0 == @"") {
timeString = oldTimeString;
}
if (select1 == @"") {
pRoomString = oldpRoomString;
}
if (select2 == @"") {
parkingString = oldParkingString;
}
if (select3 == @"") {
smokingString = oldSmokingString;
}
// make othersString string
othersString = [NSString stringWithFormat:@"%@:%@:%@:%@", timeString, pRoomString, parkingString, smokingString];
// write othersString to othersString.txt file
fileName= [NSHomeDirectory() stringByAppendingPathComponent:@"tmp/othersString.txt"];
NSData *othersData = [othersString dataUsingEncoding:NSUTF8StringEncoding];
[fileManager createFileAtPath:fileName contents:othersData attributes:nil];
// make row data in string
NSString *rowString = [NSString stringWithFormat:@"%i:%i:%i:%i", row0,row1,row2,row3];
// write othersString to othersString.txt file
fileName = [NSHomeDirectory() stringByAppendingPathComponent:@"tmp/rowString.txt"];
NSData *rowData = [rowString dataUsingEncoding:NSUTF8StringEncoding];
[fileManager createFileAtPath:fileName contents:rowData attributes:nil];
// pop the controller
[self.navigationController popViewControllerAnimated:YES];
}
- (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];
[list release];
}
@end
この投稿からこのようなものを入手しました。これは日本語であったため、変更しました。著者に感謝します。
于 2013-01-04T10:38:00.140 に答える