IOS之表視圖單元格刪除、移動及插入

2019-11-14 19:41:42

字體：大中小

來源：轉載

供稿：網友

1.實現單元格的刪除，實現效果如下

Cpp代碼

- (void)viewDidLoad
{
[super viewDidLoad];
//設置導航欄
self.editButtonItem.title = @"編輯";
self.navigation.rightBarButtonItem = self.editButtonItem;
[self initTableViewData];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)initTableViewData{
NSBundle *bundle = [NSBundle mainBundle];
NSString *plistPath = [bundle pathForResource:@"user_head" ofType:@"plist"];
dataArr = [[NSMutableArray alloc] initWithContentsOfFile:plistPath];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [dataArr count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"tableCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
NSUInteger row = [indexPath row];
NSDictionary *rowDict = [dataArr objectAtIndex:row];
cell.textLabel.text = [rowDict objectForKey:@"itemName"];
NSLog(@"cell.label.text = %@",[rowDict objectForKey:@"itemName"]);
NSString *imagePath = [rowDict objectForKey:@"itemImagePath"];
cell.imageView.image = [UIImage imageNamed:imagePath];
NSLog(@"cell.image.image = %@",imagePath);
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
return cell;
}
//選中Cell響應事件
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
[tableView deselectRowAtIndexPath:indexPath animated:YES];//選中后的反顯顏色即刻消失
NSUInteger row = [indexPath row];
NSDictionary *rowDict = [dataArr objectAtIndex:row];
NSString *userName = [rowDict objectForKey:@"itemName"];
NSLog(@"userName=%@",userName);
}
//返回編輯狀態的style
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView
editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath
{
//UITableViewCellEditingStyleInsert
// return UITableViewCellEditingStyleNone;
return UITableViewCellEditingStyleDelete;
}
//完成編輯的觸發事件
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle
forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete)
{
[dataArr removeObjectAtIndex: indexPath.row];
// [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
// withRowAnimation:UITableViewRowAnimationFade];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
withRowAnimation:UITableViewRowAnimationFade];
[tableView reloadData];
}
}
//UIViewController生命周期方法，用于響應視圖編輯狀態變化
- (void)setEditing:(BOOL)editing animated:(BOOL)animated {
[super setEditing:editing animated:animated];
[self.tableView setEditing:editing animated:YES];
if (self.editing) {
self.editButtonItem.title = @"完成";
} else {
self.editButtonItem.title = @"編輯";
}
}
@end

- (void)viewDidLoad{    [super viewDidLoad];    //設置導航欄     self.editButtonItem.title = @"編輯";    self.navigation.rightBarButtonItem = self.editButtonItem;    [self initTableViewData];	// Do any additional setup after loading the view.}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}-(void)initTableViewData{    NSBundle *bundle = [NSBundle mainBundle];    NSString *plistPath = [bundle pathForResource:@"user_head" ofType:@"plist"];    dataArr = [[NSMutableArray alloc] initWithContentsOfFile:plistPath];}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return [dataArr count];}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    static NSString *CellIdentifier = @"tableCell";    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];        NSUInteger row = [indexPath row];    NSDictionary *rowDict = [dataArr objectAtIndex:row];    cell.textLabel.text =  [rowDict objectForKey:@"itemName"];    NSLog(@"cell.label.text =  %@",[rowDict objectForKey:@"itemName"]);        NSString *imagePath = [rowDict objectForKey:@"itemImagePath"];    cell.imageView.image = [UIImage imageNamed:imagePath];    NSLog(@"cell.image.image  =  %@",imagePath);        cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;        return cell;}//選中Cell響應事件- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{    [tableView deselectRowAtIndexPath:indexPath animated:YES];//選中后的反顯顏色即刻消失    NSUInteger row = [indexPath row];    NSDictionary *rowDict = [dataArr objectAtIndex:row];    NSString *userName =  [rowDict objectForKey:@"itemName"];    NSLog(@"userName=%@",userName);}//返回編輯狀態的style- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView           editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{    //UITableViewCellEditingStyleInsert//    return UITableViewCellEditingStyleNone;    return UITableViewCellEditingStyleDelete;}//完成編輯的觸發事件- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyleforRowAtIndexPath:(NSIndexPath *)indexPath{    if (editingStyle == UITableViewCellEditingStyleDelete)    {        [dataArr removeObjectAtIndex: indexPath.row];        //        [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]        //                         withRowAnimation:UITableViewRowAnimationFade];        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]                         withRowAnimation:UITableViewRowAnimationFade];        [tableView reloadData];    } }//UIViewController生命周期方法，用于響應視圖編輯狀態變化- (void)setEditing:(BOOL)editing animated:(BOOL)animated {    [super setEditing:editing animated:animated];        [self.tableView setEditing:editing animated:YES];    if (self.editing) {     self.editButtonItem.title = @"完成";    } else {        self.editButtonItem.title = @"編輯";    }}@end

2.移動單元格

Cpp代碼

//完成移動的觸發事件，不添加該方法不實現移動功能
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath*)sourceIndexPath
toIndexPath:(NSIndexPath *)destinationIndexPath
{
NSDictionary *item = [dataArr objectAtIndex:sourceIndexPath.row];
[dataArr removeObjectAtIndex:sourceIndexPath.row];
[dataArr insertObject:item atIndex:destinationIndexPath.row];
}

//完成移動的觸發事件，不添加該方法不實現移動功能- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath*)sourceIndexPath      toIndexPath:(NSIndexPath *)destinationIndexPath{    NSDictionary *item = [dataArr objectAtIndex:sourceIndexPath.row];    [dataArr removeObjectAtIndex:sourceIndexPath.row];    [dataArr insertObject:item atIndex:destinationIndexPath.row];}

3.添加單元格。下面是自定義觸發事件，即單擊左下角的add按鈕

Cpp代碼

- (IBAction)addistItem:(UIBarButtonItem *)sender {
AppUtils *appUtils = [AppUtils alloc];
//需要先初始化一個UIAlertView
UIAlertView *alert = [UIAlertView alloc];
[appUtils showInputDialogWithTitle:@"add" message:@"please input new user name:" toAlertView:alert confirmAction:(^{
//得到輸入框
UITextField *textField=[alert textFieldAtIndex:0];
// 不要寫成NSMutableDictionary *newItem = [NSDictionary dictionary];
NSMutableDictionary *newItem = [NSMutableDictionary dictionary];
[newItem setObject:textField.text forKey:@"itemName"];
[newItem setObject:@"1.jpeg" forKey:@"itemImagePath"];
[dataArr addObject:newItem];
[self.tableView reloadData];
})];
}

- (IBAction)addistItem:(UIBarButtonItem *)sender {    AppUtils *appUtils = [AppUtils alloc];    //需要先初始化一個UIAlertView    UIAlertView *alert = [UIAlertView alloc];    [appUtils showInputDialogWithTitle:@"add" message:@"please input new user name:" toAlertView:alert confirmAction:(^{        //得到輸入框        UITextField *textField=[alert textFieldAtIndex:0];//        不要寫成NSMutableDictionary *newItem = [NSDictionary dictionary];        NSMutableDictionary *newItem = [NSMutableDictionary dictionary];        [newItem setObject:textField.text forKey:@"itemName"];        [newItem setObject:@"1.jpeg" forKey:@"itemImagePath"];        [dataArr addObject:newItem];        [self.tableView reloadData];    })];}

4.附上·AppUtils類

Cpp代碼

#import "AppUtils.h"
#include "RIButtonItem.h"
#include "UIAlertView+Blocks.h"
@implementation AppUtils
//彈出警告框，并實現警告框按鈕的觸發事件
- (void)showInputDialogWithTitle:(NSString *)title message:(NSString *)message toAlertView:(UIAlertView*) alert confirmAction:(void(^)(void))action{
RIButtonItem* cancelItem = [RIButtonItem item];
cancelItem.label = @"No";
cancelItem.action = ^
{
//為NO時的處理
UITextField *tf=[alert textFieldAtIndex:0];
NSLog(@"UITextField=%@",tf.text);
};
RIButtonItem* confirmItem = [RIButtonItem item];
confirmItem.label = @"Yes";
// confirmItem.action = action;
alert = [alert initWithTitle:title
message:message
cancelButtonItem:cancelItem
otherButtonItems:confirmItem, nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
confirmItem.action = action;
[alert show];
}
@end

#import "AppUtils.h"#include "RIButtonItem.h"#include "UIAlertView+Blocks.h"@implementation AppUtils//彈出警告框，并實現警告框按鈕的觸發事件- (void)showInputDialogWithTitle:(NSString *)title message:(NSString *)message toAlertView:(UIAlertView*) alert confirmAction:(void(^)(void))action{    RIButtonItem* cancelItem = [RIButtonItem item];    cancelItem.label = @"No";    cancelItem.action = ^    {        //為NO時的處理        UITextField *tf=[alert textFieldAtIndex:0];        NSLog(@"UITextField=%@",tf.text);    };        RIButtonItem* confirmItem = [RIButtonItem item];    confirmItem.label = @"Yes";//    confirmItem.action = action;    alert = [alert initWithTitle:title                                                    message:message                                           cancelButtonItem:cancelItem                                           otherButtonItems:confirmItem, nil];        alert.alertViewStyle = UIAlertViewStylePlainTextInput;        confirmItem.action = action;    [alert show];}@end