自定義tableview的footerview
阿新 • • 發佈：2019-02-14
之前一直沒有自定義過tableview的footerview，猛的，汪同學讓我自定義下，還有點弱弱的，本來想問他的，後來覺得應該也是比較簡單的。遂自己查了下，果然很簡單。記錄下，以備後續。
header通過下面兩個代理方法設定 - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section - (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section footer通過下面兩個 - (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section - (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section 如果要做整個tableview的header和footer，要通過tableview setHeaderView setFooterView
例項：
在tableview中的設定：
addTableViewFootView *view = [[addTableViewFootView alloc]initWithFrame:CGRectMake(0, 0, 100, 50)];
//view.backgroundColor = [UIColor redColor];
view.delegate = self;
[_myTableView setTableFooterView:view];
在tableview中實現代理方法：
（1）首先實現代理協議
（2）實現代理方法
-(void)myTabVAddClick:(UIButton *)btn { //1.點選的是全選按鈕 if ([btn.titleLabel.text isEqualToString:@"全選"]) { int m = 0; int n = 0; NSString * flag; for(int i = 0;i <self.selected.count;i++){ flag = self.selected[i]; if ([flag isEqualToString:@"Y"]) { //flag = @"N"; m++; }else{ //flag = @"Y"; n++; } } //如果選中了一些人，然後想全選 if (m >=0 && n>0) { flag = @"Y"; for(int i = 0;i <self.selected.count;i++){ self.selected[i] = flag; } } if (n == 0) { flag = @"N"; for(int i = 0;i <self.selected.count;i++){ self.selected[i] = flag; } } //重新整理介面 [_myTableView reloadData]; } //2.點選的是加入分組按鈕---就將對應的人加入到對應的組中去 else{ //(1)判斷分組名是否存在，存在才能插入 if(_groupTitleString.length <=0){ _hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES]; _hud.mode = MBProgressHUDModeText; _hud.labelText = @"您還沒有輸入分組名"; _hud.margin = 10.f; _hud.removeFromSuperViewOnHide = YES; [_hud hide:YES afterDelay:1]; return; } //(2)將選中的人 的分組欄位更新 AppDelegate *myAppDelegate = [[UIApplication sharedApplication]delegate]; if ([myAppDelegate.db open]) { //開啟成功 //記錄加入組中的人數 int count = 0; //查詢該組在資料庫中的id NSString *ID; if ([self.flag isEqualToString:@"add"]) { FMResultSet *resultSet = [myAppDelegate.db executeQuery:@"select *from custom1013"]; while ([resultSet next]) { //ID ID = [resultSet stringForColumn:@"id"]; } NSLog(@"當前組的id 是%@",ID); }else{ ID = self.selectedId; NSLog(@"當前組的id是%@",ID); } for(int i = 0; i<self.selected.count;i++){ NSString *flag = self.selected[i]; //1.選中的話，加入該分組 if ([flag isEqualToString:@"Y"]) { NSString *myID = self.IDArray[i]; count++; NSDate *date_one = [NSDate date]; NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy-MM-dd HH:mm"]; NSString *updatedTime = [formatter stringFromDate:date_one ]; NSString *existsSql = [NSString stringWithFormat:@"update custom001 set reserve38 = '%@',updated_at = '%@' where id = '%@'", ID ,updatedTime, myID]; BOOL ok = [myAppDelegate.db executeUpdate:existsSql]; if (ok) { NSLog(@"加入該分組成功"); }else{ NSLog(@"加入該分組失敗"); } } //2.如果未選中的話，將對應欄位設為空 if([flag isEqualToString:@"N"]){ if (!self.selectedId ) { NSString *myID = self.IDArray[i]; NSDate *date_one = [NSDate date]; NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy-MM-dd HH:mm"]; NSString *updatedTime = [formatter stringFromDate:date_one ]; NSString *existsSql = [NSString stringWithFormat:@"update custom001 set reserve38 = '%@',updated_at = '%@' where (id = '%@' and reserve38 = '%@' )", NULL ,updatedTime, myID,self.selectedId]; BOOL ok = [myAppDelegate.db executeUpdate:existsSql]; if (ok) { NSLog(@"未選中，加入該分組成功"); }else{ NSLog(@"未選中，加入該分組失敗"); } } } } //這邊還需要將數量寫入到對應的資料表中 NSDate *date_one = [NSDate date]; NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyy-MM-dd HH:mm"]; NSString *updatedTime = [formatter stringFromDate:date_one ]; //id 主鍵自增長 //sys_id //status_id //custom_id //modifydate //reserve1 分組名 //reserve2 成員數量 --暫時為0 //remark @"remark" //update_sales //created_at 建立時間 //updated_at 更新時間 //seller_id NSString *countStr = [NSString stringWithFormat:@"%d",count]; NSString *existsSql = [NSString stringWithFormat:@"update custom1013 set reserve2 = '%@',updated_at = '%@' where id = '%@'",countStr,updatedTime,ID]; NSLog(@"sql is %@",existsSql); BOOL ok = [myAppDelegate.db executeUpdate:existsSql]; if (ok) { NSLog(@"分組數量加入成功"); }else{ NSLog(@"分組數量加入失敗"); } NSLog(@"開始跳轉到前面"); [self.navigationController popViewControllerAnimated:YES ]; }else{ NSLog(@"新增通訊錄人到分組時 資料庫開啟失敗"); } } NSLog(@"btn的title是 %@",btn.titleLabel.text); }
自定義的view：addTableviewFootView的標頭檔案和.m檔案
.m檔案#import <UIKit/UIKit.h> @protocol myTabAddVdelegate <NSObject> -(void)myTabVAddClick:(UIButton *)btn; @end @interface addTableViewFootView : UIView @property (nonatomic,strong) UIButton * cellSelectBtn; @property (nonatomic,strong) UIButton * addBtn; @property(assign,nonatomic)id<myTabAddVdelegate>delegate; @end
#import "addTableViewFootView.h"
@implementation addTableViewFootView
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
// Drawing code
}
*/
-(instancetype)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
//1.全部選中或者全部不選中
_cellSelectBtn = [[UIButton alloc]init];
_cellSelectBtn.backgroundColor = BTNBACKGROUNDCOLOR;
_cellSelectBtn.layer.masksToBounds = YES;
_cellSelectBtn.layer.cornerRadius = 5;
_cellSelectBtn.titleLabel.font = [UIFont systemFontOfSize:14.0];
[self addSubview:_cellSelectBtn];
[_cellSelectBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.left.mas_equalTo(10);
make.centerY.equalTo(self.mas_centerY);
make.height.mas_equalTo(44);
make.width.mas_equalTo(140);
}];
//2.確定加入分組
_addBtn = [[UIButton alloc]init];
_addBtn.backgroundColor = BTNBACKGROUNDCOLOR;
_addBtn.layer.masksToBounds = YES;
_addBtn.layer.cornerRadius = 5;
_addBtn.titleLabel.font = [UIFont systemFontOfSize:14.0];
[self addSubview:_addBtn];
[_addBtn mas_makeConstraints:^(MASConstraintMaker *make) {
make.right.mas_equalTo(-10);
make.centerY.equalTo(self.mas_centerY);
make.width.mas_equalTo(140);
make.height.mas_equalTo(44);
}];
[_addBtn setTitle:@"加入分組" forState:UIControlStateNormal];
[_cellSelectBtn setTitle:@"全選" forState:UIControlStateNormal];
[_cellSelectBtn addTarget:self action:@selector(btnclickedSelect) forControlEvents:UIControlEventTouchUpInside];
[_addBtn addTarget:self action:@selector(btnclicked) forControlEvents:UIControlEventTouchUpInside];
}
return self;
}
- (void)awakeFromNib {
// Initialization code
}
-(void)btnclickedSelect{
NSLog(@"全選按鈕被點選");
[self.delegate myTabVAddClick:_cellSelectBtn];
}
-(void)btnclicked
{
NSLog(@"加入分組按鈕被點選");
[self.delegate myTabVAddClick:_addBtn];
}