ios - How to create a custom base class which has a TableView, a Search & some edit functions, so as other class can inherit from it -

i have many uitableviewcontroller classes in project. have,

• mostly similar functions including search, edit, pull refresh.
• a tableview
• a uisearchbar
• a uisearchdisplaycontroller.

as don't want re-write these functions each class, how create custom base class has these function.

i don't know how this?

any tutorial link or guidance of help.

you need follow simple inheritance concept of oops.

so here simple idea proceed.

1. create new file, name mycustomtablebase & type uitableviewcontroller in subclass of section in dialog.
2. now provide table related stuff & public method & objects in base class.
3. now create new file again step1 & name mynewhomecontroller & type mycustomtablebase in subclass of section in dialog.

4. once done file, can check mynewhomecontroller.h file inheritance path this:

   #import "mycustomtablebase.h" @interface mynewhomecontroller : mycustomtablebase @end 

now how design base & subsequently inherit (subclass) child classes out of it.

hope helps.

updated code

please note: here base call derrived uiviewcontroller, not uitableviewcontroller

baseviewcontroller.h

@interface btbaseviewcontroller : uiviewcontroller {  uitableviewstyle _tableviewstyle;  uisearchdisplaycontroller *_searchcontroller; } @property (nonatomic, strong) uitableview *tableview; @property (nonatomic, strong) uisearchbar *searchbar;  -(void)renderpadui;   // should implemented derived class -(void)renderphoneui; // should implemented derived class 

baseviewcontroller.m

- (void)viewdidload {     [super viewdidload];     [self renderui]; }   -(void)renderui{      // additional setup after loading view.     if ([self respondstoselector:@selector(edgesforextendedlayout)])     self.edgesforextendedlayout = uirectedgenone;      if(is_ipad) {         [self renderpadui];     }else {         [self renderphoneui];     } }  -(void)enablesearchsetup:(bool)show { _searchbar = [[uisearchbar alloc] initwithframe:cgrectmake(0.0f, 0.0f, self.view.bounds.size.width, 0)];     _searchbar.autoresizingmask = uiviewautoresizingflexiblewidth;     _searchbar.delegate = self;     _searchbar.placeholder = @"search keyword";     [_searchbar sizetofit];      // create search controller     _searchcontroller = [[uisearchdisplaycontroller alloc] initwithsearchbar:_searchbar contentscontroller:self];     _searchcontroller.searchresultsdatasource = self;     _searchcontroller.searchresultsdelegate   = self;     _searchcontroller.delegate                = self;      // add tableview     _tableview = [[uitableview alloc] initwithframe:cgrectmake(0, 0, self.view.frame.size.width, self.view.frame.size.height) style:_tableviewstyle];     _tableview.delegate         = self;     _tableview.datasource       = self;     _tableview.autoresizingmask = (uiviewautoresizingflexiblewidth | uiviewautoresizingflexibleheight);     [self.view addsubview:_tableview];      // important line     _tableview.tableheaderview = _searchbar;  } 

now in of derived class class bthomeviewcontroller

bthomeviewcontroller.h

#import "btbaseviewcontroller.h"  @interface bthomeviewcontroller : btbaseviewcontroller  @end 

bthomeviewcontroller.m

- (void)viewdidload {     [super viewdidload];     // additional setup after loading view. }  // need not call method class. base/parent class invoke method, create instane of class.  -(void)renderphoneui {    [self enablesearchsetup:yes]; // base version } 

also

• note have implement -(void)renderphoneui method base class expecting child implement this. or else remove base then.

• you have implement delegates & datasource uitableview & uisearchbar, because haven't provided implementation of in base. if make give implementation of delegates in base class, derived class can refer same delegate's if not implemented in derived class.

• is_ipad custom macro detect device version using uidevice class. search it, definition.

• this approach gives single code handles tableview implementation search in base class. if want customization tableview & search bar in derived class, can customization in specific class's renderphoneui method.

• i suggest implement delegates in base class itself. tableview & search, across app consistent. keep playing/updating datasource.

• if tableview different each class, in terms of cellforrowatindexpath implementation, provide implementation of cellforrowatindexpath method in intended class.

here sample code.

i hope have made more of things clean & clear.

hope helps.