Cell expansion in several ways

I. Inserting a new cell

Principle:

(1) Define whether to expand, and the subscript of the expanded cell

// whether to expand the @property (strong, nonatomic) Nsindexpath *selectedindexpath; // The subscript for the expanded cell

(2) Create two different cells

　

-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) Indexpath {UITableViewCell*cell; if(Self.isexpand && Self.selectedIndexPath.row < indexpath.row && Indexpath.row <= Self.selectedIndexPath.row + expandcount) {//Expand Cellcell = [TableView dequeuereusablecellwithidentifier:@"Csutomexpansioncell"Forindexpath:indexpath]; } Else{//Normal Cellcell = [TableView dequeuereusablecellwithidentifier:@"Customcell"Forindexpath:indexpath]; }    returncell;}

(3) Create the number of cells you need

if (Self.isexpand) {        return cellcount + expandcount;    }     return Cellcount;

(4) Click on the cell below to insert the cell you need to show (can expand multiple), click Delete again

- (void) TableView: (UITableView *) TableView Didselectrowatindexpath: (Nsindexpath *) Indexpath {if(!self.selectedindexpath) {Self.isexpand=YES; Self.selectedindexpath=Indexpath;        [Self.tavleview beginupdates]; [Self.tavleview insertrowsatindexpaths:[self IndexPathsForExpandRow:indexPath.row] Withrowanimation:        Uitableviewrowanimationtop];    [Self.tavleview endupdates]; } Else {        if(Self.isexpand) {if(Self.selectedindexpath = =Indexpath) {Self.isexpand=NO;                [Self.tavleview beginupdates]; [Self.tavleview deleterowsatindexpaths:[self IndexPathsForExpandRow:indexPath.row] Withrowanimation:                Uitableviewrowanimationtop];                [Self.tavleview endupdates]; Self.selectedindexpath=Nil; } Else if(Self.selectedIndexPath.row < Indexpath.row && Indexpath.row <= Self.selectedIndexPath.row +Expandcount) {                            } Else{Self.isexpand=NO;                [Self.tavleview beginupdates]; [Self.tavleview deleterowsatindexpaths:[self IndexPathsForExpandRow:self.selectedIndexPath.row] Withrowanimation:                Uitableviewrowanimationtop];                [Self.tavleview endupdates]; Self.selectedindexpath=Nil; }        }    }}#pragmamark-other-(Nsarray *) Indexpathsforexpandrow: (Nsinteger) row {Nsmutablearray*indexpaths =[Nsmutablearray array];  for(inti =1; I <= Expandcount; i++) {Nsindexpath*idxpth = [Nsindexpath Indexpathforrow:row + i insection:0];    [Indexpaths addobject:idxpth]; }    return[indexpaths copy];}

Two. Inserting a cell into a different section

Principle:

(1) Define whether to expand, and the subscript of the expanded cell

(2) Create two different cells

-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) Indexpath {UITableViewCell*cell; if(Self.isexpand && self.selectedIndexPath.section = = indexpath.section) {//Expand Cellcell = [TableView dequeuereusablecellwithidentifier:@"Csutomexpansioncell"Forindexpath:indexpath]; } Else{//Normal Cellcell = [TableView dequeuereusablecellwithidentifier:@"Customcell"Forindexpath:indexpath]; }        returncell;}

(3) Create the number of cell,section you need to show in normal state

-(Nsinteger) Numberofsectionsintableview: (UITableView *) tableView {    return  sectioncount;}

(4) Change the number of cells that expand the section when you expand

-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) Section {    if (self.isexpand && self.selectedIndexPath.section = = Section )        {return1 // Multiple Quantities     }    return1;}

(5) Click on the cell's section to insert the cell you need to show (can expand multiple), click Delete again

- (void) TableView: (UITableView *) TableView Didselectrowatindexpath: (Nsindexpath *) Indexpath {if(!self.selectedindexpath) {Self.isexpand=YES; Self.selectedindexpath=Indexpath;        [Self.tableview beginupdates]; [Self.tableview insertrowsatindexpaths:[self indexPathsForExpandSection:indexPath.section] Withrowanimation:        Uitableviewrowanimationtop];    [Self.tableview endupdates]; } Else {        if(Self.isexpand) {if(Self.selectedindexpath = =Indexpath) {Self.isexpand=NO;                [Self.tableview beginupdates]; [Self.tableview deleterowsatindexpaths:[self indexPathsForExpandSection:indexPath.section] Withrowanimation:                Uitableviewrowanimationtop];                [Self.tableview endupdates]; Self.selectedindexpath=Nil; } Else if(Self.selectedIndexPath.row! = Indexpath.row && indexpath.section <=self.selectedIndexPath.section) {//Select The Expand Cell, do the relating dealing.}Else{Self.isexpand=NO;                [Self.tableview beginupdates]; [Self.tableview deleterowsatindexpaths:[self IndexPathsForExpandSection:self.selectedIndexPath.section]                Withrowanimation:uitableviewrowanimationtop];                [Self.tableview endupdates]; Self.selectedindexpath=Nil; }        }    }}-(Nsarray *) Indexpathsforexpandsection: (nsinteger) Section {Nsmutablearray*indexpaths =[Nsmutablearray array];  for(inti =1; I <= Expandcount; i++) {Nsindexpath*idxpth =[Nsindexpath indexpathforrow:i insection:section];    [Indexpaths addobject:idxpth]; }    return[indexpaths copy];}

Three. Change the cell's height

Principle:

(1) Define whether to expand, and the subscript of the expanded cell

(2) Create a cell, split the upper and lower halves

(3) The height of the cell is created, the height of the normal case and the height after expansion

-(CGFloat) TableView: (UITableView *) TableView Heightforrowatindexpath: (Nsindexpath *) indexpath {      If (self.isexpand && Self.selectedindexpath = = Indexpath)        {return121 ;     Else {        return;    }}

(4) Click on the cell to refresh the clicked cell

- (void) TableView: (UITableView *) TableView Didselectrowatindexpath: (Nsindexpath *) Indexpath {if(!self.selectedindexpath) {Self.isexpand=YES; Self.selectedindexpath=Indexpath;        [Self.tableview beginupdates];        [Self.tableview Reloadrowsatindexpaths:@[indexpath] withrowanimation:uitableviewrowanimationfade];    [Self.tableview endupdates]; } Else {        if(Self.isexpand) {if(Self.selectedindexpath = =Indexpath) {Self.isexpand=NO;                [Self.tableview beginupdates];                [Self.tableview Reloadrowsatindexpaths:@[indexpath] withrowanimation:uitableviewrowanimationfade];                [Self.tableview endupdates]; Self.selectedindexpath=Nil; } Else{Self.isexpand=NO;                [Self.tableview beginupdates];                [Self.tableview Reloadrowsatindexpaths:@[self.selectedindexpath] withrowanimation:uitableviewrowanimationfade];                [Self.tableview endupdates]; Self.selectedindexpath=Nil; }        }    }}

Four. Customize section, click to expand the appropriate cell (write in the afternoon ...)

Demo Link

Http://pan.baidu.com/s/1c0YQDNE

Cell expansion in several ways