Use OC and Swift to create system-brought refresh interfaces

Use OC and Swift to create system-brought refresh interfaces

One: Swift Refresh interface code:

Import UIKit

Class Viewcontroller:uitableviewcontroller {

Data sources for display
var _datasource:[string] = []

Load more states Steam wheel
var _aiv:uiactivityindicatorview!

Override Func Viewdidload () {
Super.viewdidload ()
Additional setup after loading the view, typically from a nib.

Underlying data in the data source
For I in 0...2 {

_datasource.append ("\ (i)")
}

//initial drop-down refresh control
Self. Refreshcontrol = Uirefreshcontrol ()
Self. Refreshcontrol?. Attributedtitle = nsattributedstring(String: "Pull to Refresh")
Self.refreshcontrol?. Tintcolor = Uicolor.greencolor ()
Self.refreshcontrol?. AddTarget (Self, Action: "Refresh", forControlEvents:.) valuechanged)

Load more buttons in the background view
var Tablefooterview:uiview = UIView ()
Tablefooterview.frame = CGRectMake (0, 0, Self.view.bounds.size.width, 44)
Tablefooterview.backgroundcolor = Uicolor.greencolor ()
Self.tableView.tableFooterView = Tablefooterview

Load more Press-buttons
Let loadmorebtn = UIButton ()
Loadmorebtn.frame = CGRectMake (0, 0, Self.view.bounds.width, 44)
Loadmorebtn.settitle ("Load More", forstate:. Normal)
Loadmorebtn.settitlecolor (Uicolor.lightgraycolor (), forstate:. Normal)
Loadmorebtn.addtarget (Self, Action: "Loadmore:", forControlEvents:. Touchupinside)
Tablefooterview.addsubview (LOADMOREBTN)

Load more states Steam wheel
_aiv = Uiactivityindicatorview (activityindicatorstyle:. Gray)
_aiv.center = Loadmorebtn.center
Tablefooterview.addsubview (_AIV)
}

//Load More methods
Func Loadmore (Sender:uibutton) {

Sender.hidden = True
_aiv.startanimating ()

Dispatch_async (dispatch_get_global_queue (0, 0), {()-Void in

Self._datasource.append ("\ (Self._datasource[self._datasource.count-1].toint ()! + 1) ")

Dispatch_async (Dispatch_get_main_queue (), {(), Void in

Sleep (1)

Self._aiv.stopanimating ()
Sender.hidden = False

Self.tableView.reloadData ()
})
})
}

//drop-down Refresh method
Func Refresh () {

If Self.refreshcontrol?. refreshing = = true {

Self.refreshcontrol?. Attributedtitle = nsattributedstring (string: "Loading ...")
}

Dispatch_async (dispatch_get_global_queue (0, 0), {()-Void in

Self._datasource.insert ("\ (Self._datasource[0].toint ()! -1) ", atindex:0)

Dispatch_async (Dispatch_get_main_queue (), {(), Void in

Sleep (1)

Self.refreshcontrol?. Endrefreshing ()
Self.refreshcontrol?. Attributedtitle = nsattributedstring (string: "Pull to Refresh")

Self.tableView.reloadData ()
})
})
}

TableView DataSource
Override Func TableView (Tableview:uitableview, Numberofrowsinsection section:int), Int {

Return _datasource.count
}

Override Func TableView (Tableview:uitableview, Cellforrowatindexpath indexpath:nsindexpath), UITableViewCell {

Let identifier = "cell"

var cell = TableView. Dequeuereusablecellwithidentifier (identifier) as? UITableViewCell

if cell = = Nil {

Cell = UITableViewCell (style:. Default, Reuseidentifier:identifier)
}

Cell?. Textlabel?. Text = "\ (_datasource[indexpath.row])"

Return cell!
}
}

Second: OC Refresh interface Code:

#import "ViewController.h"

@interface Viewcontroller ()
{
Data source
Nsmutablearray * _DATASOURCE;

Wind Wheel
Uiactivityindicatorview * _AIV;
}

@end

@implementation Viewcontroller

-(Instancetype) Initwithnibname: (NSString *) Nibnameornil Bundle: (NSBundle *) Nibbundleornil
{
return self;
}

-(void) Viewdidload {
[Super Viewdidload];
Additional setup after loading the view, typically from a nib.

Initial data source
_datasource = [[Nsmutablearray alloc] init];

Basic data
for (int i=0; i<3; i++) {

[_datasource addobject:[nsstring stringwithformat:@ "%d", I]];
}

//Refresh control
SelF.refreshcontrol = [[Uirefreshcontrol alloc] init];
Self. refreshcontrol.attributedtitle = [[Nsattributedstring alloc] initwithstring: @ "Pull to Refresh"];
Self.refreshControl.tintColor = [Uicolor Greencolor];
[Self.refreshcontrol addtarget:self Action: @selector (refresh) forcontrolevents:uicontroleventvaluechanged];

Background view
UIView * Tablefooterview = [[UIView alloc] init];
Tablefooterview.frame = CGRectMake (0, 0, Self.view.bounds.size.width, 44);
Tablefooterview.backgroundcolor = [Uicolor Greencolor];
Self.tableView.tableFooterView = Tablefooterview;

Load more push buttons
UIButton * loadmorebtn = [[UIButton alloc] init];
Loadmorebtn.frame = CGRectMake (0, 0, Self.view.bounds.size.width, 44);
[Loadmorebtn settitle:@ "Load more" forstate:uicontrolstatenormal];
[Loadmorebtn Settitlecolor:[uicolor Lightgraycolor] forstate:uicontrolstatenormal];
[Loadmorebtn addtarget:self Action: @selector (Loadmore:) forcontrolevents:uicontroleventtouchupinside];
[Tablefooterview ADDSUBVIEW:LOADMOREBTN];

Wind Wheel
_AIV = [[Uiactivityindicatorview alloc] initwithactivityindicatorstyle:uiactivityindicatorviewstylegray];
_aiv.center = Loadmorebtn.center;
[Tablefooterview Addsubview:_aiv];
}

//Load More methods
-(void) Loadmore: (UIButton *) sender
{
Sender.hidden = YES;
[_aiv startanimating];

Dispatch_async (dispatch_get_global_queue (0, 0), ^{

[_datasource addobject: [NSString stringwithformat:@ "%d", [_datasource[_datasource.count-1] intValue] + 1]];

Dispatch_async (Dispatch_get_main_queue (), ^{

Sleep (1);

[_aiv stopanimating];
Sender.hidden = NO;

[Self.tableview Reloaddata];
});
});
}

//drop-down Refresh method
-(void) Refresh {

if (self.refreshControl.refreshing) {

Self.refreshControl.attributedTitle = [[Nsattributedstring alloc] initwithstring:@ "Loading ..."];
}

Dispatch_async (dispatch_get_global_queue (0, 0), ^{

[_datasource insertobject:[nsstring stringwithformat:@ "%d", [_datasource[0] intvalue]-1] atindex:0];

Dispatch_async (Dispatch_get_main_queue (), ^{

Sleep (1);

[Self.refreshcontrol endrefreshing];
Self.refreshControl.attributedTitle = [[Nsattributedstring alloc] initwithstring:@ "pull to Refresh"];

[Self.tableview Reloaddata];
});
});
}

TableView DataSource
-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) Section {

return _datasource.count;
}

-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) Indexpath {

static NSString * identifier = @ "cell";

UITableViewCell * cell = [TableView dequeuereusablecellwithidentifier:identifier];

if (cell = = nil) {
cell = [[UITableViewCell alloc] Initwithstyle:uitableviewcellstyledefault reuseidentifier:identifier];
}

Cell.textLabel.text = _datasource[indexpath.row];

return cell;
}

@end

Use OC and Swift to create system-brought refresh interfaces