2015/10/4 IOS Note Details Simple-agent process UITableView

One, simple-agent process

1, create an agent

@class Tgfootview;

@protocol tgfootviewdelegate <NSObject>

@optional Optional whether to implement

The download button for the view is clicked

-(void) Tgfootviewdiddownloadbuttonclick: (Tgfootview *) Footview;

@end

@interface Tgfootview:uiview

If a proxy uses a strong reference, a circular reference is generated, causing the controller and child views to be freed, causing a memory leak.

@property (nonatomic,weak) ID <TgFootViewDelegate> delegate;

@end

2. Compliance with agreements

<TgFootViewDelegate>

3, setting up the proxy

View controller becomes a proxy for footer

Footer.delegate = self;

4, the controller implements the proxy method

-(void) Tgfootviewdiddownloadbuttonclick: (Tgfootview *) Footview

{

}

5, determine whether the agent implements the Protocol method

if ([Self.delegate respondstoselector: @selector (Tgfootviewdiddownloadbuttonclick:)]) {

Perform

[Self.delegate tgfootviewdiddownloadbuttonclick:self];

}

Ii. several agent methods of UITableView

1, as long as the implementation of this method, will be able to support gesture drag Delete, delete the need to do their own!

Uitableviewcelleditingstylenone,

Uitableviewcelleditingstyledelete, deleting

Uitableviewcelleditingstyleinsert add

-(void) TableView: (UITableView *) TableView Commiteditingstyle: (uitableviewcelleditingstyle) Editingstyle Forrowatindexpath: (Nsindexpath *) Indexpath

{

if (Editingstyle = = Uitableviewcelleditingstyledelete) {

NSLog (@ "to delete");

MVC = data is stored in the model

1. Delete the Indexpath data in Self.datalist

[Self.datalist RemoveObjectAtIndex:indexPath.row];

NSLog (@ "%@", self.datalist);

2. Refresh the table (reload the data)

Reload all data

[Self.tableview Reloaddata];

Deleterowsatindexpaths to animate a table control to delete a specified row

[Self.tableview Deleterowsatindexpaths:@[indexpath] withrowanimation:uitableviewrowanimationmiddle];

} else if (Editingstyle = = Uitableviewcelleditingstyleinsert) {

NSLog (@ "To add data");

1. Adding data to an array

[Self.datalist insertobject:@ "Wangxiao" AtIndex:indexPath.row + 1];

2. Refresh the table

[Self.tableview Reloaddata];

Insertrowsatindexpaths the Table control animation to add the specified row in the specified Indexpath

Create a new Indexpath

Nsindexpath *path = [Nsindexpath IndexPathForRow:indexPath.row + 1 inSection:indexPath.section];

[Self.tableview Insertrowsatindexpaths:@[path] withrowanimation:uitableviewrowanimationmiddle];

}

}

2. As long as you implement this method, you can display the drag control

-(void) TableView: (UITableView *) TableView Moverowatindexpath: (Nsindexpath *) Sourceindexpath Toindexpath: ( Nsindexpath *) Destinationindexpath

{

Interface Data UITableView has been completed.

Adjusting the data can

[Self.datalist ExchangeObjectAtIndex:sourceIndexPath.row WithObjectAtIndex:destinationIndexPath.row];

1. Remove the source from the array

ID Source = Self.datalist[sourceindexpath.row];

2. Remove the source from the array

[Self.datalist RemoveObjectAtIndex:sourceIndexPath.row];

NSLog (@ "%@", self.datalist);

3. Insert the source into the array at the target location

[Self.datalist Insertobject:source AtIndex:destinationIndexPath.row];

NSLog (@ "%@", self.datalist);

}

3, return to edit style, if not implement this method, the default is to delete

-(Uitableviewcelleditingstyle) TableView: (UITableView *) TableView Editingstyleforrowatindexpath: (Nsindexpath *) Indexpath

{

if (indexpath.row% 2) {

return uitableviewcelleditingstyleinsert;

} else {

return uitableviewcelleditingstyledelete;

}

return uitableviewcelleditingstyleinsert;

}

4,cell will be called when it is selected or unchecked

If you are a custom cell control, all child controls should be added to the Contentview

-(void) setselected: (BOOL) selected animated: (bool) Animated {

[Super setselected:selected animated:animated];

Configure The view for the selected state

if (selected) {

Self.contentView.backgroundColor = [Uicolor Redcolor];

} else {

Self.contentView.backgroundColor = [Uicolor Greencolor];

}

}

5, refresh the data

1, [Self.tableview reloaddata];

2, create a new Indexpath

Nsindexpath *path = [Nsindexpath indexpathforrow:self.tgs.count-1 insection:0];

Add to

[Self.tableview Insertrowsatindexpaths:@[path] withrowanimation:uitableviewrowanimationmiddle];

Roll to the end.

[Self.tableview Scrolltorowatindexpath:path Atscrollposition:uitableviewscrollpositionbottom Animated:YES];

6,

Self.tableView.tableHeaderView = [[[NSBundle Mainbundle] loadnibnamed:@ "Headerview" Owner:nil Options:nil] Lastobject ];

2015/10/4 IOS Note details Simple-agent process UITableView