12-29 buy the tail of the interface: load more designs

Just like yesterday's custom cell, you still need to customize a view to show Footerview

Similar content is not discussed, only the different parts are discussed

1. Design the content of the custom tail

There is a new point of knowledge that simulates clicking on the downloaded data from the network, then the button disappears, the display is loading, and then a new cell appears. This time a new function is needed, the code is as follows:

Dispatch_after (Dispatch_time (Dispatch_time_now, (int64_t) (3.0 * nsec_per_sec)), Dispatch_get_main_queue (), ^{

Self.loadMoreBtn.hidden = NO;

Self.loadingView.hidden = YES;

This function means delaying 3 seconds to perform the operation.

2. Set the agent for Footview and make controller the agent of Footview. Notifies the controller to load a new cell when the Footview internal button is clicked. The specific implementation code is as follows:

2.1 First to set the agent Footview, in the. h file: #import <UIKit/UIKit.h>

1. Defining the Proxy protocol

@class Czfootview;

@protocol czfooterviewdelegate <NSObject>

@optional

3.1 Declaring proxy methods

-(void) FOOTERVIEWDIDCLICKEDLOADMOREBTN: (Czfootview *) Footerview;

@end

@interface Czfootview:uiview

2. Defining Proxy Properties

@property (nonatomic, weak) id<czfooterviewdelegate> delegate;

+ (instancetype) Footview;

@end

In the. m file, when the Loadmorebtnclick method sends a message to the agent, it tells the agent to invoke the proxy method. The code is as follows:

2.2 Implementing the Proxy method in the controller's. m file

The actual results are as follows:

12-29 buy the tail of the interface: load more designs