Workarounds for iOS Keyboard occlusion issues

One of the workarounds for keyboard occlusion input boxes in iOS development--Keyboard notifications before dealing with this problem, always in the trigger input box Edit Event keyboard pop-up, the current view as a whole upward movement, the end of editing and the overall downward shift, time-consuming and inefficient.

On the Internet to see the use of Keyboard notification method is very convenient, so wrote a demo for beginners reference!

1. In the VIEWCONTROLLER.M file statement

"ViewController.h"@interface Viewcontroller () <uitableviewdelegate,uitableviewdatasource, Uitextfielddelegate>@property (nonatomic,strong) UITableView *tableview;  Custom table TableView@end@implementation viewcontroller       

2. Initialize and add notification Viewer

1-(void) Viewdidload {2[Super Viewdidload];4 Self.tableview =[[UITableView alloc] Initwithframe:[uiscreen mainscreen].bounds Style:uitableviewstyleplain];5 Self.tableview.Delegate =Self6 Self.tableView.dataSource = self;  [Self.view addsubview:self.tableview]; 8  9 // The keyboard will be displayed Span style= "color: #008080;" >10 [[Nsnotificationcenter defaultcenter] addobserver:self selector: @selector (boardwillshow:) Name: Uikeyboardwillshownotification object:nil];11 // The keyboard is about to end when the notification 12 [[ Nsnotificationcenter Defaultcenter] addobserver:self selector: @selector (boarddidhide:) Name: Uikeyboarddidhidenotification object:nil];13}                 

3. How to implement notification response

1-(void) Boardwillshow: (Nsnotification *) sender{2//Get the size of the keyboard3 CGRect keyboardrect=[Sender.userinfo[uikeyboardframeenduserinfokey] cgrectvalue];// When the keyboard is going to be displayed, Change the bottom margin of the tableView to the height of the keyboard  5 Self.tableView.contentInset = Uiedgeinsetsmake (0, 0, KeyBoardRect.size.height, 0); } 7  8-(void) Boarddidhide: (nsnotification *) sender{< Span style= "color: #008080;" > 9 //10 self.tableView.contentInset = uiedgeinsetszero;< Span style= "color: #008080;" >11}                 

4.UITextField Agent Event (click the Return button in the keyboard to hide the keyboard)

1-(BOOL) Textfieldshouldreturn: (Uitextfield *) textfield{2     // cancels the first responder of the current input box [TextField Resignfirstresponder]; return YES;  5}       

Proxy method for 5.tableView

-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (Nsinteger) section{Return15;} -(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) indexpath{static NSString *ider =@"Cell"; UITableViewCell *cell =[TableView Dequeuereusablecellwithidentifier:ider];if (!Cell) {cell =[[UITableViewCell alloc] Initwithstyle:uitableviewcellstyledefault Reuseidentifier:ider]; } Uitextfield *TF = [[Uitextfield alloc] Initwithframe:cgrectmake (5, (+   )]; Tf.placeholder = @ " Please enter "; Tf. delegate =self; // text box add Agent [Cell.contentview ADDSUBVIEW:TF]; cell.textLabel.text = @ " test "; return Cell;}
@end

6. End!

Workarounds for iOS Keyboard occlusion issues