IOS thirdkeyboard Develop (APP Extension)

If you need to develop a third-party keyboard first you need to know Apple official documentation https://developer.apple.com/library/ios/documentation/General/Conceptual/ Extensibilitypg/keyboard.html

Then suggest a look at appextension

Http://www.cocoachina.com/ios/20140918/9677.html

The keyboard app belongs to your hostapp so if you want to understand appgroups to do two inter-application information transfer

How to use

Nsuserdefaults *keyboarddefaults = [[Nsuserdefaults alloc] initwithsuitename:appgroups];

Appgroups is the field we set is the same as the field where the AppGroup is added

Xcode will give us a class for generating keyboard in this class we can do third-party keyboards

1. It is recommended to use AutoLayout as a constraint in this class

2.

CGFloat _expandedheight = 256;

Nslayoutconstraint *_heightconstraint = [Nslayoutconstraint constraintWithItem:self.view attribute:   Nslayoutattributeheight relatedby:nslayoutrelationequal Toitem:nil Attribute:nslayoutattributenotanattribute MULTIPLIER:0 constant: _expandedheight];

[Self.view addconstraint: _heightconstraint];

This method can set the keyboard height

The problem I encountered: Invalid call in Updatecontraint

3. Enter text: Call the Protocol method Textdocumentproxy.

-(BOOL) HasText;

-(void) InsertText: (NSString *) text; Enter text

-(void) deletebackward;//Delete text

Our keyboard must have a button for the next input method to refer to the native earth button if it is to be audited.

Call

-(void) Advancetonextinputmode

This method can be done

Apple's open APIs are a good choice for you to look at your documents.

4 also encountered a problem: temporarily unable to jump from their keyboard side to Mainapp

Previous use of WebView is possible, but the recommendation on StackOverflow is disabled after Apple updates

I hope someone who solves this problem can tell me.

5 Our Organization QQ group No. 248458280 period to everyone's visit together to learn to grow together

IOS thirdkeyboard Develop (APP Extension)