iPhone UIWebview: How to force a numeric keyboard? Is it possible?

Question

I\'m experimenting with PhoneGap to develop some iPhone apps. PhoneGap basically wraps a UIWebView - it works well. The problem is the my app has several input fields that

Answer 1

iOs has a numeric keyboard UIKeyboardTypeNumbersAndPunctuation, but this can't be called from HTML (https://developer.apple.com/library/ios/documentation/StringsTextFonts/Conceptual/TextAndWebiPhoneOS/KeyboardManagement/KeyboardManagement.html)

since on the "tel" keyboard the punctuation is missing you have to create this on your own. Since ios8 custom keyboards are available. Or if you just need the punctuation you can add a button (How to add a 'Done' button to numpad keyboard in iOS) to the numeric keyboard which pops up when you specify your input field with type="number" pattern="[0-9]*" .

To do so: the objective-c code.

-(void)keyboardWillHide:(NSNotification *)note
{
    [self.donekeyBoardBtn removeFromSuperview];
    [self.webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat: @"document.activeElement.blur()"]];
}

- (void)keyboardWillShow:(NSNotification *)note
{
    [UIView setAnimationsEnabled:NO];
    // create custom button
    //UIKeyboardTypeNumberPadin
    //type="number" pattern="[0-9]*"
    UIButton *extryB= [UIButton buttonWithType:UIButtonTypeRoundedRect];
    extryB.frame = CGRectMake(0, self.view.frame.size.height+150, 100, 50);
    extryB.backgroundColor = [UIColor colorWithRed:204.0f/255.0f
                                             green:210.0f/255.0f
                                              blue:217.0f/255.0f
                                             alpha:1.0f];
    extryB.adjustsImageWhenHighlighted = NO;
    extryB.titleLabel.font = [UIFont systemFontOfSize:14.0];
    [extryB setTitle:@"," forState:UIControlStateNormal];
    [extryB setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [extryB addTarget:self action:@selector(extryBpressed) forControlEvents:UIControlEventTouchUpInside];



self.donekeyBoardBtn = extryB;

// locate keyboard view
UIWindow* tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
UIView* keyboard;
for(int i=0; i<[tempWindow.subviews count]; i++)
{
    keyboard = [tempWindow.subviews objectAtIndex:i];
    // keyboard view found; add the custom button to it

    if([[keyboard description] hasPrefix:@"

Then you should add the a method which can be accessed application wide in your JS code.

simulateKeyPress: function(k) {
        var press = jQuery.Event("keypress");

        press.which = k;
        // place the id of your most outer html tag here
        $("#body").trigger(press);
            // just needed because my active element has a child element where the value should be placed in
                var id = document.activeElement.id.indexOf("-");
                if(id != -1){
                    var currentTf = sap.ui.getCore().byId(document.activeElement.id.split("-")[0]);
                    //append the value and set it (my textfield has a method setValue())
                    var currentTfValue = currentTf.getValue();
                    currentTf.setValue(currentTfValue + k);
                }
            },