RadDataForm Decimal editor doesn't allow to input negative value

[bhcuong2008]

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Please, provide the details below:

Tell us about the problem

RadDataForm Decimal editor doesn't allow negative value

Which platform(s) does your issue occur on?

Android API 21, 27, 28. iOS not tested

Please provide the following version numbers that your issue occurs with:

• Progress NativeScript UI plugin version: nativescript-ui-dataform@^6.0.0
• CLI: 6.7.4
• Cross-platform modules: ^6.5.8
• Runtime(s): 6.5.1

Please tell us how to recreate the issue in as much detail as possible.

1. Create a source object with a property of type number
2. Create dataform with above source, specify that field as Decimal editor type.
3. Then run app, only input positive float number inside that editor.

Or run samples at https://github.com/ProgressNS/nativescript-ui-samples

Is there code involved? If so, please share the minimal amount of code needed to recreate the problem.

(You can paste entire code snippets, link to playground demo or attach a runnable project)

[bhcuong2008]

inside source of TNSDataForm-release.aar, I found that it's limited by this in file DataFormDecimalEditor.class:

protected void initEditor(View editor, EntityProperty property) {
        super.initEditor(editor, property);
        this.decimalSeparator = DecimalFormatSymbols.getInstance(Locale.getDefault()).getDecimalSeparator();
        this.numberFormat = NumberFormat.getInstance();
        this.numberFormat.setMaximumFractionDigits(127);
        EditText coreEditor = (EditText)editor;
        coreEditor.setInputType(12290);
=>   coreEditor.setKeyListener(DigitsKeyListener.getInstance("0123456789" + this.decimalSeparator));
}

I think this is the reason Decimal editor does not accept key '-' for negative number.