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How do I programmatically configure an EditText to allow:
Positive or negative integer values
Positive or negative decimal values
I am having a hard time finding what gets this working even with https://developer.android.com/reference/android/text/InputType.html
929
This example demonstrates how to set the input type for an Android EditText programmatically using Kotlin. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main. xml.
Just add a clarification: editText. setKeyListener(DigitsKeyListener. getInstance(true,true)); to enable decimals and negative numbers.
The android:inputType attribute allows you to specify various behaviors for the input method. Most importantly, if your text field is intended for basic text input (such as for a text message), you should enable auto spelling correction with the "textAutoCorrect" value.
Setting the InputType of an EditText tells the system keyboard what kind of input you are expecting. If your edit text is for inputting a phone number, then you want the keyboard to show numbers. It would be annoying for the user to have to manually switch to a numeric keyboard.
You can use this code:
EditText edt = new EditText(context);
edt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL); //for decimal numbers
edt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_SIGNED); //for positive or negative values
If together:
edt.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL | InputType.TYPE_NUMBER_FLAG_SIGNED);
If someone need, this is the answer in Kotlin:
et_text.inputType = InputType.TYPE_NUMBER_FLAG_SIGNED + InputType.TYPE_CLASS_NUMBER
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