How to enable keyboard on touch after disabling it with setTextIsSelectable

Question

I am using a custom in-app keyboard, so I need to disable the system keyboard. I can do that with

editText.setShowSoftInputOnFocus(false);

Answer 1

Short answer

Doing the following will reverse the effects of setTextIsSelectable(true) and allow the keyboard to show again when the EditText receives focus.

editText.setTextIsSelectable(false);
editText.setFocusable(true);
editText.setFocusableInTouchMode(true);
editText.setClickable(true);
editText.setLongClickable(true);
editText.setMovementMethod(ArrowKeyMovementMethod.getInstance());
editText.setText(editText.getText(), TextView.BufferType.SPANNABLE);

Explanation

The thing that prevents the keyboard from showing is isTextSelectable() being true. You can see that here (thanks to @adneal).

The source code for setTextIsSelectable is

public void setTextIsSelectable(boolean selectable) {
    if (!selectable && mEditor == null) return; // false is default value with no edit data

    createEditorIfNeeded();
    if (mEditor.mTextIsSelectable == selectable) return;

    mEditor.mTextIsSelectable = selectable;
    setFocusableInTouchMode(selectable);
    setFocusable(selectable);
    setClickable(selectable);
    setLongClickable(selectable);

    // mInputType should already be EditorInfo.TYPE_NULL and mInput should be null

    setMovementMethod(selectable ? ArrowKeyMovementMethod.getInstance() : null);
    setText(mText, selectable ? BufferType.SPANNABLE : BufferType.NORMAL);

    // Called by setText above, but safer in case of future code changes
    mEditor.prepareCursorControllers();
}

Thus, the code in the short answer section above first sets mTextIsSelectable to false with setTextIsSelectable(false) and then undoes all of the other side effects one-by-one.