Show soft keyboard for dialog

问题

I am displaying a dialog with an edittext view. However, the softkeyboard will open only if the user presses inside the editview. So I tried calling an InputMethodManager with the following code.

InputMethodManager imm =
 (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(dialogField,0);

The dialogField is the input field. However, when exactly am I supposed to do this? I tried it in the onStart() method of the dialog, but nothing happens. I also tried requesting the focus for the dialogField before, but that changes nothing.

I also tried this code

dialogField.setOnFocusChangeListener(new View.OnFocusChangeListener()
{
    public void onFocusChange (View v, boolean hasFocus)
    {
        if (hasFocus)
        {
            Main.log("here");
            dialogInput.getWindow().setSoftInputMode(
              WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
            /*
                InputMethodManager mgr =
                  (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                mgr.showSoftInput(dialogField,0);
            */
        }
    }
});

in both versions. But no soft keyboard would like to appear. The Main.log is just a log, which shows me that the function is actually called. And yes, it is called.

I could get the keyboard with the SHOW_FORCED flag before the dialog opens. But then it will not close on exit. And I can only do that BEFORE I show the dialog. Inside any callbacks it does not work either.

回答1:

Awesome question, I was trying to do that too and found a solution.

Using the dialog builder class AlertDialog.Builder you will have to invoke the dialog like this:

AlertDialog.Builder builder = new AlertDialog.Builder();
AlertDialog dialog;

builder.set...

dialog = builder.create();
dialog.getWindow().setSoftInputMode(LayoutParams.SOFT_INPUT_STATE_VISIBLE);
dialog.show();

This worked fine for me.

Note: you must import android.view.WindowManager.LayoutParams; for the constant value there.

回答2:

 AlertDialog dialog = new AlertDialog.Builder(this).create();
    dialog.show();
    Window window = dialog.getWindow();
    window.clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
    window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);

回答3:

Kotlin

Here's the tested code.

val dialog = AlertDialog.Builder(requireContext()).apply {
    setTitle(…)
    setView(editText)
    setPositiveButton(…)
    setNegativeButton(…)
}
val window = dialog.show().window
window?.clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE or WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM)
window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE)

Make sure you access the window property from show() method. Getting window from create() method was returning null for me, so the keyboard wasn't showing.

Import AlertDialog from androidx.appcompat.app.AlertDialog. Import WindowManager from android.view.

回答4:

It seems to be impossible.

So I made a new Activity instead of the Dialog and let the user edit there. Note, that in activities you can set the keyboard mode in the manifest file. I set it to show, when the activity opens.

Also note, that testing on the emulator with hard keys will not open the keyboard for SHOW_IMPLICIT or 0 flag.

来源：https://stackoverflow.com/questions/4258623/show-soft-keyboard-for-dialog

标签

android

android-softkeyboard

android-sdk-2.1