/* * Copyright (C) 2017 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.settings.widget; import android.content.Context; import android.util.AttributeSet; import android.view.View; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputConnection; import android.view.inputmethod.InputMethodManager; import android.widget.EditText; public class ImeAwareEditText extends EditText { private boolean mHasPendingShowSoftInputRequest; final Runnable mRunShowSoftInputIfNecessary = () -> showSoftInputIfNecessary(); public ImeAwareEditText(Context context) { super(context, null); } public ImeAwareEditText(Context context, AttributeSet attrs) { super(context, attrs); } public ImeAwareEditText(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } public ImeAwareEditText(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { super(context, attrs, defStyleAttr, defStyleRes); } /** * This method is called back by the system when the system is about to establish a connection * to the current input method. * *
This is a good and reliable signal to schedule a pending task to call * {@link InputMethodManager#showSoftInput(View, int)}.
* * @param editorInfo context about the text input field. * @return {@link InputConnection} to be passed to the input method. */ @Override public InputConnection onCreateInputConnection(EditorInfo editorInfo) { final InputConnection ic = super.onCreateInputConnection(editorInfo); if (mHasPendingShowSoftInputRequest) { removeCallbacks(mRunShowSoftInputIfNecessary); post(mRunShowSoftInputIfNecessary); } return ic; } private void showSoftInputIfNecessary() { if (mHasPendingShowSoftInputRequest) { final InputMethodManager imm = getContext().getSystemService(InputMethodManager.class); imm.showSoftInput(this, 0); mHasPendingShowSoftInputRequest = false; } } public void scheduleShowSoftInput() { final InputMethodManager imm = getContext().getSystemService(InputMethodManager.class); if (imm.isActive(this)) { // This means that ImeAwareEditText is already connected to the IME. // InputMethodManager#showSoftInput() is guaranteed to pass client-side focus check. mHasPendingShowSoftInputRequest = false; removeCallbacks(mRunShowSoftInputIfNecessary); imm.showSoftInput(this, 0); return; } // Otherwise, InputMethodManager#showSoftInput() should be deferred after // onCreateInputConnection(). mHasPendingShowSoftInputRequest = true; } }