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MainActivity.kt
/* * 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.example.android.emojicompat import android.os.Bundle import android.support.text.emoji.EmojiCompat import android.support.v7.app.AppCompatActivity import android.widget.TextView import java.lang.ref.WeakReference class MainActivity : AppCompatActivity() { companion object { // [U+1F469] (WOMAN) + [U+200D] (ZERO WIDTH JOINER) + [U+1F4BB] (PERSONAL COMPUTER) private val WOMAN_TECHNOLOGIST = "\uD83D\uDC69\u200D\uD83D\uDCBB" // [U+1F469] (WOMAN) + [U+200D] (ZERO WIDTH JOINER) + [U+1F3A4] (MICROPHONE) private val WOMAN_SINGER = "\uD83D\uDC69\u200D\uD83C\uDFA4" @JvmField val EMOJI = WOMAN_TECHNOLOGIST + " " + WOMAN_SINGER } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) // TextView variant provided by EmojiCompat library val emojiTextView: TextView = findViewById(R.id.emoji_text_view) emojiTextView.text = getString(R.string.emoji_text_view, EMOJI) // EditText variant provided by EmojiCompat library val emojiEditText: TextView = findViewById(R.id.emoji_edit_text) emojiEditText.text = getString(R.string.emoji_edit_text, EMOJI) // Button variant provided by EmojiCompat library val emojiButton: TextView = findViewById(R.id.emoji_button) emojiButton.text = getString(R.string.emoji_button, EMOJI) // Regular TextView without EmojiCompat support; you have to manually process the text val regularTextView: TextView = findViewById(R.id.regular_text_view) EmojiCompat.get().registerInitCallback(InitCallback(regularTextView)) // Custom TextView val customTextView: TextView = findViewById(R.id.emoji_custom_text_view) customTextView.text = getString(R.string.custom_text_view, EMOJI) } private class InitCallback(regularTextView: TextView) : EmojiCompat.InitCallback() { val regularTextViewRef = WeakReference(regularTextView) override fun onInitialized() { val regularTextView = regularTextViewRef.get() if (regularTextView != null) { val compat = EmojiCompat.get() val context = regularTextView.context regularTextView.text = compat.process( context.getString(R.string.regular_text_view, EMOJI)) } } } }