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MainActivity.java
/* * 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.content.Context; 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; public class MainActivity extends AppCompatActivity { // [U+1F469] (WOMAN) + [U+200D] (ZERO WIDTH JOINER) + [U+1F4BB] (PERSONAL COMPUTER) private static final String WOMAN_TECHNOLOGIST = "\uD83D\uDC69\u200D\uD83D\uDCBB"; // [U+1F469] (WOMAN) + [U+200D] (ZERO WIDTH JOINER) + [U+1F3A4] (MICROPHONE) private static final String WOMAN_SINGER = "\uD83D\uDC69\u200D\uD83C\uDFA4"; static final String EMOJI = WOMAN_TECHNOLOGIST + " " + WOMAN_SINGER; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // TextView variant provided by EmojiCompat library final TextView emojiTextView = findViewById(R.id.emoji_text_view); emojiTextView.setText(getString(R.string.emoji_text_view, EMOJI)); // EditText variant provided by EmojiCompat library final TextView emojiEditText = findViewById(R.id.emoji_edit_text); emojiEditText.setText(getString(R.string.emoji_edit_text, EMOJI)); // Button variant provided by EmojiCompat library final TextView emojiButton = findViewById(R.id.emoji_button); emojiButton.setText(getString(R.string.emoji_button, EMOJI)); // Regular TextView without EmojiCompat support; you have to manually process the text final TextView regularTextView = findViewById(R.id.regular_text_view); EmojiCompat.get().registerInitCallback(new InitCallback(regularTextView)); // Custom TextView final TextView customTextView = findViewById(R.id.emoji_custom_text_view); customTextView.setText(getString(R.string.custom_text_view, EMOJI)); } private static class InitCallback extends EmojiCompat.InitCallback { private final WeakReference
mRegularTextViewRef; InitCallback(TextView regularTextView) { mRegularTextViewRef = new WeakReference<>(regularTextView); } @Override public void onInitialized() { final TextView regularTextView = mRegularTextViewRef.get(); if (regularTextView != null) { final EmojiCompat compat = EmojiCompat.get(); final Context context = regularTextView.getContext(); regularTextView.setText( compat.process(context.getString(R.string.regular_text_view, EMOJI))); } } } }