1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.emojicompat; 18 19 import android.content.Context; 20 import android.support.annotation.Nullable; 21 import android.support.text.emoji.widget.EmojiTextViewHelper; 22 import android.support.v7.widget.AppCompatTextView; 23 import android.text.InputFilter; 24 import android.util.AttributeSet; 25 26 27 /** 28 * A sample implementation of custom TextView. 29 * 30 * <p>You can use {@link EmojiTextViewHelper} to make your custom TextView compatible with 31 * EmojiCompat.</p> 32 */ 33 public class CustomTextView extends AppCompatTextView { 34 35 private EmojiTextViewHelper mEmojiTextViewHelper; 36 37 public CustomTextView(Context context) { 38 this(context, null); 39 } 40 41 public CustomTextView(Context context, @Nullable AttributeSet attrs) { 42 this(context, attrs, 0); 43 } 44 45 public CustomTextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { 46 super(context, attrs, defStyleAttr); 47 getEmojiTextViewHelper().updateTransformationMethod(); 48 } 49 50 @Override 51 public void setFilters(InputFilter[] filters) { 52 super.setFilters(getEmojiTextViewHelper().getFilters(filters)); 53 } 54 55 @Override 56 public void setAllCaps(boolean allCaps) { 57 super.setAllCaps(allCaps); 58 getEmojiTextViewHelper().setAllCaps(allCaps); 59 } 60 61 /** 62 * Returns the {@link EmojiTextViewHelper} for this TextView. 63 * 64 * <p>This method can be called from super constructors through {@link 65 * #setFilters(InputFilter[])} or {@link #setAllCaps(boolean)}.</p> 66 */ 67 private EmojiTextViewHelper getEmojiTextViewHelper() { 68 if (mEmojiTextViewHelper == null) { 69 mEmojiTextViewHelper = new EmojiTextViewHelper(this); 70 } 71 return mEmojiTextViewHelper; 72 } 73 74 } 75
