public class

EmojiButton

extends Button

 java.lang.Object

↳Button

↳androidx.emoji.widget.EmojiButton

Gradle dependencies

compile group: 'androidx.emoji', name: 'emoji', version: '1.2.0-alpha03'

  • groupId: androidx.emoji
  • artifactId: emoji
  • version: 1.2.0-alpha03

Artifact androidx.emoji:emoji:1.2.0-alpha03 it located at Google repository (https://maven.google.com/)

Androidx artifact mapping:

androidx.emoji:emoji com.android.support:support-emoji

Androidx class mapping:

androidx.emoji.widget.EmojiButton android.support.text.emoji.widget.EmojiButton

Overview

Button widget enhanced with emoji capability by using EmojiTextViewHelper. When used on devices running API 18 or below, this widget acts as a regular .

Summary

Constructors
publicEmojiButton(Context context)

publicEmojiButton(Context context, AttributeSet attrs)

publicEmojiButton(Context context, AttributeSet attrs, int defStyleAttr)

publicEmojiButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)

Methods
public voidsetAllCaps(boolean allCaps)

public voidsetCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback)

See TextViewCompat.setCustomSelectionActionModeCallback(TextView, ActionMode.Callback)

public voidsetFilters(InputFilter filters[])

from java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructors

public EmojiButton(Context context)

public EmojiButton(Context context, AttributeSet attrs)

public EmojiButton(Context context, AttributeSet attrs, int defStyleAttr)

public EmojiButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)

Methods

public void setFilters(InputFilter filters[])

public void setAllCaps(boolean allCaps)

public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback)

See TextViewCompat.setCustomSelectionActionModeCallback(TextView, ActionMode.Callback)

Source

/*
 * 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 androidx.emoji.widget;

import android.content.Context;
import android.os.Build;
import android.text.InputFilter;
import android.util.AttributeSet;
import android.view.ActionMode;
import android.widget.Button;

import androidx.annotation.RequiresApi;
import androidx.core.widget.TextViewCompat;

/**
 * Button widget enhanced with emoji capability by using {@link EmojiTextViewHelper}. When used
 * on devices running API 18 or below, this widget acts as a regular {@link Button}.
 */
public class EmojiButton extends Button {
    private EmojiTextViewHelper mEmojiTextViewHelper;

    /**
     * Prevent calling {@link #init()} multiple times in case super() constructors
     * call other constructors.
     */
    private boolean mInitialized;

    public EmojiButton(Context context) {
        super(context);
        init();
    }

    public EmojiButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public EmojiButton(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
    public EmojiButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        init();
    }

    private void init() {
        if (!mInitialized) {
            mInitialized = true;
            getEmojiTextViewHelper().updateTransformationMethod();
        }
    }

    @Override
    public void setFilters(InputFilter[] filters) {
        super.setFilters(getEmojiTextViewHelper().getFilters(filters));
    }

    @Override
    public void setAllCaps(boolean allCaps) {
        super.setAllCaps(allCaps);
        getEmojiTextViewHelper().setAllCaps(allCaps);
    }

    private EmojiTextViewHelper getEmojiTextViewHelper() {
        if (mEmojiTextViewHelper == null) {
            mEmojiTextViewHelper = new EmojiTextViewHelper(this);
        }
        return mEmojiTextViewHelper;
    }

    /**
     * See
     * {@link TextViewCompat#setCustomSelectionActionModeCallback(TextView, ActionMode.Callback)}
     */
    @Override
    public void setCustomSelectionActionModeCallback(ActionMode.Callback actionModeCallback) {
        super.setCustomSelectionActionModeCallback(TextViewCompat
                .wrapCustomSelectionActionModeCallback(this, actionModeCallback));
    }
}