Android example source code file (EditText.java)

This example Android source code file (EditText.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, attributeset, buffertype, content, editable, edittext, illegalargumentexception, movementmethod, override, text, textview, util, utilities, utils

The EditText.java Android example source code

/*
 * Copyright (C) 2006 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 android.widget;

import android.content.Context;
import android.text.Editable;
import android.text.Selection;
import android.text.Spannable;
import android.text.TextUtils;
import android.text.method.ArrowKeyMovementMethod;
import android.text.method.MovementMethod;
import android.util.AttributeSet;


/*
 * This is supposed to be a *very* thin veneer over TextView.
 * Do not make any changes here that do anything that a TextView
 * with a key listener and a movement method wouldn't do!
 */

/**
 * EditText is a thin veneer over TextView that configures itself
 * to be editable.
 * <p>
 * <b>XML attributes
 * <p>
 * See {@link android.R.styleable#EditText EditText Attributes},
 * {@link android.R.styleable#TextView TextView Attributes},
 * {@link android.R.styleable#View View Attributes}
 */
public class EditText extends TextView {
    public EditText(Context context) {
        this(context, null);
    }

    public EditText(Context context, AttributeSet attrs) {
        this(context, attrs, com.android.internal.R.attr.editTextStyle);
    }

    public EditText(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected boolean getDefaultEditable() {
        return true;
    }

    @Override
    protected MovementMethod getDefaultMovementMethod() {
        return ArrowKeyMovementMethod.getInstance();
    }

    @Override
    public Editable getText() {
        return (Editable) super.getText();
    }

    @Override
    public void setText(CharSequence text, BufferType type) {
        super.setText(text, BufferType.EDITABLE);
    }

    /**
     * Convenience for {@link Selection#setSelection(Spannable, int, int)}.
     */
    public void setSelection(int start, int stop) {
        Selection.setSelection(getText(), start, stop);
    }

    /**
     * Convenience for {@link Selection#setSelection(Spannable, int)}.
     */
    public void setSelection(int index) {
        Selection.setSelection(getText(), index);
    }

    /**
     * Convenience for {@link Selection#selectAll}.
     */
    public void selectAll() {
        Selection.selectAll(getText());
    }

    /**
     * Convenience for {@link Selection#extendSelection}.
     */
    public void extendSelection(int index) {
        Selection.extendSelection(getText(), index);
    }

    @Override
    public void setEllipsize(TextUtils.TruncateAt ellipsis) {
        if (ellipsis == TextUtils.TruncateAt.MARQUEE) {
            throw new IllegalArgumentException("EditText cannot use the ellipsize mode "
                    + "TextUtils.TruncateAt.MARQUEE");
        }
        super.setEllipsize(ellipsis);
    }
}