[EmailAutoCompleteTextView] EmailAutoCompleteTextView #android #customView #email

EmailAutoCompleteTextView.java

package com.example.customView;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.AutoCompleteTextView;

/**
 * Created by julien quievreux on 06/08/2014.
 */
public class EmailAutoCompleteTextView extends AutoCompleteTextView {

    /**
     * VARIABLES *
     */
    public final static String TAG = "EmailAutoCompleteView";
    private boolean mShowClear = false;

    /**
     * OBJECTS *
     */
    private Drawable imgCloseButton = getResources().getDrawable(R.drawable.closebtn);

    public EmailAutoCompleteTextView(Context context) {
        super(context);
        initializeClearButton(context, null);
    }

    public EmailAutoCompleteTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        initializeClearButton(context, attrs);
    }

    /**
     * Constructor
     *
     * @param attrs use xml attribute with xmlns:edittextwithcross="http://schemas.android.com/apk/res-auto"
     */
    public EmailAutoCompleteTextView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        initializeClearButton(context, attrs);
    }

    private void initializeClearButton(Context context, AttributeSet attrs) {
        if (!isInEditMode()) {
            if (context != null) {
                setThreshold(1);
                setAdapter(Utils.getEmailAddressAdapter(context));
            }

            if (attrs != null) {
                TypedArray typedArray = context
                        .obtainStyledAttributes(attrs, R.styleable.EditTextWithCross);
                mShowClear = typedArray.getBoolean(R.styleable.EditTextWithCross_showClearIcon, false);
                int resIcon = typedArray.getInteger(R.styleable.EditTextWithCross_crossIconRes, -1);
                if (resIcon != -1)
                    imgCloseButton = getResources().getDrawable(resIcon);
            }

            if (mShowClear) {
                // Set bounds of the Clear button so it will look ok
                imgCloseButton.setBounds(0, 0, imgCloseButton.getIntrinsicWidth(),
                        imgCloseButton.getIntrinsicHeight());
                // There may be initial text in the field, so we may need to display the button
                handleClearButton();

                // if the Close image is displayed and the user remove his finger from the button, clear
                // it. Otherwise do nothing
                setOnTouchListener(new OnTouchListener() {
                    @Override
                    public boolean onTouch(View v, MotionEvent event) {
                        if (getCompoundDrawables()[2] == null) {
                            return false;
                        }
                        if (event.getAction() != MotionEvent.ACTION_UP) {
                            return false;
                        }
                        if (event.getX() > getWidth() - getPaddingRight() - imgCloseButton.getIntrinsicWidth()) {
                            setText("");
                            handleClearButton();
                        }
                        return false;
                    }
                });

                // if text changes, take care of the button
                addTextChangedListener(new TextWatcher() {
                    @Override
                    public void onTextChanged(CharSequence s, int start, int before, int count) {
                        handleClearButton();
                    }

                    @Override
                    public void afterTextChanged(Editable arg0) {
                    }

                    @Override
                    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                    }
                });
            }
        }
    }

    public boolean ismShowClear() {
        return mShowClear;
    }

    public void setmShowClear(boolean mShowClear) {
        this.mShowClear = mShowClear;
    }

    private void handleClearButton() {
        if (this.getText().toString().equals("")) {
            // remove clear button
            setCompoundDrawables(this.getCompoundDrawables()[0], getCompoundDrawables()[1], null, getCompoundDrawables()[3]);
        } else {
            // add the clear button
            setCompoundDrawables(getCompoundDrawables()[0], getCompoundDrawables()[1], imgCloseButton, getCompoundDrawables()[3]);
        }
    }
}

Utils.java

    /**
     * require (API level 5+) and :
     * <uses-permission android:name="android.permission.GET_ACCOUNTS" />
     *
     * @param context
     * @return an ArrayAdapter<String> which contain Email account
     */
    public static ArrayAdapter<String> getEmailAddressAdapter(Context context) {

        Pattern emailPattern = Patterns.EMAIL_ADDRESS; // API level 8+
        Account[] accounts = AccountManager.get(context).getAccounts();
        HashSet<String> emailSet = new HashSet<>();

        for (Account account : accounts) {
            if (emailPattern.matcher(account.name).matches()) {
                emailSet.add(account.name);
            }
        }

        String[] emailArray = emailSet.toArray(new String[emailSet.size()]);
        return new ArrayAdapter<>(context, android.R.layout.simple_dropdown_item_1line, emailArray);
    }