Merge "Fix handling of ListPreference.setValue()"

package android.preference;

import android.app.AlertDialog.Builder;

import android.content.Context;

import android.content.DialogInterface;

import android.content.res.TypedArray;

import android.os.Parcel;

import android.os.Parcelable;

import android.text.TextUtils;

import android.util.AttributeSet;

/**

    private String mValue;

    private String mSummary;

    private int mClickedDialogEntryIndex;

    private boolean mValueSet;

    public ListPreference(Context context, AttributeSet attrs) {

        super(context, attrs);

     * @param value The value to set for the key.

     */

    public void setValue(String value) {

        // Always persist/notify the first time.

        final boolean changed = !TextUtils.equals(mValue, value);

        if (changed || !mValueSet) {

            mValue = value;

            mValueSet = true;

            persistString(value);

            if (changed) {

                notifyChanged();

            }

        }

    }

    /**