如何将一个子元素值放入 Android 中的 ArrayList 中？

Question

I have difficulties about the XmlPullParser event which is tagging all the elements but how can I store one child element into ArrayList?

this is my xml file:

<site>
    <name>Brake and Break</name>
    <link>https://sampleactivity.000webhostapp.com/lesson_1.mp3</link>
        <set>When teaching my daughter how to drive, I told her if she didn't hit the brake in time she would break the car's side mirror.</set>
        <set>You shouldn’t brake as often as you do. You are going to break your car’s brakes.</set>
        <set>I think this relationship is moving too fast for me. Maybe it's best to just hit the brake than to completely break up.</set>
    <image>https://sampleactivity.000webhostapp.com/stckOvflw.png</image>
</site>

In my xml file I have element name SET so how can a store all the set elements and attributes into an array list?

here is my xmlpullparser.java code:

switch (eventType) {
                case XmlPullParser.START_TAG:

                    if (tagname.equalsIgnoreCase(KEY_SITE)) {

                        curStackSite = new StackSite();
                    }
                    break;


                case XmlPullParser.TEXT:

                    curText = xpp.getText();
                    break;


                case XmlPullParser.END_TAG:
                    if (tagname.equalsIgnoreCase(KEY_SITE)) {

                        stackSites.add(curStackSite);
                    } else if (tagname.equalsIgnoreCase(KEY_NAME)) {

                        curStackSite.setName(curText);
                    } else if (tagname.equalsIgnoreCase(KEY_LINK)) {

                        curStackSite.setLink(curText);
                    } else if (tagname.equalsIgnoreCase(KEY_SET)) {
                        ArrayList<String> wew = new ArrayList<String>();
                        wew.add(curText);
                        curStackSite.setAlAbout(wew); <--- How can I store all element to arraylist here?
                        curStackSite.setSet(curText);
                    } else if (tagname.equalsIgnoreCase(KEY_IMAGE_URL)) {

                        curStackSite.setImgUrl(curText);
                    }
                    break;

                default:
                    break;
            }

i have tried to us dom parsing but still doesn't work much really in my code.

UPDATE:

this is my stacksite value:

public class StackSite {
private String name;
private String link;
private String about;
private List<String> AlAbout;
private String id;

public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}

public String getLink() {
    return link;
}
public void setLink(String link) {
    this.link = link;
}

public String getAbout() {
    return about;
}
public void setAbout(String about) {this.about = about;}

public List<String> getAlAbout() {
    return AlAbout;
}
public void setAlAbout(List<String> AlAbout) {this.AlAbout = AlAbout;}

@Override
public String toString() {
    return "StackSite [name=" + name + ", link=" + link + ", about="
            + about + ", Array sets=" + AlAbout + "]";
}
}

Answer 1

If the StackSite class had a member as such:

List<String> allSets;

and the constructor of StackSite initialized allSets to an empty list:

allSets = new ArrayList<>();

then in the END_TAG case where tagName.equalsIgnoreCase(KEY_SET) you'd simply add the set text:

curStackSite.allSets.add(curText);

would add a separate entry in the allSets list for each <set>…</set> encountered.

At the end of parsing the allSets list member of StackSite contains 0 or more entries for set contents.

As for attributes you'd probably want to create a new class for a StackSiteSet which contains the String set text and attributes fields rather than treating sets as just the String.

So your END_TAG processing for </set> should look like:

} else if (tagname.equalsIgnoreCase(KEY_SET)) {
    // Get the list and add another element to it.
    curStackSite.getAlAbout().add(curText);
}