Xmlpull解析

最新推荐文章于 2025-05-12 12:40:07 发布

孜燃

最新推荐文章于 2025-05-12 12:40:07 发布

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CC 4.0 BY-SA版权

文章标签： android 手机

本文链接：https://blog.youkuaiyun.com/qq_15059163/article/details/78312490

本文介绍了一个使用Java实现的XML解析示例，通过Android平台的XmlPullParser解析本地XML文件中的学生信息，并将数据存储到自定义的实体类中。示例包括主函数、实体类及主布局文件。

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1.主函数

public class MainActivity extends AppCompatActivity {
    private stu st;
    private List<stu> arr;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        try {
            XmlPullParserFactory xml=XmlPullParserFactory.newInstance();
            XmlPullParser pull = xml.newPullParser();
            pull.setInput(getResources().getAssets().open("xml"),"UTF-8");
            arr=new ArrayList<>();
            int eventType = pull.getEventType();
            while (eventType!=pull.END_DOCUMENT){
                switch (eventType){
                    case XmlPullParser.START_TAG:
                        switch (pull.getName()){
                            case "student":
                                st = new stu();
                                break;
                            case "no":
                                st.setNo(pull.nextText());
                                break;
                            case "name":
                                st.setName(pull.nextText());
                                break;
                        }
                        break;
                    case XmlPullParser.END_TAG:
                        if(pull.getName().equals("student")){
                           arr.add(st);
                        }
                        break;
                }
                eventType=pull.next();
            }

            for (int i = 0; i <arr.size() ; i++) {
                Log.d("aa",arr.get(i).toString());
            }

        } catch (XmlPullParserException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

2.实体类

public class stu {
    private String no;
    private String name;

    public stu(String no, String name) {
        this.no = no;
        this.name = name;
    }

    @Override
    public String toString() {
        return "stu{" +
                "no='" + no + '\'' +
                ", name='" + name + '\'' +
                '}';
    }

    public stu() {
    }

    public String getNo() {
        return no;
    }

    public void setNo(String no) {
        this.no = no;
    }

    public String getName() {
        return name;
    }

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

3.主布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.myapplication.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!" />
</RelativeLayout>