Xml

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遍历出xml中的属性

例子1

set.xml

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<?xml version="1.0" encoding="utf-8"?>
<accent>
    <!--   配置数据    -->
    <ip>192.168.1.104</ip>
    <port>0001</port>
    <user>2096</user>
    <password>2096</password>
</accent>

设置一个Bean类保存信息

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public class MySetBean {
    private String ip;
    private String port;
    private String user;
    private String password;

    public MySetBean() {
    }

    public MySetBean(String ip, String port, String user, String password) {
        this.ip = ip;
        this.port = port;
        this.user = user;
        this.password = password;
    }
    
    //set/get
    //...

    @Override
    public String toString() {
        //...
    }

    @Override
    public boolean equals(Object o) {
        //...
    }

    @Override
    public int hashCode() {
        //...
    }
}

读取xml文件数据

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public class XMLUtil {
    public MySetBean ReadXML(Context context, String sXMLFile) {
        MySetBean setBean = new MySetBean();
        try {
            //1.获得DOM解析器的工厂示例:
            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
            //2.从Dom工厂中获得dom解析器
            DocumentBuilder builder = dbFactory.newDocumentBuilder();
            //3.使用文件的路径+文件名生成File对象
            File tempFile = new File(sXMLFile);
            //如果存在
            if (tempFile.exists()) {
//                Toast.makeText(context, "正在读取系统配置文件", Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(context, "系统配置文件不存在", Toast.LENGTH_SHORT).show();
                return null;
            }
            FileInputStream inputStream = new FileInputStream(tempFile);
            Document document = null;
            if (inputStream != null) {
                document = builder.parse(inputStream);
            }
            //4.得到文档中名称为accent的元素的结点,文件中只有一个所以不需要遍历
            NodeList nodeList = document.getElementsByTagName("accent").item(0).getChildNodes();
            for (int i = 0; i < nodeList.getLength(); i++) {
                if (nodeList.item(i).getNodeType() == Node.ELEMENT_NODE) {
                    //读取配置信息
                    if (nodeList.item(i).getNodeName().equals("ip")) {
                        setBean.setIp(nodeList.item(i).getFirstChild().getNodeValue().trim());
                    }
                    if (nodeList.item(i).getNodeName().equals("port")) {
                        setBean.setPort(nodeList.item(i).getFirstChild().getNodeValue().trim());
                    }
                    if (nodeList.item(i).getNodeName().equals("user")) {
                        setBean.setUser(nodeList.item(i).getFirstChild().getNodeValue().trim());
                    }
                    if (nodeList.item(i).getNodeName().equals("password")) {
                        setBean.setPwd(nodeList.item(i).getFirstChild().getNodeValue().trim());
                    }
                }
            }
            //关闭文件
            inputStream.close();
            tempFile = null;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return setBean;
    }
}

例子2

xmlfile.xml 

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<?xml version="1.0" encoding="utf-8"?>
<Languages cat="it">
    <lan id="1">
        <name>Java</name>
        <ide>Eclipse</ide>
        <type>面向对象</type>
    </lan>
    <lan id="2">
        <name>C</name>
        <ide>VS</ide>
        <type>面向过程</type>
    </lan>
    <lan id="3">
        <name>C#</name>
        <ide>vs</ide>
        <type>面向对象</type>
    </lan>
</Languages>

解析

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import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

public class MainActivity extends Activity {
    TextView text;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        text = (TextView) findViewById(R.id.text);

        try {
            DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder;
            builder = builderFactory.newDocumentBuilder();
            Document document = builder.parse(getAssets().open("xmlfile.xml"));
            Element element = document.getDocumentElement();
            NodeList nodeList = element.getElementsByTagName("lan");
            text.append("\n");
            for (int i = 0; i < nodeList.getLength(); i++) {
                Element lan = (Element) nodeList.item(i);
                text.append(lan.getAttribute("id") + "\n");
                text.append(lan.getElementsByTagName("name").item(0).getTextContent() + " ");
                text.append(lan.getElementsByTagName("ide").item(0).getTextContent() + " ");
                text.append(lan.getElementsByTagName("type").item(0).getTextContent() + " ");
                text.append("\n");
            }

        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

根据名称读取资源id

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import java.lang.reflect.Field;
import android.content.Context;

public class ResourceUtil {

    public static int getLayoutId(Context sContext, String paramString) {
        if (sContext == null) {
            return 0;
        }
        return sContext.getResources().getIdentifier(paramString, "layout", sContext.getPackageName());
    }

    public static int getStringId(Context sContext, String paramString) {
        if (sContext == null) {
            return 0;
        }
        return sContext.getResources().getIdentifier(paramString, "string", sContext.getPackageName());
    }

    public static String getStringsValue(Context sContext, String key) {
        int id = ResourceUtil.getStringId(sContext, key);
        if (id != 0) {
            return sContext.getResources().getString(id);
        }
        return "";
    }
    
    public static int getDrawableId(Context sContext, String paramString) {
        if (sContext == null) {
            return 0;
        }
        return sContext.getResources().getIdentifier(paramString, "drawable", sContext.getPackageName());
    }

    public static int getStyleId(Context sContext, String paramString) {
        if (sContext == null) {
            return 0;
        }
        return sContext.getResources().getIdentifier(paramString, "style", sContext.getPackageName());
    }

    public static int getId(Context sContext, String paramString) {
        if (sContext == null) {
            return 0;
        }
        return sContext.getResources().getIdentifier(paramString, "id", sContext.getPackageName());
    }

    public static int getColorId(Context sContext, String paramString) {
        if (sContext == null) {
            return 0;
        }
        return sContext.getResources().getIdentifier(paramString, "color", sContext.getPackageName());
    }

    public static int getDimenId(Context sContext, String paramString) {
        if (sContext == null) {
            return 0;
        }
        return sContext.getResources().getIdentifier(paramString, "dimen", sContext.getPackageName());
    }

    public static int getAnimId(Context sContext, String paramString) {
        if (sContext == null) {
            return 0;
        }
        return sContext.getResources().getIdentifier(paramString, "anim", sContext.getPackageName());
    }

    // 通过反射实现
    public static final int[] getStyleableIntArray(Context sContext, String name) {
        try {
            if (sContext == null) {
                return null;
            }
            Field field = Class.forName(sContext.getPackageName() + ".R$styleable").getDeclaredField(name);
            int[] ret = (int[]) field.get(null);
            return ret;
        } catch (Throwable t) {
        }
        return null;
    }

    public static final int getStyleableIntArrayIndex(Context sContext, String name) {
        try {
            if (sContext == null) {
                return 0;
            }
            // use reflection to access the resource class
            Field field = Class.forName(sContext.getPackageName() + ".R$styleable").getDeclaredField(name);
            int ret = (Integer) field.get(null);
            return ret;
        } catch (Throwable t) {
        }
        return 0;
    }
}

读取所有

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private Map<Integer, String> getStringsValue() {
        Map<Integer, String> map = new HashMap<>();
        Field[] fields = R.string.class.getDeclaredFields();
    	//Field[] fields = R.color.class.getDeclaredFields();
        for (int i = 0; i < fields.length; i++) {
            int id = getResources().getIdentifier(fields[i].getName(), "string", getPackageName());
            String value = getResources().getString(id);
            map.put(id, value);
        }
        System.out.println(map);
        return map;
    }