|
写xml文件：在写文件时要判断文件是否存在不存在可以创建
xmlfile.mkdir();//创建文件夹
xmlfile.createNewFile();//创建文件
private XmlSerializer serializer;
private void writeXML() {
// 取到更改后的值
List<HashMap<String,String>> relist = new ArrayList<HashMap<String,String>>();
//在adapter中取到更改以后的值
relist = adapter.getData();
//测试是否能取到正确的值
for (int i = 0; i < relist.size(); i++) {
String reid = relist.get(i).get("id").toString();
System.out.println("---activity reid ---"+reid);
String revalue = relist.get(i).get("value").toString();
System.out.println("---activity revalue ---"+revalue);
}
try {
//向data/data/包名/files下的appserver.xml文件写
//OutputStream out = this.openFileOutput("appserver.xml",// Context.MODE_PRIVATE);
//OutputStreamWriter outw = new OutputStreamWriter(out);
String xmlPath = File.separator + "sdcard" + File.separator+"appserver.xml";
File xmlFile = new File(xmlPath);
FileOutputStream fileos = new FileOutputStream(xmlFile);
serializer = Xml.newSerializer();
//serializer.setOutput(outw);
serializer.setOutput(fileos,"UTF-8");//设置输出的writer对象
serializer.startDocument("UTF-8",true); //写入xml标识语句
serializer.startTag(null,"resources");// 开始根元素标签<resources>
for (int i = 0; i < relist.size(); i++) {
serializer.startTag(null,"app");//写入xml开始元素标识
serializer.attribute(null,"id",relist.get(i).get("id"));
serializer.attribute(null,"value",relist.get(i).get("value"));//写属性
serializer.text("aaa");//写入元素的值
serializer.endTag(null,"app");
}
// 结束标签</resources>
serializer.endTag(null,"resources");
// 结束文档标记
serializer.endDocument();
// System.out.println("----save file----");
serializer.flush(); // 将serializer中数据写入文件
fileos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
读xml文件：1、读取res下的xml的文件。用XmlPullParser
XmlPullParser xrp =null;
InputStream slideInputStream = null;
AppServerVO appSerer = AppServerVO.getInstance();
String xmlPath = File.separator + "sdcard" + File.separator +"appserver.xml";
File xmlFile = new File(xmlPath);
if(xmlFile.exists()){
System.out.println("--文件存在---");
try {
slideInputStream = new FileInputStream(xmlPath);
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
xrp = factory.newPullParser();
xrp.setInput(slideInputStream,"UTF-8");
while (xrp.getEventType() != XmlResourceParser.END_DOCUMENT) {
if (xrp.getEventType() == XmlResourceParser.START_TAG) {
String s = xrp.getName();
if (s.equals("app")) {
String id = xrp.getAttributeValue(null,"id");
String value = xrp.getAttributeValue(null,"value");
if ("name".equals(id)) {
appSerer.setName(value);
} else if ("sdkType".equals(id)) {
appSerer.setSdkType(value);
}
}
}
xrp.next();
}
return appSerer;
} catch (Exception e) {
e.printStackTrace();
} finally {
//关闭输入流
if (slideInputStream != null) {
try {
slideInputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
slideInputStream = null;
}
}
}else{
System.out.println("--文件不存在---");
}
return null;2、读取指定目录下的xml文件用XMLResourceParser
Resources res = getResources();
XmlResourceParser xrp = res.getXml(R.xml.appserver);
while (xrp.getEventType() != XmlResourceParser.END_DOCUMENT) {
if (xrp.getEventType() == XmlResourceParser.START_TAG) {
String s = xrp.getName();
if (s.equals("app")) {
String id = xrp.getAttributeValue(null,"id");
String value = xrp.getAttributeValue(null,"value");
if ("name".equals(id)) {
appSerer.setName(value);
} else if ("sdkType".equals(id)) {
appSerer.setSdkType(value);
}
}
}
xrp.next();
}
return appSerer;
} catch (Exception e) {
} finally {
xrp.close();
}
return null;
（编辑：李大同）
【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!
|
