通过getSharedPreferences（“文件名”，权限）获取SharedPreferences；
SharedPreferences sp = getSharedPreferences(“info”,MODE_PRIVATE);序列化
- 保存值：（通过sp获取edit，通过edit中的方法进行保存值）
Editor editor= sp.edit();
editor.putString(“uName”,uName); //uName在这里是从后台获取的用户名数据
editor.putString(“uPass”,uPass); //upass是从后台获取的密码数据
editor.commit();
- 取值：
String u =sp.getString(“uName”,”“);
String p =sp.getString(“uPass”,”“);
以短信为例：
public class CMS {
private Stringform;
private String contentx;
private String time;
public String getForm() {
return form;
}
public void setForm(String form) {
this.form = form;
}
public String getContentx() {
return contentx;
}
public void setContentx(String contentx) {
this.contentx = contentx;
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
@Override
public String toString() {
return "CMS{" +
"form='" + form + '\'' +
", contentx='" + contentx + '\'' +
", time='" + time + '\'' +
'}';
}
}
使用普通方法保存数据到xml：
public void saveCMS(view v){
StringBuffersb= new StringBuffer();
sb.append("");
sb.append("");
for (int i=0;
i");
sb.append("");
sb.append("");
sb.append(cms.getContent());
sb.append(" ");
sb.append("");
sb.append("");
}
sb.append("");
String xml = sb.toString();
try{
FileOutputStreamfos =openFileOutput("cms.xml",MODE_PRIVATE);
fos.write(xml.getBytes());
fos.close();
}catch (Exception e){
e.printStackTrace();
}
} 【安卓学习之文件存储（笔记）】使用序列化进行保存数据
//xml序列化器
publicvoid saveCMSby(view v){
XmlSerializer serializer= Xml.newSerializer();
try{
serializer.setOutput(openFileOutput("cms.xml",MODE_PRIVATE),"utf-8");
serializer.startDocument("utf-8",true);
serializer.startTag(null,"scmlist");
for(CMS m:cmsList){
serializer.startTag(null,"cms");
serializer.startTag(null,"form");
serializer.text(m.getForm());
serializer.endTag(null,"form");
serializer.startTag(null,"content");
serializer.text(m.getContent());
serializer.endTag(null,"content");
serializer.startTag(null,"time");
serializer.text(m.getTime());
serializer.endTag(null,"time");
serializer.endTag(null,"cms");
}
serializer.endTag(null,"scmlist");
serializer.endDocument();
}catch (Exception e){
e.printStackTrace();
}
}解析xml文件 获取解析器：
publicvoidparXml(Viewview){
XmlPullParser pullParser=Xml.newPullParser();
List cmsList=null;
CMS cms=null;
try {
pullParser.setInput(openFileInput("cms.xml"),"utf-8");
inteventType=pullParser.getEventType();
while (eventType!=XmlPullParser.END_DOCUMENT){
switch (eventType){
case XmlPullParser.START_TAG:
if("cmslist".equals(pullParser.getName())) {
cmsList=new ArrayList<>();
}else if("cms".equals(pullParser.getName())){
cms=new CMS();
}else if("form".equals(pullParser.getName())){
cms.setForm(pullParser.nextText());
}else if("content".equals(pullParser.getName())){
cms.setContent(pullParser.nextText());
}else if("time".equals(pullParser.getName())){
cms.setTime(pullParser.nextText());
}
break;
case XmlPullParser.END_TAG:
if("cms".equals(pullParser.getName())){
cmsList.add(cms);
}
break;
}
eventType= pullParser.next();
}
}catch (Exception e){
e.printStackTrace();
}
} 
