Android中XmlSerializer生成xml文件

try {

  File f = new File(getExternalCacheDir().getAbsolutePath()+"my.xml");
OutputStream outPut = new FileOutputStream(f);

   XmlSerializer serializer=Xml.newSerializer(); 

   serializer.setOutput(outPut, "utf-8"); 

   serializer.startDocument("utf-8", true); 

   serializer.startTag(null, "companys"); 

   for(String[] s:taxiCompany) 

   { 

      serializer.startTag(null, DBUtil.TAXI_TABLE); 

      serializer.attribute(null, DBUtil.KEY_PROVINCE, s[0]); 

      serializer.attribute(null, DBUtil.KEY_CITYNAME, s[1]);

      serializer.attribute(null, DBUtil.KEY_NAME, s[2]); 

      serializer.attribute(null, DBUtil.KEY_TELE, s[3]); 

      serializer.endTag(null, DBUtil.TAXI_TABLE); 

   } 

   serializer.endTag(null, "companys"); 

   serializer.endDocument(); 

   outPut.close();

  } catch (IOException e) {

   // TODO Auto-generated catch block

   e.printStackTrace();

  }

private static void XmlFileCreator(List<JokeBean> data){
        File newxmlfile = new File(Environment.getExternalStorageDirectory()+"/new.xml");
        try{
            if(!newxmlfile.exists())
                newxmlfile.createNewFile();
        }catch(IOException e){
            Log.e("IOException", "exception in createNewFile() method");
        }
        //we have to bind the new file with a FileOutputStream
        FileOutputStream fileos = null;       
        try{
            fileos = new FileOutputStream(newxmlfile);
        }catch(FileNotFoundException e){
            Log.e("FileNotFoundException", "can't create FileOutputStream");
        }
        //we create a XmlSerializer in order to write xml data
        XmlSerializer serializer = Xml.newSerializer();
        try {
            //we set the FileOutputStream as output for the serializer, using UTF-8 encoding
            serializer.setOutput(fileos, "UTF-8");
            //Write <?xml declaration with encoding (if encoding not null) and standalone flag (if standalone not null)
            serializer.startDocument(null, Boolean.valueOf(true));
            //set indentation option
            serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true);
          //start a tag called "root"
            serializer.startTag(null, "jokes");
            for(JokeBean joke:data){
                serializer.startTag(null, "joke");
                //i indent code just to have a view similar to xml-tree
                serializer.startTag(null, "id");
                serializer.text(joke.getId());
                serializer.endTag(null, "id");
                                  
                serializer.startTag(null, "title");
                serializer.text(joke.getTitle());
                //set an attribute called "attribute" with a "value" for <child2>
                //serializer.attribute(null, "attribute", "value");
                serializer.endTag(null, "title");
                serializer.startTag(null, "text");
                //write some text inside <text>
                serializer.text(joke.getText());
                serializer.endTag(null, "text");
                                  
                serializer.endTag(null, "joke");
            }
            serializer.endTag(null, "jokes");
            serializer.endDocument();
            //write xml data into the FileOutputStream
            serializer.flush();
            //finally we close the file stream
            fileos.close();
        } catch (Exception e) {
            Log.e("Exception","error occurred while creating xml file");
        }
    }

 DateFormat df = DateFormat.getDateInstance(); 
 for (int i = 0; i < a.length; ++i) { 
     output.println(df.format(myDate[i]) + "; "); 
 } 
 

 DateFormat df = DateFormat.getDateInstance(DateFormat.LONG, Locale.FRANCE); 
 

public static CharSequence formatTimeInListForOverSeaUser(
final Context context, final long time, final boolean simple,
Locale locale) {
final GregorianCalendar now = new GregorianCalendar();
// special time
if (time < MILLSECONDS_OF_HOUR) {
return "";
}
// today
final GregorianCalendar today = new GregorianCalendar(
now.get(GregorianCalendar.YEAR),
now.get(GregorianCalendar.MONTH),
now.get(GregorianCalendar.DAY_OF_MONTH));
final long in24h = time - today.getTimeInMillis();
if (in24h > 0 && in24h <= MILLSECONDS_OF_DAY) {
java.text.DateFormat df = java.text.DateFormat.getTimeInstance(
java.text.DateFormat.SHORT, locale);
return "" + df.format(time);
}
// yesterday
final long in48h = time - today.getTimeInMillis() + MILLSECONDS_OF_DAY;
if (in48h > 0 && in48h <= MILLSECONDS_OF_DAY) {
return simple ? context.getString(R.string.fmt_pre_yesterday)
: context.getString(R.string.fmt_pre_yesterday)
+ " "
+ java.text.DateFormat.getTimeInstance(
java.text.DateFormat.SHORT, locale).format(
time);
}
final GregorianCalendar target = new GregorianCalendar();
target.setTimeInMillis(time);
// same week
if (now.get(GregorianCalendar.YEAR) == target
.get(GregorianCalendar.YEAR)
&& now.get(GregorianCalendar.WEEK_OF_YEAR) == target
.get(GregorianCalendar.WEEK_OF_YEAR)) {
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("E", locale);
final String dow = "" + sdf.format(time);
return simple ? dow : dow
+ java.text.DateFormat.getTimeInstance(
java.text.DateFormat.SHORT, locale).format(time);
}
// same year
if (now.get(GregorianCalendar.YEAR) == target
.get(GregorianCalendar.YEAR)) {
return simple ? java.text.DateFormat.getDateInstance(
java.text.DateFormat.SHORT, locale).format(time)
: java.text.DateFormat.getDateTimeInstance(
java.text.DateFormat.SHORT,
java.text.DateFormat.SHORT, locale).format(time);
}
return simple ? java.text.DateFormat.getDateInstance(
java.text.DateFormat.SHORT, locale).format(time)
: java.text.DateFormat.getDateTimeInstance(
java.text.DateFormat.SHORT, java.text.DateFormat.SHORT,
locale).format(time);
}

SharedPreferences settings = getSharedPreferences(“setting”, 0);

SharedPreferences.Editor editor = settings.edit();

editor.putString(“name”,”ATAAW”);
editor.putString(“URL”,”ATAAW.COM”);

editor.commit();

SharedPreferences settings = getSharedPreferences(“setting”, 0);

String name = settings.getString(“name”,”默认值”);
String url = setting.getString(“URL”,”default”);

DDMS->File Explorer /<package name>/shared_prefs/setting.xml

public class MainActivity extends Activity {
     @Override
     public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        //获取SharedPreferences对象
        Context ctx = MainActivity.this;      
        SharedPreferences sp = ctx.getSharedPreferences("SP", MODE_PRIVATE);
        //存入数据
        Editor editor = sp.edit();
        editor.putString("STRING_KEY", "string");
        editor.putInt("INT_KEY", 0);
        editor.putBoolean("BOOLEAN_KEY", true);
        editor.commit();
       
        //返回STRING_KEY的值
        Log.d("SP", sp.getString("STRING_KEY", "none"));
        //如果NOT_EXIST不存在，则返回值为"none"
        Log.d("SP", sp.getString("NOT_EXIST", "none"));
     }
 }

<?xml version='1.0' encoding='utf-8' standalone='yes' ?>2 <map>3 <string name="STRING_KEY">string</string>4 <int name="INT_KEY" value="0" />5 <boolean name="BOOLEAN_KEY" value="true" />6 </map>

    package com.jinyan.image; 
   
    import java.io.IOException; 
    import java.io.InputStream; 
    import java.net.HttpURLConnection; 
    import java.net.MalformedURLException; 
   import java.net.URL; 
    
   import android.app.Activity; 
   import android.graphics.Bitmap; 
   import android.graphics.BitmapFactory; 
   import android.os.Bundle; 
   import android.util.Log; 
  import android.view.View; 
   import android.view.View.OnClickListener; 
   import android.widget.Button; 
   import android.widget.ImageView; 
   
  public class ActivityMain extends Activity { 
  /** Called when the activity is first created. */ 
   
  String imageUrl = "http://i.pbase.com/o6/92/229792/1/80199697.uAs58yHk.50pxCross_of_the_Knights_Templar_svg.png"; 
  Bitmap bmImg; 
  ImageView imView; 
   
  Button button1; 
   
   @Override 
   public void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
   setContentView(R.layout.main); 
   imView = (ImageView) findViewById(R.id.imview); 
imView.setImageBitmap(returnBitMap(imageUrl)); 

} 
 
public Bitmap returnBitMap(String url) { 
URL myFileUrl = null; 
Bitmap bitmap = null; 
try { 
myFileUrl = new URL(url); 
} catch (MalformedURLException e) { 
e.printStackTrace(); 
} 
try { 
HttpURLConnection conn = (HttpURLConnection) myFileUrl 
  .openConnection(); 
conn.setDoInput(true); 
conn.connect(); 
InputStream is = conn.getInputStream(); 
bitmap = BitmapFactory.decodeStream(is); 
is.close(); 
} catch (IOException e) { 
  e.printStackTrace(); 
  } 
  return bitmap; 
} 
 
} 

   xml version="1.0" encoding="utf-8"?> 
   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
   android:orientation="vertical" android:layout_width="fill_parent" 
  android:layout_height="fill_parent"> 
   <ImageView android:id="@+id/imview" android:layout_width="wrap_content" 
   android:layout_height="wrap_content" android:layout_gravity="center" /> 
    LinearLayout> 

    <uses-permission android:name="android.permission.INTERNET" /> 

final Intent intent = new Intent("com.android.camera.action.CROP");
intent.setClassName("com.android.camera", "com.android.camera.CropImage");
intent.setData(Uri.fromFile(mFile));
intent.putExtra("outputX", width);
intent.putExtra("outputY", height);
intent.putExtra("aspectX", width);
intent.putExtra("aspectY", height);
intent.putExtra("scale", true);
intent.putExtra("noFaceDetection", true);
intent.putExtra("output", Uri.parse("file:/" + mFile.getAbsolutePath()));
startActivityForResult(intent, REQUEST_CROP_IMAGE);