生成一个XML文件：XML的序列化器

生成一个XML文件：XML的序列化器

public class MainActivity extends Activity implements OnClickListener {

private Button bt_create ;

private List<SmsBean> smsList ;

SmsBean sms ;

@Override

protected void onCreate(Bundle savedInstanceState) {

super .onCreate(savedInstanceState);

setContentView(R.layout. activity_main );

bt_create =(Button) findViewById(R.id. bt_create );

bt_create .setOnClickListener( this );

//模拟短信生成

Random random= new Random();

smsList = new ArrayList<SmsBean>();

for ( int i=0;i<10;i++){

sms = new SmsBean(String.valueOf(random.nextInt(9999)), "短信内容" +i,System.currentTimeMillis());

smsList .add( sms );

}

}

/**

* 生成一个xml文件

*/

@Override

public void onClick(View v) {

try {

//创建xml序列化器

XmlSerializer serializer = Xml.newSerializer();

//初始化序列化器参数

File file= new File(Environment.getExternalStorageDirectory(), "/sms.xml" );

FileOutputStream fos= new FileOutputStream(file);

serializer.setOutput(fos, "UTF-8" );

//开始写xml文件

serializer.startDocument( "UTF-8" , true ); //xml文件头配置

serializer.startTag( null , "Sms" ); //1.命名空间 2.节点名称

for (SmsBean sms : smsList ) {

serializer.startTag( null , "sms" );

serializer.attribute( null , "id" , "1" ); //添加节点属性

serializer.startTag( null , "address" );

serializer.text(sms.getAddress());

serializer.endTag( null , "address" );

serializer.startTag( null , "content" );

serializer.text(sms.getContent());

serializer.endTag( null , "content" );

serializer.startTag( null , "tate" );

serializer.text(String.valueOf(sms.getDate()));

serializer.endTag( null , "tate" );

serializer.endTag( null , "sms" );

}

serializer.endTag( null , "Sms" );

serializer.endDocument();

//关闭流资源

fos.close();

Toast.makeText(getApplicationContext(), "生成xml文件成功" ,0).show();

} catch (Exception e) {

e.printStackTrace();

Toast.makeText(getApplicationContext(), "生成xml文件失败" ,0).show();

}

}

}