在android中的同步

Question

我是android開發中的新手。我必須將我們的本地數據庫與SQL Server同步。

可以通過SQLite完成同步，或者我們需要使用任何其他類似的CouchDB。

如果我使用沙發DB，那麼CouchDB與SQLServer同步。

請提供SYNC的任何教程。

在此先感謝。

Answer 1

檢查解決方案由提供。這是一個演示Android應用程序的源代碼，它實現了MySQL服務器和Android設備上的SQLite數據庫之間的MySQL複製。

Answer 2

這裏我給出了Android應用程序中使用php的MySql（ex）微調器的本地數據庫連接。

我希望它對你有幫助。

請參閱本守則...

MainActivity.java

public class MainActivity extends Activity { 


InputStream is=null; 
String result=null; 
String line=null; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.activity_main); 

try 
{ 
HttpClient httpclient = new DefaultHttpClient(); 
HttpPost httppost = new HttpPost("http://10.0.2.2/spinner.php"); 
HttpResponse response = httpclient.execute(httppost); 
HttpEntity entity = response.getEntity(); 
is = entity.getContent(); 
Log.e("Pass 1", "connection success "); 
} 
catch(Exception e) 
{ 
Log.e("Fail 1", e.toString()); 
Toast.makeText(getApplicationContext(), "Invalid IP Address",Toast.LENGTH_LONG).show(); 
}  

try 
{ 
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8); 
StringBuilder sb = new StringBuilder(); 
while ((line = reader.readLine()) != null) 
{ 
sb.append(line + "\n"); 
} 
is.close(); 
result = sb.toString(); 
Log.e("Pass 2", "connection success "); 
} 
catch(Exception e) 
{ 
Log.e("Fail 2", e.toString()); 
}  

try 
{ 
JSONArray JA=new JSONArray(result); 
JSONObject json= null; 
final String[] str1 = new String[JA.length()];  
final String[] str2 = new String[JA.length()]; 
for(int i=0;i<JA.length();i++) 
{ 
json=JA.getJSONObject(i); 
str1[i] = json.getString("roll_no"); 
str2[i]=json.getString("name"); 
} 


final Spinner sp = (Spinner) findViewById(R.id.spinner1); 
List<String> list = new ArrayList<String>(); 

for(int i=0;i<str2.length;i++) 
{ 
list.add(str2[i]); 
} 

Collections.sort(list); 

ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(getApplicationContext(), 
       android.R.layout.simple_spinner_item, list); 
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
sp.setAdapter(dataAdapter); 

sp.setOnItemSelectedListener(new OnItemSelectedListener() 
{ 
@Override 
public void onItemSelected(AdapterView<?> arg0, View arg1,int position, long id) 
{ 
// TODO Auto-generated method stub 

String item=sp.getSelectedItem().toString(); 
Toast.makeText(getApplicationContext(), item,Toast.LENGTH_LONG).show(); 
Log.e("Item",item); 

} 

@Override 
public void onNothingSelected(AdapterView<?> arg0) 
{ 
// TODO Auto-generated method stub 
} 

}); 

} 
catch(Exception e) 
{ 
Log.e("Fail 3", e.toString()); 
} 
} 

spinner.php

<?php 
$host='127.0.0.1'; 
$uname='root'; 
$pwd='password'; 
$db='android'; 
$con = mysql_connect($host,$uname,$pwd) or die("connection failed"); 
mysql_select_db($db,$con) or die("db selection failed"); 
$r=mysql_query("select * from class",$con); 
while($row=mysql_fetch_array($r)) 
{ 
$cls[]=$row; 
} 
print(json_encode($cls)); 
mysql_close($con); 
?> 

添加以下代碼AndroidManifest.xml中

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