我是Android新手，目前正在尝试通过PHP将Android连接到数据库。我可以轻松地将PHP脚本连接到我的数据库，但我无法让Android与PHP脚本通信。我尝试过多个例子 - http://www.androidaspect.com/2013/05/how-to-connect-android-with-php.html - 但似乎无法让它发挥作用。如果我能让Android从PHP脚本中收到一条说“你好”的消息，我很容易就能完成我的工作，但我不能。我被告知要做一些事情，比如使用ASync，但坦率地说，这让事情变得更加复杂。在让我的Android方面与我的PHP方面交谈时，任何帮助都会受到赞赏。非常感谢你提前。
我已经删除了我尝试过的实际代码，但上面链接了一个教程，另一个让我试试这个 -
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("rec","mar"));
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://10.0.2.2/select.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
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();
JSONObject json_data = new JSONObject(result);
name=(json_data.getString("name"));
Toast.makeText(getBaseContext(), "Name : "+name,
Toast.LENGTH_SHORT).show();
答案 0 :(得分：2)
使用以下类作为内部类并更改网址和参数：
class PlaceOrder extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... params) {
// TODO Auto-generated method stub
try {
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPst = new HttpPost(
"yout_url");
ArrayList<NameValuePair> parameters = new ArrayList<NameValuePair>(
2);
parameters.add(new BasicNameValuePair("username", "apple"));
parameters.add(new BasicNameValuePair("pw", "apple"));
parameters.add(new BasicNameValuePair("email",
"apple@gmail.com"));
parameters.add(new BasicNameValuePair("name", "apple"));
httpPst.setEntity(new UrlEncodedFormEntity(parameters));
HttpResponse httpRes = httpClient.execute(httpPst);
String str = convertStreamToString(
httpRes.getEntity().getContent()).toString();
Log.i("mlog", "outfromurl" + str);
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
public static String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}
使用http://json.parser.online.fr/验证json
答案 1 :(得分：0)
我可以建议你使用RETROFIT：
http://square.github.io/retrofit/
简单介绍一下。
针对Android进行了优化，以便在MainThread上执行Response Callbacks，以便您可以操作UI控件。
示例：
public interface TimetrackingService {
@GET("/projekte")
void getProjects(Callback<List<Project>> cb);
@POST("/timetrack")
void submit(
@Query("projektId") int projektId,
@Query("start") String start,
@Query("ende") String ende,
Callback<Void> cb);
}
public class Project {
public int id;
public String name;
}
RestAdapter restAdapter = new RestAdapter.Builder()
.setEndpoint(url)
.build();
TimetrackingService service = restAdapter.create(TimetrackingService.class);
service.getProjects(new Callback<List<Project>>() {
@Override
public void success(List<Project> list, Response response) {
Log.d(LOG, "success");
}
@Override
public void failure(RetrofitError e) {
Log.d(LOG, "failure");
}
});