I'm having an error in passing the HTTP Client from JSON to Android.
Follow my code in JSON:
// constructor
public void JSONParser() {}
public JSONObject getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = (InputStream) httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}
It gives the following error in the line of HttpResponse = HttpClient.execute
06-18 12:18:54.761: E/AndroidRuntime(1090): FATAL EXCEPTION: main
06-18 12:18:54.761: E/AndroidRuntime(1090): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{br.com.example.souprogresso/br.com.example.souprogresso.retornaUsuario}: android.os.NetworkOnMainThreadException
06-18 12:18:54.761: E/AndroidRuntime(1090): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1880)
06-18 12:18:54.761: E/AndroidRuntime(1090): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
06-18 12:18:54.761: E/AndroidRuntime(1090): at android.app.ActivityThread.access$600(ActivityThread.java:123)
06-18 12:18:54.761: E/AndroidRuntime(1090): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
06-18 12:18:54.761: E/AndroidRuntime(1090): at android.os.Handler.dispatchMessage(Handler.java:99)
06-18 12:18:54.761: E/AndroidRuntime(1090): at android.os.Looper.loop(Looper.java:137)
06-18 12:18:54.761: E/AndroidRuntime(1090): at android.app.ActivityThread.main(ActivityThread.java:4424)
06-18 12:18:54.761: E/AndroidRuntime(1090): at java.lang.reflect.Method.invokeNative(Native Method)
06-18 12:18:54.761: E/AndroidRuntime(1090): at java.lang.reflect.Method.invoke(Method.java:511)
06-18 12:18:54.761: E/AndroidRuntime(1090): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
06-18 12:18:54.761: E/AndroidRuntime(1090): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
06-18 12:18:54.761: E/AndroidRuntime(1090): at dalvik.system.NativeStart.main(Native Method)
06-18 12:18:54.761: E/AndroidRuntime(1090): Caused by: android.os.NetworkOnMainThreadException
06-18 12:18:54.761: E/AndroidRuntime(1090): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099)
06-18 12:18:54.761: E/AndroidRuntime(1090): at java.net.InetAddress.lookupHostByName(InetAddress.java:391)
06-18 12:18:54.761: E/AndroidRuntime(1090): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:242)
06-18 12:18:54.761: E/AndroidRuntime(1090): at java.net.InetAddress.getAllByName(InetAddress.java:220)
06-18 12:18:54.761: E/AndroidRuntime(1090): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)
06-18 12:18:54.761: E/AndroidRuntime(1090): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
06-18 12:18:54.761: E/AndroidRuntime(1090): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
06-18 12:18:54.761: E/AndroidRuntime(1090): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
06-18 12:18:54.761: E/AndroidRuntime(1090): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
06-18 12:18:54.761: E/AndroidRuntime(1090): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
06-18 12:18:54.761: E/AndroidRuntime(1090): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
06-18 12:18:54.761: E/AndroidRuntime(1090): at br.com.example.souprogresso.JsonParser.getJSONFromUrl(JsonParser.java:35)
06-18 12:18:54.761: E/AndroidRuntime(1090): at br.com.example.souprogresso.retornaUsuario.<init>(retornaUsuario.java:19)
06-18 12:18:54.761: E/AndroidRuntime(1090): at java.lang.Class.newInstanceImpl(Native Method)
06-18 12:18:54.761: E/AndroidRuntime(1090): at java.lang.Class.newInstance(Class.java:1319)
06-18 12:18:54.761: E/AndroidRuntime(1090): at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
06-18 12:18:54.761: E/AndroidRuntime(1090): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1871)
06-18 12:18:54.761: E/AndroidRuntime(1090): ... 11 more
06-18 12:18:55.381: I/dalvikvm(1090): threadid=3: reacting to signal 3
06-18 12:18:55.531: I/dalvikvm(1090): Wrote stack traces to '/data/anr/traces.txt'
06-18 12:18:56.041: I/dalvikvm(1090): threadid=3: reacting to signal 3
06-18 12:18:56.081: I/dalvikvm(1090): Wrote stack traces to '/data/anr/traces.txt'
06-18 12:23:55.732: I/Process(1090): Sending signal. PID: 1090 SIG: 9
My code where I bring the information
public class retornaUsuario {
private static String url = "http://www.xxxxxxx.com.br/SOUPROGRESSO/Ctrl/server2.php";
JsonParser jParser = new JsonParser();
JSONObject json = jParser.getJSONFromUrl(url);
// @SuppressWarnings("unchecked")
public static void main(String[] args) throws JSONException {
//Retorno
Usuario usuario = new Usuario();
//Retorno dos dados que precisamos
JSONObject json = new JSONObject(url);
String nome = json.getString("nome");
String cpf = json.getString("cpf");
usuario.setNome(nome);
usuario.setCpf(cpf);
System.out.println(usuario);
}
}