Título: Login en android Publicado por: kira23ele en 16 Enero 2014, 10:35 am Alguien podria indicarme como hacer un login en android que se conecte a una base de datos mediante json? voy MUY perdido llevo 1 mes intentando de todo pero no hay manera. Estaria muy agradecido... :(
Saludos! Título: Re: Login en android Publicado por: engel lex en 16 Enero 2014, 10:51 am en que lenguaje estás trabajando? que llevas de codigo? donde te pierdes?
Título: Re: Login en android Publicado por: kira23ele en 16 Enero 2014, 12:07 pm esta es la clase main:
public class MainActivity extends Activity { EditText un,pw; TextView error; Button ok; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); un=(EditText)findViewById(R.id.et_un); pw=(EditText)findViewById(R.id.et_pw); ok=(Button)findViewById(R.id.btn_login); error=(TextView)findViewById(R.id.tv_error); ok.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>(); postParameters.add(new BasicNameValuePair("email", un.getText().toString())); postParameters.add(new BasicNameValuePair("password", pw.getText().toString())); postParameters.add(new BasicNameValuePair("gestion","0")); String response = null; try { response = CustomHttpClient.executeHttpPost("192.168.1.108/index.php", postParameters); String res=response.toString(); res= res.replaceAll("\\s+",""); if(res.equals("1")) error.setText("Correct Username or Password"); else error.setText("Sorry!! Incorrect Username or Password"); } catch (Exception e) { un.setText(e.toString()); } } }); } } clase HTTP: public class CustomHttpClient { /** The time it takes for our client to timeout */ public static final int HTTP_TIMEOUT = 30 * 1000; // milliseconds /** Single instance of our HttpClient */ private static HttpClient mHttpClient; /** * Get our single instance of our HttpClient object. * * @return an HttpClient object with connection parameters set */ private static HttpClient getHttpClient() { if (mHttpClient == null) { mHttpClient = new DefaultHttpClient(); final HttpParams params = mHttpClient.getParams(); HttpConnectionParams.setConnectionTimeout(params, HTTP_TIMEOUT); HttpConnectionParams.setSoTimeout(params, HTTP_TIMEOUT); ConnManagerParams.setTimeout(params, HTTP_TIMEOUT); } return mHttpClient; } /** * Performs an HTTP Post request to the specified url with the * specified parameters. * * @param url The web address to post the request to * @param postParameters The parameters to send via the request * @return The result of the request * @throws Exception */ public static String executeHttpPost(String url, ArrayList<NameValuePair> postParameters) throws Exception { BufferedReader in = null; try { HttpClient client = getHttpClient(); HttpPost request = new HttpPost(url); UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(postParameters); request.setEntity(formEntity); HttpResponse response = client.execute(request); in = new BufferedReader(new InputStreamReader(response.getEntity().getContent())); StringBuffer sb = new StringBuffer(""); String line = ""; String NL = System.getProperty("line.separator"); while ((line = in.readLine()) != null) { sb.append(line + NL); } in.close(); String result = sb.toString(); return result; } finally { if (in != null) { try { in.close(); } catch (IOException e) { e.printStackTrace(); } } } } /** * Performs an HTTP GET request to the specified url. * * @param url The web address to post the request to * @return The result of the request * @throws Exception */ public static String executeHttpGet(String url) throws Exception { BufferedReader in = null; try { HttpClient client = getHttpClient(); HttpGet request = new HttpGet(); request.setURI(new URI(url)); HttpResponse response = client.execute(request); in = new BufferedReader(new InputStreamReader(response.getEntity().getContent())); StringBuffer sb = new StringBuffer(""); String line = ""; String NL = System.getProperty("line.separator"); while ((line = in.readLine()) != null) { sb.append(line + NL); } in.close(); String result = sb.toString(); return result; } finally { if (in != null) { try { in.close(); } catch (IOException e) { e.printStackTrace(); } } } } } este es el XML: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="210dip" android:layout_marginTop="10dip" android:background="#DDDDDD"> <TextView android:id="@+id/tv_un" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="10pt" android:textColor="#444444" android:layout_alignParentLeft="true" android:layout_marginRight="9dip" android:layout_marginTop="20dip" android:layout_marginLeft="10dip" android:text="User Name:"/> <EditText android:id="@+id/et_un" android:layout_width="150dip" android:layout_height="wrap_content" android:background="@android:drawable/editbox_background" android:layout_toRightOf="@id/tv_un" android:layout_alignTop="@id/tv_un"/> <TextView android:id="@+id/tv_pw" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="10pt" android:textColor="#444444" android:layout_alignParentLeft="true" android:layout_below="@id/tv_un" android:layout_marginRight="9dip" android:layout_marginTop="15dip" android:layout_marginLeft="10dip" android:text="Password:"/> <EditText android:id="@+id/et_pw" android:layout_width="150dip" android:layout_height="wrap_content" android:background="@android:drawable/editbox_background" android:layout_toRightOf="@id/tv_pw" android:layout_alignTop="@id/tv_pw" android:layout_below="@id/et_un" android:layout_marginLeft="17dip" android:password="true" /> <Button android:id="@+id/btn_login" android:layout_width="100dip" android:layout_height="wrap_content" android:layout_below="@id/et_pw" android:layout_alignParentLeft="true" android:layout_marginTop="15dip" android:layout_marginLeft="110dip" android:text="Login" /> <TextView android:id="@+id/tv_error" android:layout_width="fill_parent" android:layout_height="40dip" android:textSize="7pt" android:layout_alignParentLeft="true" android:layout_below="@id/btn_login" android:layout_marginRight="9dip" android:layout_marginTop="15dip" android:layout_marginLeft="15dip" android:textColor="#AA0000" android:text=""/> </RelativeLayout> trabajo en JAVA y me da el siguiente error al poner el email y el password: Java.lang.illegalStateException:Target host must not be null or set in parameters scheme=null, host=null, path=212.227.59.52/settings/gestionj.php |