package com.androidnew;
import android.app.Activity;
import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity
{
JSONParser jsonparser = new JSONParser();
EditText id;
EditText password;
static final String TAG_SUCCESS = "success";
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addListenerOnButton();
}
public void addListenerOnButton()
{
id = (EditText) findViewById(R.id.user_id);
password = (EditText) findViewById(R.id.user_password);
Button btnlogin = (Button) findViewById(R.id.login);
btnlogin.setOnClickListener(new View.OnClickListener() {
public void onClick(View view)
{
String text1 = id.getText().toString();
String text2 = password.getText().toString();
Intent intent = new Intent(getApplicationContext(), Subject_Register.class);
intent.putExtra("ID", text1);
intent.putExtra("PASS", text2);
startActivity(intent);
finish();
}
});
}
}
and this for retrieve the data from page login to DB and view in my apps....
package com.androidnew;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class Subject_Register extends Activity{
Button next;
EditText user_id;
EditText user_password;
TextView matrix_no;
TextView name;
TextView faculty;
TextView session;
TextView section_group;
TextView year_semester;
TextView course_code;
TextView course_name;
private ProgressDialog pDialog;
JSONParser jParser = new JSONParser();
private static final String url_user = "http://10.131.75.125/android_baru/login.php";
private static final String TAG_SUCCESS = "success";
private static final String TAG_user_details = "user_details";
private static final String TAG_user = "user";
private static final String TAG_ID = "username";
private static final String TAG_PASS = "password";
private static final String TAG_matrix_no = "matrix_no";
private static final String TAG_name = "name";
private static final String TAG_faculty = "faculty";
private static final String TAG_session = "session";
private static final String TAG_section_group = "section_group";
private static final String TAG_year_semester = "year_semester";
private static final String TAG_course_name = "course_name";
private static final String TAG_course_code = "course_code";
String ID;
String PASS;
TextView txtView1;
TextView txtView2;
TextView txtView3;
TextView txtView4;
TextView txtView5;
TextView txtView6;
TextView txtView7;
TextView txtView8;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.subject_register);
addListenerOnNext();
Intent i = getIntent();
ID = i.getStringExtra(TAG_ID);
PASS = i.getStringExtra(TAG_PASS);
new user_details().execute(); //class
}
class user_details extends AsyncTask<String, String, String> {
String id,pin;
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Subject_Register.this);
pDialog.setMessage("Retrive data..Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
protected String doInBackground (String...params) {
runOnUiThread(new Runnable() {
public void run() {
int success = 0;
try {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("ID",ID));
params.add(new BasicNameValuePair("PASS",PASS));
JSONObject json = jParser.makeHttpRequest(url_user, "GET", params);
Log.d("User Details", json.toString());
success = json.getInt(TAG_SUCCESS);
if(success == 1) {
JSONArray user_details = json.getJSONArray(TAG_user);
JSONObject user = user_details.getJSONObject(0);
//user with this pid found
matrix_no = (TextView) findViewById(R.id.matrix_no);
name = (TextView) findViewById(R.id.name);
faculty = (TextView) findViewById(R.id.faculty);
session = (TextView) findViewById(R.id.session);
section_group = (TextView) findViewById(R.id.section_group);
course_code = (TextView) findViewById(R.id.course_code);
course_name = (TextView) findViewById(R.id.course_name);
year_semester = (TextView) findViewById(R.id.year_semester);
//display user data in edittext
matrix_no.setText(user.getString(TAG_matrix_no));
name.setText(user.getString(TAG_name));
faculty.setText(user.getString(TAG_faculty));
session.setText(user.getString(TAG_session));
section_group.setText(user.getString(TAG_section_group));
course_code.setText(user.getString(TAG_course_code));
course_name.setText(user.getString(TAG_course_name));
year_semester.setText(user.getString(TAG_year_semester));
}else{
}
}
catch (JSONException e) {
e.printStackTrace();
}
}
});
return null;
}
protected void onPostExecute(String file_url) {
pDialog.dismiss();
}
}
private void addListenerOnNext() {
// TODO Auto-generated method stub
final Context context = this;
next = (Button) findViewById(R.id.next);
next.setOnClickListener(new OnClickListener(){
public void onClick(View arg0){
Intent intent = new Intent (context, Subject.class);
startActivity(intent);
finish();
}
});
}}
thanks for concern... :)
答案 0 :(得分：0)
您正在经过“身份证”和“通行证”。
更改
private static final String TAG_ID = "username";
private static final String TAG_PASS = "password";
到
private static final String TAG_ID = "ID";
private static final String TAG_PASS = "PASS";
（OR）
您可以通过
直接检索ID = i.getStringExtra("ID");
PASS = i.getStringExtra("PASS");
另外，设置
Intent intent = new Intent (youractivity.this, Subject.class);
而不是
Intent intent = new Intent (context, Subject.class);