public class Feedback extends ActivityGroup {
protected static LocalActivityManager mLocalActivityManager;
private EditText fd=null;
private Button send=null;
public int res_flag=0;
public String result="";
public String url="";
private RelativeLayout newaccount;
private TextView needhelp=null;
private String currentDateandTime="";
private boolean isonline;
protected String fd_text="";
public void replaceContentView(String id, Intent newIntent) {
View view = getLocalActivityManager().startActivity(id,newIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)) .getDecorView(); this.setContentView(view);
}
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.feedback);
initialization();
try{
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
currentDateandTime = sdf.format(new Date());
}catch (Exception e) {
System.out.println(e);
}
send.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
new Feedback.Retrieve().execute();
}
});
}
private void initialization()
{
fd=(EditText)findViewById(R.id.fd);
send=(Button)findViewById(R.id.send);
}
class Retrieve extends AsyncTask<Void, Integer, Integer> {
ProgressDialog pd = null;
#Override
protected void onPreExecute() {
// TODO Auto-generated method stub
super.onPreExecute();
pd = new ProgressDialog(Feedback.this);
pd.setMessage("Please wait while sending feedback..");
pd.setCancelable(false);
pd.show();
}
#Override
protected Integer doInBackground(Void... params) {
try{
System.out.println("IN BKGRND");
StrictMode.ThreadPolicy policy1 = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy1);
url="url"+fd_text.toString().trim()+"&datetime="+currentDateandTime;
url=url.replace(" ","%20");
url=url.replace("+","%2B");
System.out.println(url);
JSONObject json = JSONfunctions.getJSONfromURL(url);
JSONObject response1=json.getJSONObject("response");
result=response1.getString("Success").toString().trim();
System.out.println(result);
if(result.equalsIgnoreCase("1"))
{
System.out.println("Logged In");
res_flag=1;
}
else
{
System.out.println("failed");
res_flag=5;
}
}
catch (JSONException e) {
System.out.println(e);
}catch (Exception e) {
System.out.println(e);
}
return null;
}
#Override
protected void onPostExecute(Integer result) {
super.onPostExecute(result);
pd.dismiss();
}
Error is:
android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord#40e16110 is not valid; is your activity running?
PROBLEM
I calling activity through another tabhost.,It loading only the view .The webservice and button are not working ., When i click the buttons it shows above error.Help me to proceed guys..
Reference:
http://www.gamma-point.com/content/android-how-have-multiple-activities-under-single-tab-tabactivity
NOw the ActivityGroup is deprecated.., What should i use now..
For what you have posted, it doesn't seem like you need to use ActivityGroup at all. Simply extend your Feedback from Activity class. For example:
public class Feedback extends Activity
Related
I have a class AsyncCallWS that get content from webservice. It worked well. However, I want to get result in the class AsyncCallWS, namely returnServer string in the MainActivity . Could you help me to solve it?
public class MainActivity extends Activity {
String resultRegister;
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button btnRegister =(Button) findViewById(R.id.btnRegister);
btnRegister.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(final View v) {
new AsyncCallWS().execute("123");
Log.d("DDD",resultRegister);
if(resultRegister.equals("")) {
Log.d("D", "OK");
}
else
{
Log.d("E", "False");
}
}
});
}
private class AsyncCallWS extends AsyncTask<String, Void, Void> {
#Override
protected Void doInBackground(String... params) {
Log.i(TAG, "doInBackground");
String id_num = params[0];
//toast(id);
String url_registerID="server path"+id_num ;
try {
String returnServer=getStringContent(id);
Log.d("D",returnServer);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void result) {
Log.i(TAG, "onPostExecute");
}
#Override
protected void onPreExecute() {
Log.i(TAG, "onPreExecute");
}
#Override
protected void onProgressUpdate(Void... values) {
Log.i(TAG, "onProgressUpdate");
}
}
Remove 3rd parameter Void from this AsyncTask<String, Void, Void>
and replace it with String, i.e;
private class AsyncCallWS extends AsyncTask<String, Void, String>
After changing you'll get compilation errors in your doInBackground().. just change the return type from Void to String
protected String doInBackground(String... params)
Now you can get the String returned by this method in onPostExecute(String result)
The String result here is the String which is returned by doInBackground()
*EDIT *
public class MainActivity extends Activity {
String resultInActivity;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
new AsyncCallWS().execute("123");
//How to get respond from AsyncCallWS
}
private class AsyncCallWS extends AsyncTask<String, Void, Void> {
#Override
protected String doInBackground(String... params) {
Log.i(TAG, "doInBackground");
String id_num = params[0];
//toast(id);
String url_registerID="server path"+id_num ;
try {
String returnServer=getStringContent(id);
Log.d("D",returnServer);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return returnServer;
}
#Override
protected void onPostExecute(String result) {
Log.i(TAG, "onPostExecute");
resultInActivity = result;
if(resultRegister.equals("")) {
Log.d("D", "OK");
}
else
{
Log.d("E", "False");
}
}
#Override
protected void onPreExecute() {
Log.i(TAG, "onPreExecute");
}
#Override
protected void onProgressUpdate(Void... values) {
Log.i(TAG, "onProgressUpdate");
}
} // Asyntask ends
} // activity ends
The response from AsyncTask is produced in onPostExecute() from there you can perform tasks based on the response etc.
I highly recommend you read the AsyncTask Life Cycle
private class AsyncCallWS extends AsyncTask
Replace the third parameter with String which results doInBackground return String and corresponding postExecute method parameter as String
protected String doInBackground(String... params)
protected void onPostExecute(String result)
In Order to get it on MainActivity you have to do the following Steps
Create an Interface anywhere you want to and declare a method of any name which should have parameter of type String
interface ResponseHandler
{
void onResponse(String result)
}
In the MainActivity you have to implement that interface and you will
get the data here in this method
ResponseHandler handler = new ResponseHandler(){
#override
public void onResponse(String result)
{
// enter code here
}
};
After implementing this interface you can provide the instance of it to the AsyncTask constructor.
AsyncTask task = new AsyncTask(handler);
You will get the reference of ResponseHandler in AsyncTask
public AsyncTaskClass(ResponseHandler handler)
{
this.handler = handler
}
//enter code here
void onPostExecute(String result)
{
handler.onResponse(result)
}
This way you will get the result in your MainActivity.
I am doing socket programming and getting JSON response. Everything is working perfectly but the only thing that is getting me in trouble is that I start another activity before getting response but I want to get all response and after that start another activity.
Here is my code.
jsonobject1.put("username", edt.getText().toString());
jsonobject1.put("udid",
"A892E0AB-6732-4F42-BEFA-3157315E9EE4");
try {
socket.emit("setPseudo", jsonobject1);
socket.emit("findAllUsers", jsonobject1);
Log.e("TAG",""+ socket.getId());
Intent intent = new Intent(MainActivity.this,
MenuScreen.class);
intent.putExtra("onlineuser", onlineuser);
intent.putExtra("finduser", finduserjson);
startActivity(intent);
In my above code I am sending JSON data to server and getting JSON object in response. But before getting the response I am being sent to another activity. So I first want response and then start activity. Help me with some pseudo code.
Thanks
Create an AsyncTask class
public class GetJSONResult extends AsyncTask<String, Void, Void>
{
ProgressDialog pd ;
private Context _context;
public GetJSONResult(Context c)
{
_context = c;
}
protected void onPreExecute()
{
super.onPreExecute();
pd = new ProgressDialog(_context);
pd.setTitle("Getting JSON details");
pd.setMessage("Please wait...");
pd.setCancelable(false);
pd.setIndeterminate(true);
pd.show();
}
#Override
protected Void doInBackground(String... params) {
// TODO Auto-generated method stub
try
{
jsonobject1.put("username", params[0]); // params[0] is the value passed i.e edittext value
jsonobject1.put("udid",
"A892E0AB-6732-4F42-BEFA-3157315E9EE4")
socket.emit("setPseudo", jsonobject1);
socket.emit("findAllUsers", jsonobject1);
Log.e("TAG",""+ socket.getId());
}
catch (Exception e)
{
if (pd.isShowing())
pd.dismiss();
}
return null;
}
protected void onPostExecute(Void v)
{
super.onPostExecute(v);
try
{
if (pd.isShowing())
pd.dismiss();
}
catch(Exception e)
{
}
Intent intent = new Intent(MainActivity.this,
MenuScreen.class);
intent.putExtra("onlineuser", onlineuser);
intent.putExtra("finduser", finduserjson);
startActivity(intent);
}
}
Form your MainActivity call the AsyncTask like this
public MainActivity extends Activity
{
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.your_layout);
// First get the reference to EditText using findViewById, then
String s = edt.getText().toString();
// Call the AsyncTask
new GetJSONResult(MainActivity.this).execute(s); // pass the edittext value to doInBackGround method.
}
}
private class getResponse extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
progressDialog = new ProgressDialog(getActivity());
progressDialog.setMessage("Loading...");
progressDialog.setCancelable(false);
progressDialog.show();
}
#Override
protected Void doInBackground(Void... arg0) {
jsonobject1.put("username", edt.getText().toString());
jsonobject1.put("udid",
"A892E0AB-6732-4F42-BEFA-3157315E9EE4");
try {
socket.emit("setPseudo", jsonobject1);
socket.emit("findAllUsers", jsonobject1);
Log.e("TAG",""+ socket.getId());
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
// Dismiss the progress dialog
if (progressDialog.isShowing()) {
progressDialog.dismiss();
}
Intent intent = new Intent(MainActivity.this,
MenuScreen.class);
intent.putExtra("onlineuser", onlineuser);
intent.putExtra("finduser", finduserjson);
startActivity(intent);
}
#Override
protected void onCancelled() {
super.onCancelled();
progressDialog.dismiss();
}
}
and for executing new getResponse().execute();
I use this code inorder to get the content of some website.
the textview stay empty. What I am doing wrong?
I added the jar into librires and also add internet permission to manifest.
public class MainActivity extends Activity {
MyTask mt;
TextView tvInfo;
String URL="http://www.example.com/";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvInfo = (TextView) findViewById(R.id.textView1);
}
public void onclick(View v) {
mt = new MyTask();
mt.execute(URL);
}
class MyTask extends AsyncTask<String, Void, String> {
Document doc;
String title=null;
#Override
protected void onPreExecute() {
super.onPreExecute();
tvInfo.setText("Please wait");
}
#Override
protected String doInBackground(String... params) {
try {
TimeUnit.SECONDS.sleep(2);
// doc = Jsoup.connect(params[0]).get();
// String title = doc.title();
doc = Jsoup.connect("http://www.example.com/").get();
Element content = doc.select("a").first();
title = content.text();
Log.d("AsyncTask doInBackground","URL: " + params[0]);
} catch (InterruptedException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return title;
}
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
tvInfo.setText(title);
}
}
}
I also not understand excaly when each method here is called
THANKS A LOT!
EDIT - the code after what was suggested in answer. Still not working:
public class MainActivity extends Activity implements OnClickListener{
MyTask mt;
TextView tvInfo;
String URL="http://www.example.com/";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvInfo = (TextView) findViewById(R.id.textView1);
tvInfo.setOnClickListener(this);
}
private class MyTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
String title = "hh";
try{
Document doc = Jsoup.connect("http://google.com").userAgent("Mozilla").get();
title = doc.title();
System.out.println("title : " + title);
// get all links
Elements links = doc.select("a[href]");
for (Element link : links) {
// get the value from href attribute
System.out.println("\nlink : " + link.attr("href"));
System.out.println("text : " + link.text());
}
}
catch (IOException e) {
e.printStackTrace();
}
return title;
}
#Override
protected void onPostExecute(String result) {
tvInfo.setText(result);
}
#Override
protected void onPreExecute() {
tvInfo.setText("Please wait");
}
}
#Override
public void onClick(View v) {
mt = new MyTask();
mt.execute(URL);
}
}
The AsyncTask executes everything in doInBackground() inside of another thread, which does not have access to the GUI where your views are.
preExecute() and postExecute() offer you access to GUI before and after the heavy lifting occurs in this new thread, you can even pass the result of the long operation to postExecute() to then show any results of processing.
private class MyTask extends AsyncTask<String, Void, String> {
#Override
protected String doInBackground(String... params) {
try{
Document doc = Jsoup.connect("http://google.com").userAgent("Mozilla").get();
String title = doc.title();
System.out.println("title : " + title);
// get all links
Elements links = doc.select("a[href]");
for (Element link : links) {
// get the value from href attribute
System.out.println("\nlink : " + link.attr("href"));
System.out.println("text : " + link.text());
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
protected void onPostExecute(String result) {
}
#Override
protected void onPreExecute() {
super.onPreExecute();
tvInfo.setText("Please wait");
}
}
i have search and not found the answer. I want to call startActvity(newintent), but the page not change.
This my code:
public class MainActivity extends Activity {
private TextView IdPeserta, Password;
//private ArrayList<NameValuePair> authentication;
#SuppressWarnings("unused")
//private String temp, _nama = "";
//private readURL rL;
public static String username = "";
public static String password = "";
public static String status = "FALSE";
public void setPassword(String password){
MainActivity.password = password;
}
public void setUsername(String username){
MainActivity.username = username;
}
public void setStatus(String status){
MainActivity.status = status;
}
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
IdPeserta = (TextView) findViewById(R.id.idPeserta);
Password = (TextView) findViewById(R.id.password);
}
public void Login(View view){
setUsername(IdPeserta.getText().toString());
setPassword(Password.getText().toString());
if((IdPeserta.getText().length() > 0 && Password.getText().length() > 0)){
RestTask task = new RestTask();
task.applicationContext = MainActivity.this;
task.execute();
}else{
Toast.makeText(this,"fill Id Peserta and Password 1", 0).show();
}
}
public void authenticate(){
if(status.equals("TRUE")){
Intent i = new Intent(MainActivity.this, Home.class);
//PendingIntent pending = PendingIntent.getActivity(this, 0, i, 0);
startActivity(i);
finish();
}else if(status.equals("FALSE")){
Log.d("gagal", "coba lagi");
}
}
public static String getService() {
String responseString = null;
String baseurlString = "http://10.0.2.2:8080/UjianServices/authentikasi.php";
RestClient client = new RestClient(baseurlString);
client.AddParam("id_peserta", MainActivity.username);
client.AddParam("password", MainActivity.password);
try {
client.Execute(RequestMethod.POST);
} catch (Exception e) {
Log.d("error", e.getMessage());
//e.printStackTrace();
}
responseString = client.getResponse();
return responseString;
}
public class RestTask extends AsyncTask<Object, Object, Object>{
private ProgressDialog dialog;
protected Context applicationContext;
#Override
protected void onPreExecute() {
this.dialog = ProgressDialog.show(applicationContext, "Calling", "Time Service...", true);
}
#Override
protected void onPostExecute(Object result) {
this.dialog.cancel();
String status = result.toString();
setStatus(status);
authenticate();
}
#Override
protected Object doInBackground(Object... arg0) {
return MainActivity.getService();
}
}
}
When i did not using the RestTask it can change the page. How i change my activity?
because applicationContext is null you have not initialize applicationContext before using it for showing ProgressDialog from onPreExecute .
you need to initialize applicationContext before using for showing ProgressDialog or just use MainActivity.this as :
#Override
protected void onPreExecute() {
applicationContext=MainActivity.this; //<<< initialize context here
this.dialog = ProgressDialog.show(applicationContext,
"Calling", "Time Service...", true);
}
This is my code:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i(TAG, "onCreate");
setContentView(R.layout.list);
new GetBlockListAsyncTask().execute(BlockListActivity.this);
}
public void initializeDialog() {
dialog = ProgressDialog.show(BlockListActivity.this, "", "Loading data. Wait...", true);
dialog.show();
}
public void dismissDialog(){
dialog.dismiss();
}
The GetBlockListAsyncTask:
public class GetBlockListAsyncTask extends AsyncTask<Object, Boolean, String>{
private BlockListActivity callerActivity;
private String TAG = "GetBlockListAsyncTask";
private String stringCode = "";
#Override
protected String doInBackground(Object... params) {
callerActivity = (BlockListActivity)params[0];
try {
Log.d(TAG, "Start to sleep");
Thread.sleep(4000);
Log.d(TAG, "End sleep");
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String response) {
callerActivity.dismissDialog();
}
#Override
protected void onPreExecute() {
callerActivity.initializeDialog();
}
}
It will show error:
'Caused by: java.lang.NullPointerException'
onPreExecute(GetBlockListAsyncTask.java:101)
I find a solution is that if I move the initializeDialog out of the AsyncTask and put it before the line new GetBlockListAsyncTask().execute(BlockListActivity.this); in onCreate, it works.
The question is how to make it work if I want to put the initializeDialog in the AsyncTask .
Try adding a public constructor to your AsyncTask that accepts the Activity Context as the first argument:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Create a new AsyncTask with the Activity Context
AsyncTask task = new GetBlockListAsyncTask(this);
// Execute the task
task.execute();
}
public class GetBlockListAsyncTask extends AsyncTask<Object, Boolean, String> {
private Context activityContext;
private String TAG = "GetBlockListAsyncTask";
private String stringCode = "";
//Constructor
public GetBlockListAsyncTask(Context c) {
// Store the activity context
activityContext = c;
}
#Override
protected String doInBackground(Object... params) {
try {
Log.d(TAG, "Start to sleep");
Thread.sleep(4000);
Log.d(TAG, "End sleep");
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String response) {
activityContext.dismissDialog();
}
#Override
protected void onPreExecute() {
activityContext.initializeDialog();
}
}