Develop Reference

TextWatcher shuts down my application after starting up

My app keeps crashing since I started using a TextWatcher...
As you can see below i made a TextWatcher to 3 EditText fields...
And i made a button which listens to the 3 EditText..
If they are empty the button become disabled.
When the fields are filled the button should become enabled..
package com.example.magazijnapp;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.MenuPopupWindow;
import android.content.DialogInterface;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.SpinnerAdapter;
import android.widget.Switch;
import android.widget.TextView;
import android.widget.Toast;
import org.w3c.dom.Text;
import java.sql.Array;
public class MainActivity extends AppCompatActivity {
Spinner spinnermagazijn;
Button knop;
private EditText EditTextregisternummerbalk;
private EditText EditTextticketnummerbalk;
private EditText EditTextartikelnummerbalk;
private Button knopconfirm;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
EditTextregisternummerbalk = findViewById(R.id.registernummerbalk);
EditTextticketnummerbalk = findViewById(R.id.ticketnummerbalk);
EditTextartikelnummerbalk = findViewById(R.id.artikelnummerbalk);
knopconfirm = findViewById(R.id.knop);
EditTextregisternummerbalk.addTextChangedListener(invulTextWatcher);
EditTextticketnummerbalk.addTextChangedListener(invulTextWatcher);
EditTextartikelnummerbalk.addTextChangedListener(invulTextWatcher);
}
private TextWatcher invulTextWatcher = new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
String registernummerinput = EditTextregisternummerbalk.getText().toString().trim();
String ticketnummerinput = EditTextticketnummerbalk.getText().toString().trim();
String artikelnummerinput = EditTextartikelnummerbalk.getText().toString().trim();
knopconfirm.setEnabled(!registernummerinput.isEmpty() && !ticketnummerinput.isEmpty() &&! artikelnummerinput.isEmpty());
}
#Override
public void afterTextChanged(Editable s) {
}
};
{
spinnermagazijn = findViewById(R.id.spinnermagazijn);
knop = findViewById(R.id.knop);
populatespinnermagazijn();
// Dit is het stukje voor de Knop afboeken waarmee je een melding genereerd, String aanpassen voor ander resultaat.
knop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, (R.string.succes), Toast.LENGTH_SHORT) .show();
}
});
}
// Dit gedeelte is voor de spinner.
private void populatespinnermagazijn() {
ArrayAdapter<String> magazijnenAdapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_item, getResources().getStringArray(R.array.steunpunten));
magazijnenAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnermagazijn.setAdapter(magazijnenAdapter);
}
}
And this is my logcat...
03-19 21:04:06.293 21151-21151/? E/libprocessgroup: failed to make and chown /acct/uid_10060: Read-only file system
03-19 21:04:06.293 21151-21151/? W/Zygote: createProcessGroup failed, kernel missing CONFIG_CGROUP_CPUACCT?
03-19 21:04:06.293 21151-21151/? I/art: Not late-enabling -Xcheck:jni (already on)
03-19 21:04:06.313 21151-21161/? I/art: Debugger is no longer active
03-19 21:04:06.351 21151-21151/? D/AndroidRuntime: Shutting down VM
03-19 21:04:06.354 21151-21151/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.magazijnapp, PID: 21151
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.magazijnapp/com.example.magazijnapp.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.pm.ApplicationInfo android.content.Context.getApplicationInfo()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2236)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.pm.ApplicationInfo android.content.Context.getApplicationInfo()' on a null object reference
at android.content.ContextWrapper.getApplicationInfo(ContextWrapper.java:149)
at android.view.ContextThemeWrapper.getTheme(ContextThemeWrapper.java:99)
at android.content.Context.obtainStyledAttributes(Context.java:437)
at androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor(AppCompatDelegateImpl.java:692)
at androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor(AppCompatDelegateImpl.java:659)
at androidx.appcompat.app.AppCompatDelegateImpl.findViewById(AppCompatDelegateImpl.java:479)
at androidx.appcompat.app.AppCompatActivity.findViewById(AppCompatActivity.java:214)
at com.example.magazijnapp.MainActivity.<init>(MainActivity.java:73)
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.Class.newInstance(Class.java:1606)
at android.app.Instrumentation.newActivity(Instrumentation.java:1066)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2226)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) 
at android.app.ActivityThread.access$800(ActivityThread.java:151) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:135) 
at android.app.ActivityThread.main(ActivityThread.java:5254) 
at java.lang.reflect.Method.invoke(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:372) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 
03-19 21:04:07.996 21151-21151/? I/Process: Sending signal. PID: 21151 SIG: 9

There are two findViewById(R.id.knop);
remove this line:
knop = findViewById(R.id.knop);
and change :
knopconfirm.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, (R.string.succes), Toast.LENGTH_SHORT) .show();
}
});

You are saying your app is crashing since you started using TextWatcher. So why don't you stop using it?
you can achieve the same thing without using TextWatcher by doing this.
knop.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String registernummerinput = EditTextregisternummerbalk.getText().toString().trim();
String ticketnummerinput = EditTextticketnummerbalk.getText().toString().trim();
String artikelnummerinput = EditTextartikelnummerbalk.getText().toString().trim();
if((!registernummerinput.isEmpty() && !ticketnummerinput.isEmpty() &&! artikelnummerinput.isEmpty())) {
Toast.makeText(MainActivity.this, (R.string.succes), Toast.LENGTH_SHORT) .show();
}
}
});
you will not need any TextWathcer just modify the listner

Unable to instantiate activity: class com.pz.mediatonmessanger.ChatDialogActivity has no zero argument constructor

Errors and Chat Activity Dialog looks like this.
04-09 09:03:23.509 2722-2722/com.pz.mediatonmessanger E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.pz.mediatonmessanger, PID: 2722
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.pz.mediatonmessanger/com.pz.mediatonmessanger.ChatDialogActivity}: java.lang.InstantiationException: class com.pz.mediatonmessanger.ChatDialogActivity has no zero argument constructor
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2209)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: java.lang.InstantiationException: class com.pz.mediatonmessanger.ChatDialogActivity has no zero argument constructor
at java.lang.Class.newInstance(Class.java:1563)
at android.app.Instrumentation.newActivity(Instrumentation.java:1065)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2199)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: java.lang.NoSuchMethodException: <init> []
at java.lang.Class.getConstructor(Class.java:531)
at java.lang.Class.getDeclaredConstructor(Class.java:510)
at java.lang.Class.newInstance(Class.java:1561)
at android.app.Instrumentation.newActivity(Instrumentation.java:1065)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2199)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Code
package com.pz.mediatonmessanger;
import android.app.ProgressDialog;
import android.content.Intent;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import com.pz.mediatonmessanger.Adapter.ChatDialogsAdapter;
import com.quickblox.auth.QBAuth;
import com.quickblox.auth.session.BaseService;
import com.quickblox.auth.session.QBSession;
import com.quickblox.chat.QBChatService;
import com.quickblox.chat.QBRestChatService;
import com.quickblox.chat.model.QBChatDialog;
import com.quickblox.core.QBEntityCallback;
import com.quickblox.core.exception.BaseServiceException;
import com.quickblox.core.exception.QBResponseException;
import com.quickblox.core.request.QBRequestBuilder;
import com.quickblox.core.request.QBRequestGetBuilder;
import com.quickblox.users.model.QBUser;
import java.util.ArrayList;
public class ChatDialogActivity extends AppCompatActivity {
FloatingActionButton floatingActionButton;
ListView lstChatDialogs;
public ChatDialogActivity(FloatingActionButton floatingActionButton) {
this.floatingActionButton = floatingActionButton;
}
public ChatDialogActivity(ListView lstChatDialogs) {
this.lstChatDialogs = lstChatDialogs;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat_dialog);
createSessionForChat();
lstChatDialogs = (ListView)findViewById(R.id.lstChatDialogs);
loadChatDialogs();
floatingActionButton = (FloatingActionButton) findViewById(R.id.chatdialog_adduser);
floatingActionButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(ChatDialogActivity.this, ListUsersActivity.class );
startActivity(intent);
}
});
}
private void loadChatDialogs() {
QBRequestGetBuilder requestBuilder = new QBRequestGetBuilder();
requestBuilder.setLimit(100);
QBRestChatService.getChatDialogs(null,requestBuilder).performAsync(new QBEntityCallback<ArrayList<QBChatDialog>>() {
#Override
public void onSuccess(ArrayList<QBChatDialog> qbChatDialogs, Bundle bundle) {
//Kod
ChatDialogsAdapter adapter = new ChatDialogsAdapter(getBaseContext(),qbChatDialogs);
lstChatDialogs.setAdapter(adapter);
adapter.notifyDataSetChanged();
}
#Override
public void onError(QBResponseException e) {
Log.e("Błąd",e.getMessage());
}
});
}
private void createSessionForChat() {
final ProgressDialog mDialog = new ProgressDialog(ChatDialogActivity.this);
mDialog.setMessage("Ładowanie...");
mDialog.setCanceledOnTouchOutside(false);
mDialog.show();
String user,password;
user = getIntent().getStringExtra("user");
password = getIntent().getStringExtra("password");
final QBUser qbUser = new QBUser(user,password);
QBAuth.createSession(qbUser).performAsync(new QBEntityCallback<QBSession>() {
#Override
public void onSuccess(QBSession qbSession, Bundle bundle) {
qbUser.setId(qbSession.getUserId());
try {
qbUser.setPassword(BaseService.getBaseService().getToken());
} catch (BaseServiceException e) {
e.printStackTrace();
}
QBChatService.getInstance().login(qbUser, new QBEntityCallback() {
#Override
public void onSuccess(Object o, Bundle bundle) {
mDialog.dismiss();
}
#Override
public void onError(QBResponseException e) {
Log.e("Błąd",""+e.getMessage());
}
});
}
#Override
public void onError(QBResponseException e) {
}
});
}
}

Activities don't have a constructor in Android, you can't create them as you do with other classes. They are instantiated by the system, all you need to do is to start them with context.startActivity(intent).
Remove all the constructors from this Activity and get a reference to the views with findViewById and you should be fine

Android display SD card files throws java.lang.NullPointerException

This is the MainActivity file. When I run it in the emulator and phone, logcat displays a crash due to a NullPointerException. I've read a lot about not letting the user or another activity pass "null" value to my method but could not get around this.
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.io.File;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//I used a listview with id= "filelist" in layout
ListView lv;
ArrayList<String> FilesInFolder;
FilesInFolder = GetFiles(Environment.getExternalStorageDirectory().getPath()+ "/sdcard/");
lv = (ListView)findViewById(R.id.filelist);
ArrayAdapter<String> listAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, FilesInFolder);
lv.setAdapter(listAdapter);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
// Clicking on items
}
});
}
public ArrayList<String> GetFiles(String DirectoryPath) {
ArrayList<String> MyFiles = new ArrayList<String>();
File f = new File(DirectoryPath);
f.mkdirs();
File[] files = f.listFiles();
if (files.length == 0)
return null;
else {
for (int i=0; i<files.length; i++)
MyFiles.add(files[i].getName());
}
return MyFiles;
}
}
This is the logcat:
07-02 01:09:40.500 4407-4407/com.amenhotep.filelister W/dalvikvm: threadid=1: calling UncaughtExceptionHandler
07-02 01:09:40.501 4407-4407/com.amenhotep.filelister E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.amenhotep.filelister, PID: 4407
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.amenhotep.filelister/com.amenhotep.filelister.MainActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2389)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2441)
at android.app.ActivityThread.access$900(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5345)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at com.amenhotep.filelister.MainActivity.GetFiles(MainActivity.java:44)
at com.amenhotep.filelister.MainActivity.onCreate(MainActivity.java:24)
at android.app.Activity.performCreate(Activity.java:5343)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1088)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2343)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2441)
at android.app.ActivityThread.access$900(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1354)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5345)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:824)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:640)
at dalvik.system.NativeStart.main(Native Method)

the problem is in your sdcard path, use this code to get path of sdcard
String DIR_SDCARD = Environment.getExternalStorageDirectory().getAbsolutePath();
and there is no need to add "/sdcard/" to it, also change your GetFiles method, and remove mkdirs() because sdcard exists before.
look at this example
File sdcard_files_and_folders[] = new File(DIR_SDCARD).listFiles();
for (File fileOrFolder: sdcard_files_and_folders) {
// do any thing that you want, add them to list or...
Log.i("FILE", fileOrFolder.toString());
}

Pass edittext value from android to web services

I want to pass edit text value from android to web services, but i can not do that every time it returns a null value.
This is my simple web services.
package org.me.mongodb;
import javax.jws.WebService;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.ejb.Stateless;
#WebService(serviceName = "Simple")
#Stateless()
public class Simple {
public String testMyProps(#WebParam(name = "name")String fname){
return "First Name : "+fname;
}
}
and android code;
package com.prgguru.android;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.serialization.PropertyInfo;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpTransportSE;
import com.example.webserviceactivity.R;
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 MainActivity extends Activity {
private static final String SOAP_ACTION = "";
private static final String METHOD_NAME = "testMyProps";
private static final String NAMESPACE = "http://mongodb.me.org/";
private static final String URL = "http://10.0.2.2:8080/Simple/Simple?WSDL";
private String TAG = "PGGURU";
private static String barge="";
private static String info;
Button b;
TextView tv;
EditText et;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
et = (EditText) findViewById(R.id.editText1);
tv = (TextView) findViewById(R.id.tv_result);
//Button to trigger web service invocation
b = (Button) findViewById(R.id.button1);
//Button Click Listener
b.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
//Check if barge text control is not empty
if (et.getText().length() != 0 && et.getText().toString() != "") {
//Get the text control value
barge = et.getText().toString();
//Create instance for AsyncCallWS
AsyncCallWS task = new AsyncCallWS();
//Call execute
task.execute();
//If text control is empty
} else {
tv.setText("Please enter Barge Name");
}
}
});
}
public void testMyProps(String fname) {
//Create request
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
//Property which holds input parameters
PropertyInfo getinfo = new PropertyInfo();
//Set Name
getinfo.setName("arg0");
//Set Value
getinfo.setValue(fname);
//Set dataType
getinfo.setType(String.class);
//Add the property to request object
request.addProperty(getinfo);
//Create envelope
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
SoapEnvelope.VER11);
envelope.dotNet = true;
//Set output SOAP object
envelope.setOutputSoapObject(request);
//Create HTTP call object
HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
try {
//Invole web service
androidHttpTransport.call(SOAP_ACTION, envelope);
//Get the response
SoapPrimitive response = (SoapPrimitive) envelope.getResponse();
//Assign it to info static variable
info = response.toString();
} catch (Exception e) {
e.printStackTrace();
}
}
private class AsyncCallWS extends AsyncTask<String, Void, Void> {
#Override
protected Void doInBackground(String... params) {
Log.i(TAG, "doInBackground");
testMyProps(barge);
return null;
}
#Override
protected void onPostExecute(Void result) {
Log.i(TAG, "onPostExecute");
tv.setText(info);
}
#Override
protected void onPreExecute() {
Log.i(TAG, "onPreExecute");
tv.setText("Getting...");
}
#Override
protected void onProgressUpdate(Void... values) {
Log.i(TAG, "onProgressUpdate");
}
}
}
It returns First name null;
Please help i think i cannot pass the value to web services.
Thanks a lot.
Iam getting this error,
12-11 09:45:53.291: E/AndroidRuntime(1920): FATAL EXCEPTION: main
12-11 09:45:53.291: E/AndroidRuntime(1920): java.lang.IllegalStateException: Cannot execute task: the task is already running.
12-11 09:45:53.291: E/AndroidRuntime(1920): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:575)
12-11 09:45:53.291: E/AndroidRuntime(1920): at android.os.AsyncTask.execute(AsyncTask.java:534)
12-11 09:45:53.291: E/AndroidRuntime(1920): at com.prgguru.android.MainActivity$1.onClick(MainActivity.java:57)
12-11 09:45:53.291: E/AndroidRuntime(1920): at android.view.View.performClick(View.java:4240)
12-11 09:45:53.291: E/AndroidRuntime(1920): at android.view.View$PerformClick.run(View.java:17721)
12-11 09:45:53.291: E/AndroidRuntime(1920): at android.os.Handler.handleCallback(Handler.java:730)
12-11 09:45:53.291: E/AndroidRuntime(1920): at android.os.Handler.dispatchMessage(Handler.java:92)
12-11 09:45:53.291: E/AndroidRuntime(1920): at android.os.Looper.loop(Looper.java:137)
12-11 09:45:53.291: E/AndroidRuntime(1920): at android.app.ActivityThread.main(ActivityThread.java:5103)
12-11 09:45:53.291: E/AndroidRuntime(1920): at java.lang.reflect.Method.invokeNative(Native Method)
12-11 09:45:53.291: E/AndroidRuntime(1920): at java.lang.reflect.Method.invoke(Method.java:525)
12-11 09:45:53.291: E/AndroidRuntime(1920): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
12-11 09:45:53.291: E/AndroidRuntime(1920): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
12-11 09:45:53.291: E/AndroidRuntime(1920): at dalvik.system.NativeStart.main(Native Method)
12-11 09:45:55.031: I/Process(1920): Sending signal. PID: 1920 SIG: 9

You are setting barge with the EditText value but you are not sending it inside AsyncTask
barge = et.getText().toString();
//Create instance for AsyncCallWS
AsyncCallWS task = new AsyncCallWS();
if(barge != null && !barge.equals("")) { // if barge is not an empty string and not null
task.execute(barge);
// return null; i don't think u need this return statement
}
And then in your AsyncTask Class
#Override
protected Void doInBackground(String... params) {
Log.i(TAG, "doInBackground: barge is " + params[0]);
testMyProps(params[0]);
}
I think when you instantiate AsyncCallWS, you will have to send the barge in as params.

Android App crashing in method when used on actual device but works fully in Eclipse

This is a Android application with sdk set as:
<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="11"/>
The problem is that the app will run fine in the Eclipse Environment on a AVD. When I install directly to the phone or even set the phone as the device to use in Eclipse the app fails in the below area of code. To narrow down where the error was occurring I placed some toast's along the way and the "clicked" toast displays but the "Intent Created" does not. So that leaves me with only 2 lines, but I can not figure out for the life of me why it dies in that area. Code of the method with the toast's in it is as follows:
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String bid = ((TextView) view.findViewById(R.id.bid)).getText()
.toString();
Toast.makeText(getApplicationContext(), "clicked", Toast.LENGTH_LONG).show();
Intent in = new Intent(getApplicationContext(),
BusinessDetails.class);
in.putExtra(TAG_BID, bid);
Toast.makeText(getApplicationContext(), "Intent Created", Toast.LENGTH_LONG).show();
startActivityForResult(in, 100);
}
});
BusinessDetails Class to the bundle method is as follows:
package com.example.businessLookUp;
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.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RatingBar;
import android.widget.TextView;
import android.widget.Toast;
public class BusinessDetails extends Activity {
EditText txtDesc;
Button btnSave;
String bid;
String _bname;
String _phone;
String _address;
String _city;
String _state;
String _zip;
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
private static final String url_business_detials = "http://192.168.1.2/get_business_details.php";
private static final String url_update_details = "http://192.168.1.2/update_business.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
private static final String TAG_BUSINESS = "business";
private static final String TAG_BID = "bid";
private static final String TAG_NAME = "name";
private static final String TAG_ADDRESS = "address";
private static final String TAG_CITY = "city";
private static final String TAG_STATE = "state";
private static final String TAG_ZIP = "zip";
private static final String TAG_PHONE = "phone";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.edit_business);
// save button
btnSave = (Button) findViewById(R.id.btnSave);
Intent i = getIntent();
bid = i.getStringExtra(TAG_BID);
Toast.makeText(getApplicationContext(), "check 1", Toast.LENGTH_LONG).show();
// Getting complete product details in background thread
new GetBusinessDetails().execute();
The BusinessDetails was truncated here because the line below is never reached:
Toast.makeText(getApplicationContext(), "check 1", Toast.LENGTH_LONG).show();
which tells me that the code is never even reached... Any ideas where this is going wrong at???
LogCat Exception:
10-27 16:39:28.834: E/AndroidRuntime(25260): FATAL EXCEPTION: main
10-27 16:39:28.834: E/AndroidRuntime(25260): android.os.NetworkOnMainThreadException
10-27 16:39:28.834: E/AndroidRuntime(25260): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1119)
10-27 16:39:28.834: E/AndroidRuntime(25260): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
10-27 16:39:28.834: E/AndroidRuntime(25260): at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
10-27 16:39:28.834: E/AndroidRuntime(25260): at libcore.io.IoBridge.connect(IoBridge.java:112)
10-27 16:39:28.834: E/AndroidRuntime(25260): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
10-27 16:39:28.834: E/AndroidRuntime(25260): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
10-27 16:39:28.834: E/AndroidRuntime(25260): at java.net.Socket.connect(Socket.java:842)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
10-27 16:39:28.834: E/AndroidRuntime(25260): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
10-27 16:39:28.834: E/AndroidRuntime(25260): at com.example.businesslookup.JSONParser.makeHttpRequest(JSONParser.java:65)
10-27 16:39:28.834: E/AndroidRuntime(25260): at com.example.businesslookup.BusinessDetails$GetBusinessDetails$1.run(BusinessDetails.java:127)
10-27 16:39:28.834: E/AndroidRuntime(25260): at android.os.Handler.handleCallback(Handler.java:605)
10-27 16:39:28.834: E/AndroidRuntime(25260): at android.os.Handler.dispatchMessage(Handler.java:92)
10-27 16:39:28.834: E/AndroidRuntime(25260): at android.os.Looper.loop(Looper.java:137)
10-27 16:39:28.834: E/AndroidRuntime(25260): at android.app.ActivityThread.main(ActivityThread.java:4697)
10-27 16:39:28.834: E/AndroidRuntime(25260): at java.lang.reflect.Method.invokeNative(Native Method)
10-27 16:39:28.834: E/AndroidRuntime(25260): at java.lang.reflect.Method.invoke(Method.java:511)
10-27 16:39:28.834: E/AndroidRuntime(25260): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
10-27 16:39:28.834: E/AndroidRuntime(25260): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
10-27 16:39:28.834: E/AndroidRuntime(25260): at dalvik.system.NativeStart.main(Native Method)
And this is the ASYNC task that handles the networking:
class GetBusinessDetails extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(BusinessDetails.this);
pDialog.setMessage("Loading details. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
protected String doInBackground(String... params) {
runOnUiThread(new Runnable() {
public void run() {
int success;
try {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("bid", bid));
JSONObject json = jsonParser.makeHttpRequest(
url_business_detials, "GET", params);
Log.d("Single Business Details", json.toString());
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
JSONArray businessObj = json.getJSONArray(TAG_BUSINESS); // JSON Array
JSONObject business = businessObj.getJSONObject(0);
TextView _bName = (TextView) findViewById(R.id.bnameInf);
TextView _phone = (TextView) findViewById(R.id.phoneInf);
TextView _address = (TextView) findViewById(R.id.addressInf);
TextView _city = (TextView) findViewById(R.id.cityInf);
TextView _state = (TextView) findViewById(R.id.stateInf);
TextView _zip = (TextView) findViewById(R.id.zipInf);
_bName.setText(business.getString(TAG_NAME));
_phone.setText(business.getString(TAG_PHONE));
_address.setText(business.getString(TAG_ADDRESS));
_city.setText(business.getString(TAG_CITY));
_state.setText(business.getString(TAG_STATE));
_zip.setText(business.getString(TAG_ZIP));
}else{
Toast.makeText(getApplicationContext(), "No Match Returned", Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
});
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once got all details
pDialog.dismiss();
}
}

Without a stacktrace i would bet my money on 2 things:
in onCreate the Activity is still starting up and you already create a Toast
visual stuff is often better off with an Activity Context instead of the Appcontext
anyway, stacktrace would be nice
com.example.businesslookup.BusinessDetails$GetBusinessDetails$1.run(BusinessDetails.java:127)
in this line, there is your problem
also please read:
http://developer.android.com/reference/android/os/NetworkOnMainThreadException.html

You are using an AsyncTask, but you're also wrapping your code in a call to runOnUiThread() which defeats the purpose of using an AsyncTask. Try removing this wrapper and moving the UI access to onPostExecute():
protected String doInBackground(String... params) {
int success;
try {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("bid", bid));
JSONObject json = jsonParser.makeHttpRequest(
url_business_detials, "GET", params);
Log.d("Single Business Details", json.toString());
success = json.getInt(TAG_SUCCESS);
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String result) {
if (success == 1) {
JSONArray businessObj = json.getJSONArray(TAG_BUSINESS); // JSON Array
JSONObject business = businessObj.getJSONObject(0);
TextView _bName = (TextView) findViewById(R.id.bnameInf);
TextView _phone = (TextView) findViewById(R.id.phoneInf);
TextView _address = (TextView) findViewById(R.id.addressInf);
TextView _city = (TextView) findViewById(R.id.cityInf);
TextView _state = (TextView) findViewById(R.id.stateInf);
TextView _zip = (TextView) findViewById(R.id.zipInf);
_bName.setText(business.getString(TAG_NAME));
_phone.setText(business.getString(TAG_PHONE));
_address.setText(business.getString(TAG_ADDRESS));
_city.setText(business.getString(TAG_CITY));
_state.setText(business.getString(TAG_STATE));
_zip.setText(business.getString(TAG_ZIP));
}else{
Toast.makeText(getApplicationContext(), "No Match Returned", Toast.LENGTH_LONG).show();
}
}
(I don't know if exact this code will compile, but it's enough to give you the right idea.)