I'm hoping you can all help me out here.
Basically I have been having a few problems with my app. My previous questions on Stack have now all been solved so thanks to everyone who helped me out.
I am now getting a NPE but no idea why.
Basically my code is:
Connecting to a device (IP address from an intent and fixed port of 32)
Once connected send the command "root/r/n" twice. (This is the login for the device not the actual connection, the connection is not protected.
Once there is return of "SNX_COM>" or "SCX_COM>" await commands.
I then want to be able to send them commands from a button click.
The problem I have is that I cannot get the initial connection active. It would be grateful if someone could help me.
Java class:
package com.smarte.smartipcontrol;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
public class IPControl extends Activity {
private Socket socket;
private static final int REDIRECTED_SERVERPORT = 32;
public PrintWriter out;
public BufferedReader in;
public String data;
public Object pd;
//get the message from intent
Intent intent = getIntent();
String actu_ip = intent.getStringExtra(IPEntry.ACTUALSMARTIP);
public void getModel(View view) {
try {
out.println("[m\r\n");
//System.out.print("root\r\n");
while(!in.ready());
String textStatus = readBuffer();
} catch(IOException e) {
e.printStackTrace();
}
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.act_ipcontrol);
try {
new AsyncAction().execute();
} catch(Exception e) {
e.printStackTrace();
}
}
private class AsyncAction extends AsyncTask<String, Void, String> {
protected String doInBackground(String... args) {
try {
InetAddress serverAddr = InetAddress.getByName(actu_ip);
socket = new Socket(serverAddr, REDIRECTED_SERVERPORT);
OutputStreamWriter osw = new OutputStreamWriter(socket.getOutputStream());
BufferedWriter bw = new BufferedWriter(osw);
out = new PrintWriter(bw, true);
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
while (! in .ready());
readBuffer();
out.println("root\r\n");
while (! in .ready());
readBuffer();
out.println("root\r\n");
while (! in .ready());
String msg = "";
while ( in .ready()) {
msg = msg + (char) in .read();
}
out.println("[c,l#,i5,o*\r\n");
while (! in .ready());
readBuffer();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;//returns what you want to pass to the onPostExecute()
}
protected void onPostExecute(String result) {
//results the data returned from doInbackground
IPControl.this.data = result;
}
}
private String readBuffer() throws IOException {
String msg = "";
while(in.ready()) {
msg = msg + (char)in.read();
}
//System.out.print(msg);
if(msg.indexOf("SNX_COM> ") != -1) return msg.substring(0, msg.indexOf("SNX_COM> "));
else if(msg.indexOf("SCX_COM> ") != -1) return msg.substring(0, msg.indexOf("SCX_COM> "));
else return msg;
}
}
LogCat:
12-07 09:29:24.596: E/AndroidRuntime(772): FATAL EXCEPTION: main
12-07 09:29:24.596: E/AndroidRuntime(772): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.smarte.smartipcontrol/com.smarte.smartipcontrol.IPControl}: java.lang.NullPointerException
12-07 09:29:24.596: E/AndroidRuntime(772): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2106)
12-07 09:29:24.596: E/AndroidRuntime(772): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
12-07 09:29:24.596: E/AndroidRuntime(772): at android.app.ActivityThread.access$600(ActivityThread.java:141)
12-07 09:29:24.596: E/AndroidRuntime(772): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
12-07 09:29:24.596: E/AndroidRuntime(772): at android.os.Handler.dispatchMessage(Handler.java:99)
12-07 09:29:24.596: E/AndroidRuntime(772): at android.os.Looper.loop(Looper.java:137)
12-07 09:29:24.596: E/AndroidRuntime(772): at android.app.ActivityThread.main(ActivityThread.java:5039)
12-07 09:29:24.596: E/AndroidRuntime(772): at java.lang.reflect.Method.invokeNative(Native Method)
12-07 09:29:24.596: E/AndroidRuntime(772): at java.lang.reflect.Method.invoke(Method.java:511)
12-07 09:29:24.596: E/AndroidRuntime(772): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
12-07 09:29:24.596: E/AndroidRuntime(772): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
12-07 09:29:24.596: E/AndroidRuntime(772): at dalvik.system.NativeStart.main(Native Method)
12-07 09:29:24.596: E/AndroidRuntime(772): Caused by: java.lang.NullPointerException
12-07 09:29:24.596: E/AndroidRuntime(772): at com.smarte.smartipcontrol.IPControl.<init>(IPControl.java:29)
12-07 09:29:24.596: E/AndroidRuntime(772): at java.lang.Class.newInstanceImpl(Native Method)
12-07 09:29:24.596: E/AndroidRuntime(772): at java.lang.Class.newInstance(Class.java:1319)
12-07 09:29:24.596: E/AndroidRuntime(772): at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
12-07 09:29:24.596: E/AndroidRuntime(772): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2097)
12-07 09:29:24.596: E/AndroidRuntime(772): ... 11 more
Thanks in advanced.
The problem that prevents your app to start is in these two lines:
Intent intent = getIntent();
String actu_ip = intent.getStringExtra(IPEntry.ACTUALSMARTIP);
I can't use getIntent() in the initialization, you should move it to the onCreate():
Intent intent;
String actu_ip;
#Override
public void onCreate(Bundle savedInstanceState) {
....
Intent intent = getIntent();
String actu_ip = intent.getStringExtra(IPEntry.ACTUALSMARTIP);
....
}
Regards.
Related
I used Android native Sip api to initialize Sip client.Because I am confused to Sip protocol,I read the android developer document about sip and follow it.When I run my application on Nexus5,it work normally,but when I run it on other device like coolpad, it throw NullPointException from SipManager.The following is my code.For some reason,the username,passwd and domain is private.
public static SipManager manager;
public static SipProfile me;
public static String username;
public static String passwd;
public static void initializeSip(Context context) {
System.out.println("initializeSip");
if (manager == null) {
manager = SipManager.newInstance(context);
}
if (me != null) {
closeLocalProfile();
}
username = SharedPreferences.getLoginInfo().getModel().getVos_phone();
passwd = SharedPreferences.getLoginInfo().getModel().getVos_phone_pwd();
try {
if (!(SipManager.isApiSupported(context) && SipManager.isVoipSupported(context))) {
System.out.println("cannot support");
return;
}
System.out.println("isApiSupported="+SipManager.isApiSupported(context));
System.out.println("SipManager="+SipManager.newInstance(context));
SipProfile.Builder builder = new SipProfile.Builder(username, domain);
builder.setPassword(passwd);
me = builder.build();
manager.open(me);
SipRegistrationListener listener = new SipRegistrationListener() {
#Override
public void onRegistering(String localProfileUri) {
System.out.println("Registering with SIP Server");
}
#Override
public void onRegistrationDone(String localProfileUri, long expiryTime) {
System.out.println("Register success");
}
#Override
public void onRegistrationFailed(String localProfileUri, int errorCode, String errorMessage) {
System.out.println("Registeration failed.Please check Settings.");
System.out.println("errorCode="+errorCode);
System.out.println("errorMessage="+errorMessage);
}
};
manager.setRegistrationListener(me.getUriString(),listener);
manager.register(me,3000,listener);
} catch (ParseException e) {
e.printStackTrace();
} catch (SipException e) {
e.printStackTrace();
}
}
The following is my logcat. Most strangely,I find that the api isApiSupported return true and the SipManager object is not null.I cannot find the reason about it.
1.741 30654-30654/com.dev.goldunion I/System.out: initializeSip
05-18 20:11:41.741 30654-30654/com.dev.goldunion I/System.out: isApiSupported=true
05-18 20:11:41.751 30654-30654/com.dev.goldunion I/System.out: SipManager=android.net.sip.SipManager#426af938
05-18 20:11:41.751 30654-30654/com.dev.goldunion D/AndroidRuntime: Shutting down VM
05-18 20:11:41.751 30654-30654/com.dev.goldunion W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x41692970)
05-18 20:11:41.751 30654-30654/com.dev.goldunion E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dev.goldunion/com.dev.goldunion.activity.MainActivity}: java.lang.NullPointerException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2227)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2282)
at android.app.ActivityThread.access$600(ActivityThread.java:147)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5265)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:760)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.NullPointerException
at android.net.sip.SipManager.open(SipManager.java:180)
at com.dev.goldunion.util.RegisterSipAccountUtils.initializeSip(RegisterSipAccountUtils.java:49)
at com.dev.goldunion.activity.MainActivity.onCreate(MainActivity.java:77)
at android.app.Activity.performCreate(Activity.java:5146)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2191)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2282)
at android.app.ActivityThread.access$600(ActivityThread.java:147)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1272)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5265)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:760)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
at dalvik.system.NativeStart.main(Native Method)
I have a problem connected with reading a file in Java Application. Please help me as I'm trying to do it for four days and my CS teacher is not into Android Apps. Also any of the tutorials read does not help me.
I have a following app:
package com.bachosz.billionaires;
import android.support.v7.app.ActionBarActivity;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.StringTokenizer;
import android.content.ContextWrapper;
import android.content.res.AssetFileDescriptor;
import android.content.res.AssetManager;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivityBillionaires extends ActionBarActivity {
private int currentQuestion;
private String [] answers;
private Button answerButton;
private Button questionButton;
private TextView questionView;
private TextView answerView;
private EditText answerText;
private Question [] questions;
private Button buttonA;
private Button buttonB;
private Button buttonC;
private Button buttonD;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_activity_billionaires);
try {
init();
} catch (IOException e) {
e.printStackTrace();
}
}
public void init() throws IOException
{
questions = new Question[2];
currentQuestion = 0;
InputStream inputStream = getResources().openRawResource(R.raw.questionstable);
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line = null;
String content,a,b,c,d,correct;
int id, x = 0;
StringTokenizer st = null;
while ((line=reader.readLine()) != null)
{
st= new StringTokenizer(line, ",");
id = Integer.parseInt(st.nextToken());
content = st.nextToken();
a = st.nextToken();
b = st.nextToken();
c = st.nextToken();
d = st.nextToken();
correct = st.nextToken();
questions[x] = new Question(id, content, a, b, c, d, correct);
x++;
}
reader.close();
answerButton = (Button)findViewById(R.id.AnswerButton);
questionButton = (Button)findViewById(R.id.QuestionButton);
questionView = (TextView)findViewById(R.id.QuestionTextView);
answerView = (TextView) findViewById(R.id.AnswerTextView);
answerText = (EditText) findViewById(R.id.AnswerText);
buttonA = (Button)findViewById(R.id.buttonA);
buttonB = (Button)findViewById(R.id.buttonB);
buttonC = (Button)findViewById(R.id.buttonC);
buttonD = (Button)findViewById(R.id.buttonD);
answerButton.setOnClickListener(new OnClickListener()
{
public void onClick(View v) {
checkAnswer();
}});
questionButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
showQuestion();
}});
}
public void showQuestion()
{
// if(currentQuestion == questions.length)
// currentQuestion =0;
questionView.setText(questions[0].toString());
answerView.setText("");
answerText.setText("");
currentQuestion++;
}
public boolean isCorrect(String answer)
{
return (answer.equalsIgnoreCase(questions[currentQuestion].getCorrect()));
}
public void checkRight()
{
// String right
}
public void checkAnswer()
{
String answer = questions[currentQuestion].getCorrect();
if(isCorrect(answer))
answerView.setText("You're right!");
else
answerView.setText("Sorry, the correct answer is "+answers[currentQuestion]);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main_activity_billionaires, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
It is taken from Java application I was writing previously (that is why so many comments). How I can access the fileName in Android App? I was trying InputStream, get Assets, etc. but It does not work or I am doing it improperly. Currently it is throwing NullPointerException.
LOG CAT:
10-09 13:38:37.663: E/Trace(921): error opening trace file: No such file or directory (2)
10-09 13:38:39.354: D/AndroidRuntime(921): Shutting down VM
10-09 13:38:39.354: W/dalvikvm(921): threadid=1: thread exiting with uncaught exception (group=0x40a13300)
10-09 13:38:39.384: E/AndroidRuntime(921): FATAL EXCEPTION: main
10-09 13:38:39.384: E/AndroidRuntime(921): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.bachosz.billionaires/com.bachosz.billionaires.MainActivityBillionaires}: java.lang.NullPointerException
10-09 13:38:39.384: E/AndroidRuntime(921): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
10-09 13:38:39.384: E/AndroidRuntime(921): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
10-09 13:38:39.384: E/AndroidRuntime(921): at android.app.ActivityThread.access$600(ActivityThread.java:130)
10-09 13:38:39.384: E/AndroidRuntime(921): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
10-09 13:38:39.384: E/AndroidRuntime(921): at android.os.Handler.dispatchMessage(Handler.java:99)
10-09 13:38:39.384: E/AndroidRuntime(921): at android.os.Looper.loop(Looper.java:137)
10-09 13:38:39.384: E/AndroidRuntime(921): at android.app.ActivityThread.main(ActivityThread.java:4745)
10-09 13:38:39.384: E/AndroidRuntime(921): at java.lang.reflect.Method.invokeNative(Native Method)
10-09 13:38:39.384: E/AndroidRuntime(921): at java.lang.reflect.Method.invoke(Method.java:511)
10-09 13:38:39.384: E/AndroidRuntime(921): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
10-09 13:38:39.384: E/AndroidRuntime(921): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-09 13:38:39.384: E/AndroidRuntime(921): at dalvik.system.NativeStart.main(Native Method)
10-09 13:38:39.384: E/AndroidRuntime(921): Caused by: java.lang.NullPointerException
10-09 13:38:39.384: E/AndroidRuntime(921): at com.bachosz.billionaires.MainActivityBillionaires.readFile(MainActivityBillionaires.java:111)
10-09 13:38:39.384: E/AndroidRuntime(921): at com.bachosz.billionaires.MainActivityBillionaires.init(MainActivityBillionaires.java:140)
10-09 13:38:39.384: E/AndroidRuntime(921): at com.bachosz.billionaires.MainActivityBillionaires.onCreate(MainActivityBillionaires.java:70)
10-09 13:38:39.384: E/AndroidRuntime(921): at android.app.Activity.performCreate(Activity.java:5008)
10-09 13:38:39.384: E/AndroidRuntime(921): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
10-09 13:38:39.384: E/AndroidRuntime(921): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
10-09 13:38:39.384: E/AndroidRuntime(921): ... 11 more
The error says you're getting a NPE (Null Pointer Exception) at com.bachosz.billionaires.MainActivityBillionaires. You need to look at the code section that you use to call that activity. (it is not in your code above - or else we don't know which line with the given information)
Another thing you have to make sure is that you have the appropriate context.
AssetManager assetManage = appContext.getAssets();
String[] filelist = assetManage.list("");
First you should clean up your code, at least to show it here where we don't know what are you doing.
It's easier to understand.
Why are you using assets? In Android the most common way to access resources is the .../res/raw folder.
It makes a reference of the file in the autogenerated R.class so you can access it anywhere.
Make sure your filename is lowercase and has no spaces. If you haven't raw folder under res, create it manually.
Try this:
InputStream inputStream = getResources().openRawResource(R.raw.YOURFILE);
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line = reader.readLine();
while (line != null)
{
// Read file.
}
Firstly: copy YOURFILE to assets folder.
Then, AssetManager assetManage = getAssets();
Then,
InputStream myInput = null;
try {
myInput = assetManager.open("YOURFILE");
} catch (IOException e1) {
e1.printStackTrace();
}
And finally BufferedReader reader = new BufferedReader(new InputStreamReader(myInput));
follow the above code step by step.
I have tried to learn to write an application which is basically a bluetooth messenger. Things had been fine unless I tried to install and run it. It gets installed successfully but crashes down at start up itself. Can you please tell me what is wrong ?
This is the code for the main activity. There are three more activities apart from this.
import java.io.IOException;
import java.util.ArrayList;
import android.app.ListActivity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends ListActivity {
public final static String UUID = "3606f360-e4df-11e0-9572-0800200c9a66";
BluetoothAdapter bluetoothAdapter;
BroadcastReceiver discoverDevicesReceiver;
BroadcastReceiver discoveryFinishedReceiver;
//---store all the discovered devices---
ArrayList<BluetoothDevice> discoveredDevices;
ArrayList<String> discoveredDevicesNames;
//---store all the paired devices---
ArrayList<BluetoothDevice> pairedDevices;
static TextView txtData;
EditText txtMessage;
//---thread for running the server socket---
ServerThread serverThread;
//---thread for connecting to the client socket---
ConnectToServerThread connectToServerThread;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//---init the ArrayList objects and bluetooth adapter---
discoveredDevices = new ArrayList<BluetoothDevice>();
discoveredDevicesNames = new ArrayList<String>();
pairedDevices = new ArrayList<BluetoothDevice>();
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
//---for displaying the messages received---
txtData = (TextView) findViewById(R.id.txtData);
txtMessage = (EditText) findViewById(R.id.txtMessage);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
//---make yourself discoverable---
public void MakeDiscoverable(View view)
{
Intent i = new Intent(
BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
i.putExtra(
BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
startActivity(i);
}
/*
//---find all the previously paired devices---
private void QueryPairedDevices(){
Set<BluetoothDevice> allPairedDevices =
bluetoothAdapter.getBondedDevices();
//---if there are paired devices---
if (allPairedDevices.size() > 0) {
//---loop through paired devices---
for (BluetoothDevice device : allPairedDevices) {
//---add the name and address to an array adapter
// to show in a ListView---
Log.d("UsingBluetooth", device.getName() + "\n" +
device.getAddress());
pairedDevices.add(device);
}
}
}
*/
//---used to discover other bluetooth devices---
private void DiscoveringDevices() {
if (discoverDevicesReceiver == null) {
discoverDevicesReceiver = new BroadcastReceiver() {
//---fired when a new device is discovered---
#Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
//---a device is discovered---
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
//---get the BluetoothDevice object from
// the Intent---
BluetoothDevice device =
intent.getParcelableExtra(
BluetoothDevice.EXTRA_DEVICE);
//---add the name and address to an array
// adapter to show in a ListView---
//---only add if the device is not already
// in the list---
if (!discoveredDevices.contains(device)) {
//---add the device---
discoveredDevices.add(device);
//---add the name of the device; used for
// ListView---
discoveredDevicesNames.add(device.getName());
//---display the items in the ListView---
setListAdapter(new
ArrayAdapter<String>(getBaseContext(),
android.R.layout.simple_list_item_1,
discoveredDevicesNames));
}
}
}
};
}
if (discoveryFinishedReceiver==null) {
discoveryFinishedReceiver = new BroadcastReceiver() {
//---fired when the discovery is done---
#Override
public void onReceive(Context context, Intent intent) {
//---enable the listview when discovery is over; about 12 seconds---
getListView().setEnabled(true);
Toast.makeText(getBaseContext(),
"Discovery completed. Select a device to start chatting.",
Toast.LENGTH_LONG).show();
unregisterReceiver(discoveryFinishedReceiver);
}
};
}
//---register the broadcast receivers---
IntentFilter filter1 = new
IntentFilter(BluetoothDevice.ACTION_FOUND);
IntentFilter filter2 = new
IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
registerReceiver(discoverDevicesReceiver, filter1);
registerReceiver(discoveryFinishedReceiver, filter2);
//---disable the listview when discover is in progress---
getListView().setEnabled(false);
Toast.makeText(getBaseContext(),
"Discovery in progress...please wait...",
Toast.LENGTH_LONG).show();
bluetoothAdapter.startDiscovery();
}
//---discover other bluetooth devices---
public void DiscoverDevices(View view)
{
//---query for all paired devices---
//QueryPairedDevices();
//---discover other devices---
DiscoveringDevices();
}
#Override
public void onPause() {
super.onPause();
//---cancel discovery of other bluetooth devices
bluetoothAdapter.cancelDiscovery();
//---unregister the broadcast receiver for
// discovering devices---
if (discoverDevicesReceiver != null) {
try {
unregisterReceiver(discoverDevicesReceiver);
} catch(Exception e) {
}
}
//---if you are currently connected to someone...---
if (connectToServerThread!=null) {
try {
//---close the connection---
connectToServerThread.bluetoothSocket.close();
} catch (IOException e) {
Log.d("MainActivity", e.getLocalizedMessage());
}
}
//---stop the thread running---
if (serverThread!=null) serverThread.cancel();
}
//---used for updating the UI on the main activity---
static Handler UIupdater = new Handler() {
#Override
public void handleMessage(Message msg) {
int numOfBytesReceived = msg.arg1;
byte[] buffer = (byte[]) msg.obj;
//---convert the entire byte array to string---
String strReceived = new String(buffer);
//---extract only the actual string received---
strReceived = strReceived.substring(
0, numOfBytesReceived);
//---display the text received on the TextView---
txtData.setText(txtData.getText().toString() +
strReceived);
}
};
#Override
public void onResume() {
super.onResume();
//---start the socket server---
serverThread = new ServerThread(bluetoothAdapter);
serverThread.start();
}
//---when a client is tapped in the ListView---
public void onListItemClick(ListView parent, View v,
int position, long id) {
//---if you are already talking to someone...---
if (connectToServerThread!=null) {
try {
//---close the connection first---
connectToServerThread.bluetoothSocket.close();
} catch (IOException e) {
Log.d("MainActivity", e.getLocalizedMessage());
}
}
//---connect to the selected Bluetooth device---
BluetoothDevice deviceSelected =
discoveredDevices.get(position);
connectToServerThread = new
ConnectToServerThread(deviceSelected, bluetoothAdapter);
connectToServerThread.start();
//---tell the user that he is connected to who---
Toast.makeText(this, "You have connected to " +
discoveredDevices.get(position).getName(),
Toast.LENGTH_SHORT).show();
}
private class WriteTask extends AsyncTask<String, Void, Void> {
protected Void doInBackground(String... args) {
try {
connectToServerThread.commsThread.write(args[0]);
} catch (Exception e) {
Log.d("MainActivity", e.getLocalizedMessage());
}
return null;
}
}
//---send a message to the connected socket client---
public void SendMessage(View view)
{
if (connectToServerThread!=null) {
///=========
//connectToServerThread.commsThread.write(
// txtMessage.getText().toString());
new WriteTask().execute(txtMessage.getText().toString());
///=========
} else {
Toast.makeText(this, "Select a client first",
Toast.LENGTH_SHORT).show();
}
}
}
ServerThread class :
import java.io.IOException;
import java.util.UUID;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothServerSocket;
import android.bluetooth.BluetoothSocket;
import android.util.Log;
public class ServerThread extends Thread {
//---the server socket---
private final BluetoothServerSocket bluetoothServerSocket;
public ServerThread(BluetoothAdapter bluetoothAdapter) {
BluetoothServerSocket tmp = null;
try {
//---UUID must be the same for both the client and
// the server---
tmp =
bluetoothAdapter.listenUsingRfcommWithServiceRecord(
"BluetoothApp", UUID.fromString(MainActivity.UUID));
} catch (IOException e) {
Log.d("ServerThread", e.getLocalizedMessage());
}
bluetoothServerSocket = tmp;
}
public void run() {
BluetoothSocket socket = null;
//---keep listening until exception occurs
// or a socket is returned---
while (true) {
try {
socket = bluetoothServerSocket.accept();
} catch (IOException e) {
Log.d("ServerThread", e.getLocalizedMessage());
break;
}
//---if a connection was accepted---
if (socket != null) {
//---create a separate thread to listen for
// incoming data---
CommsThread commsThread = new CommsThread(socket);
commsThread.run();
}
}
}
public void cancel() {
try {
bluetoothServerSocket.close();
} catch (IOException e) {
Log.d("ServerThread", e.getLocalizedMessage());
}
}
}
LogCat
04-13 18:25:06.684: D/AndroidRuntime(397): Shutting down VM
04-13 18:25:06.684: W/dalvikvm(397): threadid=1: thread exiting with uncaught exception (group=0x40015560)
04-13 18:25:06.704: E/AndroidRuntime(397): FATAL EXCEPTION: main
04-13 18:25:06.704: E/AndroidRuntime(397): java.lang.RuntimeException: Unable to resume activity {net.learn2develop.usingbluetooth/net.learn2develop.usingbluetooth.MainActivity}: java.lang.NullPointerException
04-13 18:25:06.704: E/AndroidRuntime(397): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2120)
04-13 18:25:06.704: E/AndroidRuntime(397): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2135)
04-13 18:25:06.704: E/AndroidRuntime(397): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1668)
04-13 18:25:06.704: E/AndroidRuntime(397): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-13 18:25:06.704: E/AndroidRuntime(397): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
04-13 18:25:06.704: E/AndroidRuntime(397): at android.os.Handler.dispatchMessage(Handler.java:99)
04-13 18:25:06.704: E/AndroidRuntime(397): at android.os.Looper.loop(Looper.java:123)
04-13 18:25:06.704: E/AndroidRuntime(397): at android.app.ActivityThread.main(ActivityThread.java:3683)
04-13 18:25:06.704: E/AndroidRuntime(397): at java.lang.reflect.Method.invokeNative(Native Method)
04-13 18:25:06.704: E/AndroidRuntime(397): at java.lang.reflect.Method.invoke(Method.java:507)
04-13 18:25:06.704: E/AndroidRuntime(397): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-13 18:25:06.704: E/AndroidRuntime(397): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-13 18:25:06.704: E/AndroidRuntime(397): at dalvik.system.NativeStart.main(Native Method)
04-13 18:25:06.704: E/AndroidRuntime(397): Caused by: java.lang.NullPointerException
04-13 18:25:06.704: E/AndroidRuntime(397): at net.learn2develop.usingbluetooth.ServerThread.<init>(ServerThread.java:21)
04-13 18:25:06.704: E/AndroidRuntime(397): at net.learn2develop.usingbluetooth.MainActivity.onResume(MainActivity.java:235)
04-13 18:25:06.704: E/AndroidRuntime(397): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1150)
04-13 18:25:06.704: E/AndroidRuntime(397): at android.app.Activity.performResume(Activity.java:3832)
04-13 18:25:06.704: E/AndroidRuntime(397): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2110)
04-13 18:25:06.704: E/AndroidRuntime(397): ... 12 more
04-13 18:25:08.764: I/Process(397): Sending signal. PID: 397 SIG: 9
04-13 18:25:10.354: D/AndroidRuntime(415): Shutting down VM
04-13 18:25:10.354: W/dalvikvm(415): threadid=1: thread exiting with uncaught exception (group=0x40015560)
04-13 18:25:10.364: E/AndroidRuntime(415): FATAL EXCEPTION: main
04-13 18:25:10.364: E/AndroidRuntime(415): java.lang.RuntimeException: Unable to resume activity {net.learn2develop.usingbluetooth/net.learn2develop.usingbluetooth.MainActivity}: java.lang.NullPointerException
04-13 18:25:10.364: E/AndroidRuntime(415): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2120)
04-13 18:25:10.364: E/AndroidRuntime(415): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2135)
04-13 18:25:10.364: E/AndroidRuntime(415): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1668)
04-13 18:25:10.364: E/AndroidRuntime(415): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-13 18:25:10.364: E/AndroidRuntime(415): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
04-13 18:25:10.364: E/AndroidRuntime(415): at android.os.Handler.dispatchMessage(Handler.java:99)
04-13 18:25:10.364: E/AndroidRuntime(415): at android.os.Looper.loop(Looper.java:123)
04-13 18:25:10.364: E/AndroidRuntime(415): at android.app.ActivityThread.main(ActivityThread.java:3683)
04-13 18:25:10.364: E/AndroidRuntime(415): at java.lang.reflect.Method.invokeNative(Native Method)
04-13 18:25:10.364: E/AndroidRuntime(415): at java.lang.reflect.Method.invoke(Method.java:507)
04-13 18:25:10.364: E/AndroidRuntime(415): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-13 18:25:10.364: E/AndroidRuntime(415): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-13 18:25:10.364: E/AndroidRuntime(415): at dalvik.system.NativeStart.main(Native Method)
04-13 18:25:10.364: E/AndroidRuntime(415): Caused by: java.lang.NullPointerException
04-13 18:25:10.364: E/AndroidRuntime(415): at net.learn2develop.usingbluetooth.ServerThread.<init>(ServerThread.java:21)
04-13 18:25:10.364: E/AndroidRuntime(415): at net.learn2develop.usingbluetooth.MainActivity.onResume(MainActivity.java:235)
04-13 18:25:10.364: E/AndroidRuntime(415): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1150)
04-13 18:25:10.364: E/AndroidRuntime(415): at android.app.Activity.performResume(Activity.java:3832)
04-13 18:25:10.364: E/AndroidRuntime(415): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2110)
04-13 18:25:10.364: E/AndroidRuntime(415): ... 12 more
04-13 18:25:13.304: I/Process(415): Sending signal. PID: 415 SIG: 9
Possible changes you can try which might help you.
In ServerThread.java
public void run() {
....
while(!Thread.currentThread().isInterrupted()){
//do something
}
}
If this works fine, otherwise try:
In MainActivity.java
#Override
public void onCreate() {
....
//Start your thread here
//---start the socket server---
serverThread = new ServerThread(bluetoothAdapter);
serverThread.start();
}
#Override
public void onResume() {
super.onResume();
//handle your thread here - the following maynot be helpful, but logiaclly speaking, //you must handle your threads here
if(serverThread.isAlive())
serverThread.resume();
else
serverThread.interrupt();
}
I try to send a string from the java desktop program to android using socket connection. When the user click a button in the android application it will displays the message from the java app. When i click the Button it displays java.lang.IllegalStateException.I can found many questions like this in this site but noone dont match my requirement.
Android Code
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.View;
public class MainActivity extends Activity
{
private Socket client;
private InputStreamReader isr;
private BufferedReader bf;
private String message;
private AsyncClass ac;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
class AsyncClass extends AsyncTask<Void, Void,Void>
{
protected Void doInBackground(Void... params)
{
hardtask();
return null;
}
public void hardtask()
{
try
{
client=new Socket("10.0.2.2",7777);
isr=new InputStreamReader(client.getInputStream());
bf=new BufferedReader(isr);
message=bf.readLine();
Log.v("Message", message);
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void onClick(View view)
{
ac.execute();
}
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Logcat
02-27 02:02:02.191: D/gralloc_goldfish(1445): Emulator without GPU emulation detected.
02-27 02:02:05.541: D/AndroidRuntime(1445): Shutting down VM
02-27 02:02:05.651: W/dalvikvm(1445): threadid=1: thread exiting with uncaught exception (group=0xb1a7eb90)
02-27 02:02:05.711: E/AndroidRuntime(1445): FATAL EXCEPTION: main
02-27 02:02:05.711: E/AndroidRuntime(1445): Process: andro.androreply, PID: 1445
02-27 02:02:05.711: E/AndroidRuntime(1445): java.lang.IllegalStateException: Could not execute method of the activity
02-27 02:02:05.711: E/AndroidRuntime(1445): at android.view.View$1.onClick(View.java:3814)
02-27 02:02:05.711: E/AndroidRuntime(1445): at android.view.View.performClick(View.java:4424)
02-27 02:02:05.711: E/AndroidRuntime(1445): at android.view.View$PerformClick.run(View.java:18383)
02-27 02:02:05.711: E/AndroidRuntime(1445): at android.os.Handler.handleCallback(Handler.java:733)
02-27 02:02:05.711: E/AndroidRuntime(1445): at android.os.Handler.dispatchMessage(Handler.java:95)
02-27 02:02:05.711: E/AndroidRuntime(1445): at android.os.Looper.loop(Looper.java:137)
02-27 02:02:05.711: E/AndroidRuntime(1445): at android.app.ActivityThread.main(ActivityThread.java:4998)
02-27 02:02:05.711: E/AndroidRuntime(1445): at java.lang.reflect.Method.invokeNative(Native Method)
02-27 02:02:05.711: E/AndroidRuntime(1445): at java.lang.reflect.Method.invoke(Method.java:515)
02-27 02:02:05.711: E/AndroidRuntime(1445): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
02-27 02:02:05.711: E/AndroidRuntime(1445): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
02-27 02:02:05.711: E/AndroidRuntime(1445): at dalvik.system.NativeStart.main(Native Method)
02-27 02:02:05.711: E/AndroidRuntime(1445): Caused by: java.lang.reflect.InvocationTargetException
02-27 02:02:05.711: E/AndroidRuntime(1445): at java.lang.reflect.Method.invokeNative(Native Method)
02-27 02:02:05.711: E/AndroidRuntime(1445): at java.lang.reflect.Method.invoke(Method.java:515)
02-27 02:02:05.711: E/AndroidRuntime(1445): at android.view.View$1.onClick(View.java:3809)
02-27 02:02:05.711: E/AndroidRuntime(1445): ... 11 more
02-27 02:02:05.711: E/AndroidRuntime(1445): Caused by: java.lang.NullPointerException
02-27 02:02:05.711: E/AndroidRuntime(1445): at andro.androreply.MainActivity.onClick(MainActivity.java:52)
02-27 02:02:05.711: E/AndroidRuntime(1445): ... 14 more
Java Code
import java.io.*;
import java.net.*;
public class Server
{
private static String msg="Hai";
private static Socket client;
private static PrintWriter pw;
private static ServerSocket socket;
public static void main(String args[])
{
try {
socket=new ServerSocket(7777);
client= socket.accept(); //Server socket
pw=new PrintWriter(client.getOutputStream(),true);
pw.write(msg);
pw.flush();
pw.close();
client.close();
}
catch (IOException e)
{
System.out.println("Could not listen on port: 7676");
}
}
}
Anyone can help me to resolve this. Thanks in advance...
You need to instantiate ac and then call execute(). execute() is method of AsyncTask.
ac = new AsyncClass();
I see you have
private AsyncClass ac;
And
public void onClick(View view)
{
ac.execute();
}
But you have not instantiated ac anywhere
You have a variable AsyncClass ac, but you're not actually initialising it. In your onClick(), instead of:
ac.execute();
do:
new AsyncClass.execute();
or initialise your ac variable in onCreate() first with:
ac = new AsyncClass();
I am currently having trouble connecting to my webservice on android. I am using a Jetty web service and building it using ANT. On my laptop it works perfectly and displays items from my database. However it won't seem to connect on my Android application. Attached is the code and LOGCAT report.
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import android.app.Activity;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.TextView;
public class Android2Servlet extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dbtest);
TextView txtresp = (TextView)findViewById(R.id.servlet_response);
String url = "http://(MY LAPTOPS IP):8085/DB";
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(url);
try{
System.out.println("About to execute");
HttpResponse response = client.execute(request);
String helpedResp=HttpUnpack.request(response);
System.out.println(helpedResp);
txtresp.setText(helpedResp);
System.out.println(response);
}catch(Exception ex){
txtresp.setText("Failed!");
ex.printStackTrace();
}
} }
The HTTP Unpack File
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.apache.http.HttpResponse;
public class HttpUnpack {
public static String request(HttpResponse response){
String result = "";
try{ InputStream in = response.getEntity().getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuilder str = new StringBuilder();
String line = null;
while((line = reader.readLine()) != null){
str.append(line + "\n");
}
in.close();
result = str.toString();
}catch(Exception ex){
result = "Error retrieving response";
}
return result;
}
}
The HTTP Unpack and the Android2Servlet do not cause any errors, however the text box only returns "Failed!".
LOGCAT file
W/System.err(1282): android.os.NetworkOnMainThreadException
W/System.err(1282): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099)
W/System.err(1282): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
W/System.err(1282): at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
W/System.err(1282): at libcore.io.IoBridge.connect(IoBridge.java:112)
W/System.err(1282): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
W/System.err(1282): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
W/System.err(1282): at java.net.Socket.connect(Socket.java:842)
W/System.err(1282): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
W/System.err(1282): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
W/System.err(1282): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
W/System.err(1282): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
W/System.err(1282): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
W/System.err(1282): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
W/System.err(1282): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
W/System.err(1282): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
W/System.err(1282): at myFood.myFood.Android2Servlet.onCreate(Android2Servlet.java:24)
W/System.err(1282): at android.app.Activity.performCreate(Activity.java:4465)
W/System.err(1282): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
W/System.err(1282): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
W/System.err(1282): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
W/System.err(1282): at android.app.ActivityThread.access$600(ActivityThread.java:123)
W/System.err(1282): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
W/System.err(1282): at android.os.Handler.dispatchMessage(Handler.java:99)
W/System.err(1282): at android.os.Looper.loop(Looper.java:137)
W/System.err(1282): at android.app.ActivityThread.main(ActivityThread.java:4424)
W/System.err(1282): at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err(1282): at java.lang.reflect.Method.invoke(Method.java:511)
W/System.err(1282): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
W/System.err(1282): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
W/System.err(1282): at dalvik.system.NativeStart.main(Native Method)
Any response would be greatly helpful.
Regards.
EDIT:
I have now removed the network access and put it in another Java class. And called it form another class. And it is still returning the same errors. Any other advice?
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
public class androidconnectors {
public static final String main(String args[]) throws Exception {
String txtresp = "";
try{
String url = "http://(LAPTOPS IP):8085/Hello";
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(url);
System.out.println("About to execute");
HttpResponse response = client.execute(request);
String helpedResp=HttpUnpack.request(response); // Http Unpack is not part of
System.out.println(helpedResp); // of HttpClient library
txtresp =(helpedResp);
System.out.println(response);
}catch(Exception ex){
ex.printStackTrace();
}
return txtresp;
}
}
And the android class.
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class Settings extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dbtest);
Button mybutton = (Button) findViewById(R.id.buttonpress);
mybutton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
TextView txtresp = (TextView)findViewById(R.id.servlet_response);
String[] args = null;
try {
String x = androidconnectors.main(args);
txtresp.setText(x);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
txtresp.setText("Failed");
}
}
});
}
}
It would seem, based on a quick google search, that since Honeycomb you are not supposed to execute network access on your app's main thread (to improve responsiveness).
Create another thread for network access as suggested here.
You can't do Network Operations on the UI Thread better use AsyncTask/Service/IntentService
NetworkOnMainThreadException
The exception that is thrown when an application attempts to perform a
networking operation on its main thread.(Since API 11)
To resovled StrictMode issue you need to use below code in your activity -
static{
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}