i have this code to create a CountdownTimer:
CountDownTimer CountdownTimer = new CountDownTimer(30000, 1000) {
public void onTick(long millisUntilFinished) {
txttime.setText(millisUntilFinished / 1000 );
}
public void onFinish(){
timeout_stage();
}
}.start();
it works fine and i can cancel and start it perfectly, but i want to restart it from another activity. in main form i cancell it, the an activity opens like a dialogbox that has a "AGAIN" button. when i click on that, i want to CountDownTimer.start(); called and my counter restarts again...
how i can do this?
i do this in second activity:
MainActivity main = new MainActivity();
main.CountdownTimer.start();
but i get this error:
04-28 11:42:40.495: E/AndroidRuntime(17039): FATAL EXCEPTION: main
04-28 11:42:40.495: E/AndroidRuntime(17039): java.lang.NullPointerException
04-28 11:42:40.495: E/AndroidRuntime(17039): at com.english.game.MainActivity$1.onTick(MainActivity.java:70)
04-28 11:42:40.495: E/AndroidRuntime(17039): at android.os.CountDownTimer$1.handleMessage(CountDownTimer.java:124)
04-28 11:42:40.495: E/AndroidRuntime(17039): at android.os.Handler.dispatchMessage(Handler.java:99)
04-28 11:42:40.495: E/AndroidRuntime(17039): at android.os.Looper.loop(Looper.java:137)
04-28 11:42:40.495: E/AndroidRuntime(17039): at android.app.ActivityThread.main(ActivityThread.java:5041)
04-28 11:42:40.495: E/AndroidRuntime(17039): at java.lang.reflect.Method.invokeNative(Native Method)
04-28 11:42:40.495: E/AndroidRuntime(17039): at java.lang.reflect.Method.invoke(Method.java:511)
04-28 11:42:40.495: E/AndroidRuntime(17039): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
04-28 11:42:40.495: E/AndroidRuntime(17039): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
04-28 11:42:40.495: E/AndroidRuntime(17039): at dalvik.system.NativeStart.main(Native Method)
I am not sure, because there is not enough code to do a proper analysis, but to me these lines look wrong:
MainActivity main = new MainActivity();
main.CountdownTimer.start();
When you initialize the main activity this way, no activity life cycle methods (onCreate(), onStart(), etc.) are called. My guess is, that the txttime (label?) is initialized in onCreate().
Additionally (and imho even worse), you would not restart the timer used in the actual main activity.
To ensure you have the correct main activity in your second activity I woud suggest you use the code from this answer.
You can create static handler in Activity1 and start your countDownTimer from there.
In second Activity you can access the static handler instance by Activity1.hander and you can send message from here to start or cancel the countDownTimer.
Don't create the instance of Activity1 by using new operator, instead this use Handler.
Activity1.java
public class Activity1 extends Activity {
public static Handler mHandler;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initHandler();
mHandler.sendEmptyMessage(1);
startActivity(new Intent(Activity1.this, Activity2.class));
}
private void initHandler(){
mHandler = new Handler(){
#Override
public void handleMessage(Message msg) {
switch (msg.arg1) {
case 1:
mCountDownTimer.start();
break;
}
}
};
}
private CountDownTimer mCountDownTimer = new CountDownTimer(10000, 1000) {
#Override
public void onTick(long millisUntilFinished) {
Toast.makeText(Activity1.this, "Count is: "+ millisUntilFinished/1000, Toast.LENGTH_SHORT).show();
}
#Override
public void onFinish() {
// TODO Auto-generated method stub
}
};
}
Activity2.java
public class Activity2 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Activity1.mHandler.sendEmptyMessage(1);
}
}
This sample code is only idea to do, please use this logic and let me know if any problem is coming...
Related
I have a activity and a login button. When I clicked the login Button then a progress bar will load for 10 seconds and after that the fragment will load. But I am getting an error.
Here is my code:
handler=new Handler();
runnable=new Runnable() {
#Override
public void run() {
if (loader_fragment != null) {
AVLoadingIndicatorView loader = loader_fragment.getView().findViewById(R.id.loder_login);
loader.setVisibility(View.INVISIBLE);
timer.cancel();
}
Home_Screen home_screen = (Home_Screen) getFragmentManager()
.findFragmentById(R.id.Home_screen_fragment);
fragmentManager1 = getFragmentManager();
fragmentTransaction1 = fragmentManager1.beginTransaction();
fragmentTransaction1.setCustomAnimations(R.animator
.slide_in_left, R.animator.slide_out_left, R.animator
.slide_in_right, R.animator.slide_out_right);
//Home_screen_student home_screen_student = new
//Home_screen_student();
fragmentTransaction1.replace(R.id.Home_screen_fragment,
new Home_Screen());
fragmentTransaction1.addToBackStack(null);
fragmentTransaction1.commit();
}
};
timer=new Timer();
timer.schedule(new TimerTask() {
#Override
public void run() {
handler.post(runnable);
}
}, 10000,1000);
}
Logcat:
04-24 02:01:07.437 12567-12567/? E/Zygote: no v2
04-24 02:03:09.912 12567-12567/com.example.user.attendance E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.user.attendance, PID: 12567
java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1433)
at android.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1451)
at android.app.BackStackRecord.commitInternal(BackStackRecord.java:687)
at android.app.BackStackRecord.commit(BackStackRecord.java:663)
at com.example.user.attendance.MainActivity$3$2.run(MainActivity.java:186)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:7402)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
The fragment keep opening from left to right like a loop until the app stopped.
I am quite new to android development and I am facing a NullPointerException when I am trying to call an AsyncTask which is an inner class in another class.
I believe it is the way I am instantiating it but this is what I have:
// This onClick is in my adapter class - which is a separate Java File and class
#Override
public void onClick(View v) {
UploadRes uploadRes = new UploadRes();
UploadRes.UploadResConfirm uploadResConfirm = uploadRes.new UploadResConfirm(v.getContext());
uploadResConfirm.execute(fileName, filePath);
}
public class UploadResConfirm extends AsyncTask<String, String, String> {
Dialog dialog;
Context context;
public UploadResConfirm(Context context){
this.context = context;
}
#Override
protected void onPreExecute(){
dialog = new Dialog(UploadRes.this);
dialog.setTitle("Currently uploading");
dialog.show();
}
I believe it has got something to do with the dialog box itself being instantiated in the AsyncTask class.
The error stack trace on Logcat - its the Dialog, I think its in the wrong place...
java.lang.NullPointerException
at codeman.androapp.UploadRes$UploadResConfirm.onPreExecute(UploadRes.java:246)
at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
at android.os.AsyncTask.execute(AsyncTask.java:534)
at android.view.View.performClick(View.java:4240)
at android.view.View$PerformClick.run(View.java:17721)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
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:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Some help if any would be much obliged.
Instead of dialog = new Dialog(UploadRes.this);
Try
dialog = new Dialog(context);
your are passing a wrong context to create dialog.
I am working on a financial app and i have to use BigDecimal to calculate currency.Now I am trying to make one entrance activity which is searching in the SharedPreferences for a previous registration and if their is one it starts another activity , if not it starts the registration activity.The problem is the registration activity causes NumberFormatException Error while I am trying to construct a new object of time Profit (the Profit class contains BigDecimal field).Also I am not quite sure that I am using SharedPreferences right.I am not quite sure that my idea and my coding are fine because I am new at android development and i am stuck with this problem so I am giving you all the classes.
the Registration activity:
public class Registration extends Activity {
private static String enteredPassword;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final EditText password1 = (EditText) findViewById(R.id.password1);
final EditText password2 = (EditText) findViewById(R.id.password2);
final EditText availability = (EditText) findViewById(R.id.availability);
EditText profitEditText = (EditText) findViewById(R.id.profit);
Spinner spinner = (Spinner) findViewById(R.id.period_spinner);
Button registrationButton = (Button) findViewById(R.id.registrationButton);
DatePicker picker = (DatePicker) findViewById(R.id.thePicker);
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
R.array.periods_array, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
final String balance = availability.getText().toString().replace(",",".");
String profitPeriod = ((Period) spinner.getSelectedItem()).name();
final Profit profit = new Profit("regular_profit", profitEditText.getText().toString(),
profitPeriod ,picker);
registrationButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (password1.getText().toString().equals(password2.getText().toString())) {
enteredPassword = password1.getText().toString();
Repository.setPassword(enteredPassword, mContext);
}
Repository.setBalance(balance, mContext);
Repository.setProfit(profit, mContext);
}
});
}
}
the profit activity
public class Profit {
private Date mProfitDate;
private Date mNextProfitDate;
private BigDecimal value;
public final static String TITLE = "title";
public final static String PERIOD = "period";
Profit(String title,String value, String period, DatePicker picker) {
this.mTitle = title;
if(value!=null){this.value = new BigDecimal(value);}else{ this.value = new BigDecimal("0.0");};
this.mPeriod = Period.class.cast(period);
this.mProfitDate = Repository.getDateFromPicker(picker);
}
public long getNextProfitDate(Date profitDate, Period period){
long unixProfitDate = profitDate.getTime() / 1000L;
long nextProfitDate=0;
switch (period){
case DAILY:
nextProfitDate = DateUtils.DAY_IN_MILLIS/1000 + unixProfitDate;
break;
case WEEKLY:
nextProfitDate = DateUtils.WEEK_IN_MILLIS/1000 + unixProfitDate;
break;
case MONTHLY:
Date dateNow = new Date();
dateNow.getTime();
nextProfitDate = Repository.monthsToSeconds(Calendar.getInstance()
.get(Calendar.MONTH)) + unixProfitDate;
break;
case YEARLY:
nextProfitDate = DateUtils.YEAR_IN_MILLIS/1000 + unixProfitDate;
break;
}
return nextProfitDate;
}
}
the entrance activity
public class EnterActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_enter);
CountDownTimer timer = new CountDownTimer(3000, 100) {
public void onTick(long millisUntilFinished) {
}
public void onFinish() {
if(Repository.getPassword(mContext.getApplicationContext()).equals("No Value")){
Intent registrationIntent = new Intent(mContext, Registration.class);
startActivity(registrationIntent);
}
else{
Intent configurationIntent = new Intent(mContext, Configuration.class);
startActivity(configurationIntent);
}
}
}.start();
}
}
the Repository
public class Repository {
public static SharedPreferences sharedPreferences;
private static SharedPreferences getPrefs(Context context) {
return context.getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE);
}
public static String getPassword(Context context){
return getPrefs(context).getString(PASSWORD,"No Value");
}
public Repository() {
}
public static void setPassword(String password, Context context){
SharedPreferences.Editor editor = getPrefs(context).edit();
editor.putString(PASSWORD, password);
editor.commit();
}
public static void setBalance(String balance, Context context){
SharedPreferences.Editor editor = getPrefs(context).edit();
editor.putString(BALANCE, balance);
editor.commit();
}
public static void setProfit(Profit profit, Context context){
SharedPreferences.Editor editor = getPrefs(context).edit();
editor.putString(BALANCE, profit.getValue().toString());
editor.commit();
}
}
the output
E/AndroidRuntime: FATAL EXCEPTION: main
E/AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{/.Registration}: java.lang.NumberFormatException: Bad offset/length: offset=0 len=0 in.length=0
E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
E/AndroidRuntime: at android.app.ActivityThread.access$600(ActivityThread.java:123)
E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime: at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:4424)
E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime: Caused by: java.lang.NumberFormatException: Bad offset/length: offset=0 len=0 in.length=0
E/AndroidRuntime: at java.math.BigDecimal.<init>(BigDecimal.java:282)
E/AndroidRuntime: at java.math.BigDecimal.<init>(BigDecimal.java:438)
E/AndroidRuntime: at .Profit.<init>(Profit.java:41)
E/AndroidRuntime: at .Registration.onCreate(Registration.java:57)
E/AndroidRuntime: at android.app.Activity.performCreate(Activity.java:4466)
E/AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
E/AndroidRuntime: at android.app.ActivityThread.access$600(ActivityThread.java:123)
E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime: at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:4424)
E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)
You instantiate a Profit in only one place in the code you presented:
Profit profit = new Profit("regular_profit", profitEditText.getText().toString(),
profitPeriod, picker);
If that causes a NumberFormatException then it must come from this code in the Profit constructor:
if(value!=null){this.value = new BigDecimal(value);}else{ this.value = new BigDecimal("0.0");};
Since the value String will have come from invoking toString() on an object, you can rely on it to not be null (and anyway, if it were null then you would end up at new BigDecimal("0.0"), and you can verify for yourself that that works fine). That leaves us with new BigDecimal(value) as the culprit. The docs for this constructor provide details of the expected format of the argument string. If the argument does not comply with that format then a NumberFormatException will be thrown.
Among the more likely malformed strings that one might imagine in a scenario such as you describe is an empty string, which is not the same as null in Java. Given that the text is coming from a UI field, you also have to watch out for fun and difficult-to-spot malformations such as leading and trailing whitespace.
Perhaps it would be better to write the affected part of the constructior like so:
if (value != null) {
value = value.trim();
this.value = value.length() == 0 ? BigDecimal.ZERO : new BigDecimal(value);
} else {
this.value = BigDecimal.ZERO;
}
Do note that even with that change, this constructor will still throw NumberFormatException in the event of other kinds of malformation. Wherever you are uncertain about the validity of the data, you should be prepared to handle such an exception.
You aren't parsing your string to a Big Decimal correctly.
The following in your Profit contructor:
if(value!=null)
{
this.value = new BigDecimal(value);
}
else
{
this.value = new BigDecimal("0.0");
}
Needs to parse the string to a BigDecimal. Like the following where this.value is of type BigDecimal:
this.value = (BigDecimal) decimalFormat.parse(value);
Also keep in mind that decimalFormat.parse can throw a ParseException. You will need to handle it with try/catch or throw it.
I am beginner and I had a test. I did all tasks, but I have a problem -
public class HttpTask extends AsyncTask<Integer, String, String> {####
ProgressDialog dialog;
Context context;
public HttpTask(Activity activity) {
//init progress dialog
dialog = new ProgressDialog(context);****
dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
}
protected void onPreExecute() {
// show progress dialog
dialog.setMessage("Loading...");
dialog.setCancelable(false);
}
protected String doInBackground(Integer... params) {
//freeze system to 5 seconds
try {
int seconds = params[0]*5;####
TimeUnit.SECONDS.sleep(seconds);
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(final String success) {
// if there is progress dialog hide it
dialog.dismiss();
}
}
It crashes, when I try to compile it (I showed where are problems with * sign):
08-03 10:43:10.873 29441-29441/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.NullPointerException
at android.app.AlertDialog.resolveDialogTheme(AlertDialog.java:142)
at android.app.AlertDialog.<init>(AlertDialog.java:98)
at android.app.ProgressDialog.<init>(ProgressDialog.java:77)
at net.joerichard.androidtest.main.f.HttpTask.<init>(HttpTask.java:26)
at net.joerichard.androidtest.main.f.F_Networking_Activity$1.onClick(F_Networking_Activity.java:27)
at android.view.View.performClick(View.java:4107)
at android.view.View$PerformClick.run(View.java:17166)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:155)
at android.app.ActivityThread.main(ActivityThread.java:5559)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1074)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:841)
at dalvik.system.NativeStart.main(Native Method)
08-03 10:43:10.913 754-877/? E/EmbeddedLogger﹕ App crashed! Process: net.joerichard.androidtest
08-03 10:43:10.913 754-877/? E/EmbeddedLogger﹕ App crashed! Package: net.joerichard.androidtest v1 (1.0)
08-03 10:43:10.913 754-877/? E/EmbeddedLogger﹕ Application Label: AndroidTest
This is class of main activity.
public class F_Networking_Activity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_f__networking_);
// bDownload: start HttpTask
Button bDownload = (Button) findViewById(R.id.bDownload);
bDownload.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
HttpTask task = new HttpTask(F_Networking_Activity.this);****
task.execute();
}
});
}
Thank you for your answers. Now I have another problem (I showed with # sign of second problems)
08-03 11:28:18.292 754-877/? E/EmbeddedLogger﹕ App crashed! Process: net.joerichard.androidtest'
08-03 11:28:18.292 754-877/? E/EmbeddedLogger﹕ App crashed! Package: net.joerichard.androidtest v1 (1.0)
08-03 11:28:18.292 754-877/? E/EmbeddedLogger﹕ Application Label: AndroidTest
08-03 11:28:18.292 30544-30726/? E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:299)
at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:864)
Caused by: java.lang.ArrayIndexOutOfBoundsException: length=0; index=0
at net.joerichard.androidtest.main.f.HttpTask.doInBackground(HttpTask.java:40)
at net.joerichard.androidtest.main.f.HttpTask.doInBackground(HttpTask.java:20)
at android.os.AsyncTask$2.call(AsyncTask.java:287)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
at java.lang.Thread.run(Thread.java:864)
Actually, your context is null because you didn't initialize it.
Add one extra line inside your HttpTask:
public HttpTask(Activity activity) {
this.context = activity;
dialog = new ProgressDialog(context);
dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
}
and change Context to Activity like this:
Activity context;
Now call this context anywhere in your class.
Yes you must get NullPointer. Because your context is null.
Change this like
public HttpTask(Context _context) {
context = _context;
//init progress dialog
dialog = new ProgressDialog(context);****
dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
}
android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy#406a6678 is not valid; is your activity running?
at android.view.ViewRoot.setView(ViewRoot.java:528)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
at android.view.Window$LocalWindowManager.addView(Window.java:424)
at android.app.Dialog.show(Dialog.java:241)
at android.app.Activity.showDialog(Activity.java:2569)
at android.app.Activity.showDialog(Activity.java:2527)
at MyCode$8$4.run(MyCode.java:557)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3683)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:878)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636)
at dalvik.system.NativeStart.main(Native Method)
I am getting above exception when following code is executed. This file dialog will shown once the processing is done and progressbar reaches 100%. FileSaveDialog extends Dialog and implements OnCompletionListener
runOnUiThread(new Runnable() {
#Override
public void run() {
showDialog(error.Code());//Line 557
}
});
#Override
protected Dialog onCreateDialog(int id) {
Dialog dialog;
AlertDialog.Builder builder;
final ScrollView scrollView = new ScrollView(this);
final TextView textView = new TextView(this);
switch (id) {
// Other cases are here
case 4:
File playFile = new File(mediaPath, TEMP_WAV_FILE_NAME);
dialog = new FileSaveDialog(this, getResources(),
playFile.getAbsolutePath(), saveDiscardHandler);
dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
#Override
public void onCancel(DialogInterface dialog) {
// do whatever you want the back key to do
cleanUp();
}
});
break;
// Other cases are here
default:
dialog = null;
}
return dialog;
}
You must check activity isFinishing() If the activity is finishing, returns true; else returns false.