Develop Reference

Crashed while inserting text in edittext

I have a popupwindow in which i have edit text.when ever i write some string with #gmail. (On inserting dot it crashesh) into editext the app crashes.for example if i write anil472#gmail.com ,it crashesh. It does not crashes if i simply write #gmail.com or any other string.it only crashes in scenario when we have some string appnended with # and then appended with dot after some string
java.lang.NullPointerException: Attempt to invoke direct method 'void android.widget.Editor$SelectionModifierCursorController.initDrawables()' on a null object reference
at android.widget.Editor$SelectionModifierCursorController.access$300(Editor.java:6696)
at android.widget.Editor.getEmailPopupWindow(Editor.java:1469)
at android.widget.Editor.showEmailPopupWindow(Editor.java:1477)
at android.widget.Editor.handleEmailPopup(Editor.java:1456)
at android.widget.Editor.updateCursorPosition(Editor.java:2099)
at android.widget.TextView.getUpdatedHighlightPath(TextView.java:7823)
at android.widget.TextView.onDraw(TextView.java:8008)
at android.view.View.draw(View.java:21473)
at android.view.View.updateDisplayListIfDirty(View.java:20350)
at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4396)
at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4369)
at android.view.View.updateDisplayListIfDirty(View.java:20310)
at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4396)
at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4369)
at android.view.View.updateDisplayListIfDirty(View.java:20310)
at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4396)
at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4369)
at android.view.View.updateDisplayListIfDirty(View.java:20310)
at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4396)
at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4369)
at android.view.View.updateDisplayListIfDirty(View.java:20310)
at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:575)
at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:581)
at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:654)
at android.view.ViewRootImpl.draw(ViewRootImpl.java:3707)
at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:3502)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2839)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1800)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7773)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1058)
at android.view.Choreographer.doCallbacks(Choreographer.java:865)
at android.view.Choreographer.doFrame(Choreographer.java:800)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1043)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:224)
at android.app.ActivityThread.main(ActivityThread.java:7520)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)

Getting java.util.NoSuchElementException with Iterator.next() while using the libphonenumber

code :
public void extractPhoneNumber(String input){
Iterator<PhoneNumberMatch> existsPhone= PhoneNumberUtil.getInstance().findNumbers(input, "IN").iterator();
while (existsPhone.hasNext()){
System.out.println("Phone == " + existsPhone.next().number());
Log.d("existsPhone",":"+existsPhone.next().rawString());
gotPhone.setText(existsPhone.next().rawString());
}
}
Log :
2019-06-11 16:23:43.059 11176-11176/com.example.cardscaning E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.cardscaning, PID: 11176
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.cardscaning/com.example.cardscaning.Activity.ProcessImage}: java.util.NoSuchElementException
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2678)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2743)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1490)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6165)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:888)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:778)
Caused by: java.util.NoSuchElementException
at com.google.i18n.phonenumbers.PhoneNumberMatcher.next(PhoneNumberMatcher.java:710)
at com.google.i18n.phonenumbers.PhoneNumberMatcher.next(PhoneNumberMatcher.java:43)
at com.example.cardscaning.Activity.ProcessImage.extractPhoneNumber(ProcessImage.java:291)
at com.example.cardscaning.Activity.ProcessImage.onCreate(ProcessImage.java:97)
at android.app.Activity.performCreate(Activity.java:6687)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1140)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2631)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2743) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1490) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6165) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:888) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:778) 
Inside log I can get desire result but exception occurs when I am adding this line gotPhone.setText(existsPhone.next().rawString())
Desirable outcome is able use extracted number.

You are calling next() thrice in one iteration forcing the Iterator to move to an element that doesn't exist.
Instead of:
while (existsPhone.hasNext()){
System.out.println("Phone == " + existsPhone.next().number());
Log.d("existsPhone",":"+existsPhone.next().rawString());
//...
}
Use something like:
while (existsPhone.hasNext()){
PhoneNumberMatch phone = existsPhone.next();
System.out.println("Phone == " + phone.number());
Log.d("existsPhone",":"+phone.rawString());
//....
}

Error while converting String to Integer in android

I am trying to convert string value into int but it give me error:
android.content.res.resources$notfoundexception string resource id #0x16 <
I tried parsing like:
String date = "29-30-2098";
String[] d = date.split("-");
int di = Integer.parseInt(d[1]);
Toast.makeText(MainActivity.this, di, Toast.LENGTH_SHORT).show();
if i give String data type to "di" then it print the correct value. But when i try to parse it to Int it give the error
And i also tried by using ValueOf(); but in all methods it give me error.
Error:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.myanxietyjournal, PID: 8830
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.myanxietyjournal/com.myanxietyjournal.MainActivity}: android.content.res.Resources$NotFoundException: String resource ID #0x1e
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2793)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2864)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:156)
at android.app.ActivityThread.main(ActivityThread.java:6523)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)
Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x1e
at android.content.res.HwResources.getText(HwResources.java:442)
at android.widget.Toast.makeText(Toast.java:307)
at com.myanxietyjournal.MainActivity.onCreate(MainActivity.java:48)
at android.app.Activity.performCreate(Activity.java:6915)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2746)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2864) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567) 
at android.os.Handler.dispatchMessage(Handler.java:105) 
at android.os.Looper.loop(Looper.java:156) 
at android.app.ActivityThread.main(ActivityThread.java:6523) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832) 

There are two versions of makeText:
makeText(Context context, CharSequence text, int duration)
makeText(Context context, int resId, int duration)
The first one takes a String as the second parameter, and shows the message in the string to the user.
The second one takes a resource id as the second parameter, tries to lookup the resource, and fails because you don't have a resource with that id.
To show the int value to the user, you need to convert it to string first, e.g. String.valueOf(di).

How to use a Cursor?

I have an app that receives the id of an animal and pass that id to a method from the database that will be read several times in a do-while. I want to know why this error happens?
This is my code:
bd = new BaseDados(getApplicationContext());
Cursor cc = bd.getIdAnimal(chipnumber);
if (cc.moveToFirst()) {
idanimal = cc.getInt(cc.getColumnIndex("idanimal"));
}
Cursor ccc = bd.getGruupsnosAnimals(idanimal);
do{
if(ccc.moveToFirst()){
String groupname= ccc.getString(ccc.getColumnIndex("groupname"));
}
}while (ccc.moveToNext());
This is my error:
Process: com.example.nobre.myapplication, PID: 4529
android.database.sqlite.SQLiteException: not an error (code 0)
at android.database.sqlite.SQLiteConnection.nativeExecuteForCursorWindow(Native Method)
at android.database.sqlite.SQLiteConnection.executeForCursorWindow(SQLiteConnection.java:845)
at android.database.sqlite.SQLiteSession.executeForCursorWindow(SQLiteSession.java:836)
at android.database.sqlite.SQLiteQuery.fillWindow(SQLiteQuery.java:62)
at android.database.sqlite.SQLiteCursor.fillWindow(SQLiteCursor.java:144)
at android.database.sqlite.SQLiteCursor.getCount(SQLiteCursor.java:133)
at android.database.AbstractCursor.moveToPosition(AbstractCursor.java:197)
at android.database.AbstractCursor.moveToFirst(AbstractCursor.java:237)
at com.example.nobre.myapplication.Activities.VerAnimaisActivity.showDialog(VerAnimaisActivity.java:193)
at com.example.nobre.myapplication.Activities.VerAnimaisActivity$2.onClick(VerAnimaisActivity.java:153)
at android.view.View.performClick(View.java:4780)
at android.view.View$PerformClick.run(View.java:19866)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
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)

Exception: not an error? That's a new one.
Your bottom loop is a bit weird and may be a bug- you're moving to next but may not even have moved to first if that failed. And if it succeeded you'll infinitely loop. Try this instead:
if(ccc.moveToFirst()){
do{
String groupname= ccc.getString(ccc.getColumnIndex("groupname"));
}while (ccc.moveToNext());
}

do{
if(ccc.moveToFirst()){
String groupname= ccc.getString(ccc.getColumnIndex("groupname"));
}
}while (ccc.moveToNext());
this is an infinite loop, while you have next item in your cursor, you move to first one, and next iteration you would again move to first one.
Also do not forget to call Cursor.close() after usage.

Try this:
// Move the cursor to the first row if cursor is not empty
if(ccc.moveToFirst()) {
do{
String groupname= ccc.getString(ccc.getColumnIndex("groupname"));
}while (ccc.moveToNext()); // Move cursor to next row until it pass last entry
}
Instead of:
do{
if(ccc.moveToFirst()) {
String groupname= ccc.getString(ccc.getColumnIndex("groupname"));
}
}while (ccc.moveToNext());

Android Studio app keeps crashing after button click

Im a beginner in java but I'm trying to build exercises and I ran into this problem. The user types in a donation, presses the button and the value of donations increments. Ive written the entire code but when I click the button to add to the donation count, the app crashes. Ive followed all the teachings of my teacher. I create a method in the activity, the in the ui builder I go to the button on click property and set it to that method. It should go smoothly but it crashes whenever I click the button. This is my activity which I set the onClick property to computeDonation.
public void computeDonation(View v){
String addedText = ((EditText)findViewById(R.id.AmountText)).getText().toString();
DonationModel donation = new DonationModel(addedText);
String answer = donation.calcDonation();
((TextView)findViewById(R.id.totalText)).setText(answer);
}
This is the model:
String textAdded;
double addedDonation;
public DonationModel(String y) {
textAdded = y;
}
public String calcDonation(){
double counter = Double.parseDouble(textAdded);
addedDonation += counter;
Locale locale = new Locale("en", "CA");
NumberFormat fmt = NumberFormat.getCurrencyInstance(locale);
return fmt.format(addedDonation);
}
Ive even tried without the number format just to see if it sends back to the activity but it doesn't. BTW for my class I'm using an older version of android studio.
This is the logcat:
02-15 17:12:28.797 21619-21619/ca.roumani.donations E/AndroidRuntime: FATAL EXCEPTION: main
Process: ca.roumani.donations, PID: 21619
java.lang.IllegalStateException: Could not execute method for android:onClick
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
at android.view.View.performClick(View.java:5197)
at android.view.View$PerformClick.run(View.java:20909)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:5197) 
at android.view.View$PerformClick.run(View.java:20909) 
at android.os.Handler.handleCallback(Handler.java:739) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:145) 
at android.app.ActivityThread.main(ActivityThread.java:5942) 
at java.lang.reflect.Method.invoke(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:372) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194) 
Caused by: java.lang.NumberFormatException: Invalid double: ""
at java.lang.StringToReal.invalidReal(StringToReal.java:63)
at java.lang.StringToReal.parseDouble(StringToReal.java:267)
at java.lang.Double.parseDouble(Double.java:301)
at ca.roumani.donations.DonationModel.calcDonation(DonationModel.java:20)
at ca.roumani.donations.DonationActivity.computeDonation(DonationActivity.java:24)
at java.lang.reflect.Method.invoke(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:372) 
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) 
at android.view.View.performClick(View.java:5197) 
at android.view.View$PerformClick.run(View.java:20909) 
at android.os.Handler.handleCallback(Handler.java:739) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:145) 
at android.app.ActivityThread.main(ActivityThread.java:5942) 
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:1399) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194) 

It seems like your textAdded is an empty String, which causes the NumberFormatException and crashes your app. What you can do to prevent this, is to check if your textAdded is not empty before parsing it:
public String calcDonation() {
if (TextUtils.isEmpty(textAdded)) {
//textAdded is empty, so just return an empty String
return "";
}
//We're sure that textAdded has a value, so we can try to parse it
double counter = Double.parseDouble(textAdded);
addedDonation += counter;
Locale locale = new Locale("en", "CA");
NumberFormat fmt = NumberFormat.getCurrencyInstance(locale);
return fmt.format(addedDonation);
}
Or just prevent the method from being invoked before the user has entered a value in the EditText view:
public void computeDonation(View v){
String addedText = ((EditText)findViewById(R.id.AmountText)).getText().toString();
if (TextUtils.isEmpty(textAdded)) {
Toast.makeText(context, "Please enter a valid number", Toast.LENGTH_SHORT).show();
} else {
DonationModel donation = new DonationModel(addedText);
String answer = donation.calcDonation();
((TextView)findViewById(R.id.totalText)).setText(answer);
}
}

I don't see where double addedDonation; is initialized, you can't use += when the variable has no value.

The problem is that you attempt to parse an empty string as a double. You need to verify that the user entered valid data before doing any calculations. One way to help you do this is to separate the calculation from the String passing and formatting. I suggest that you modify calcDonation() so that it only handles numeric data. Another method can worry about converting numbers to and from Strings. This will allow you to validate user input and display an appropriate error message when necessary.