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IllegalStateException: Fragment FiltroOpcao not attached to a context.- Android Error

I'm trying get item selected from user to fragment formulary on my Android app, following the google documentation this is possible using this methods from the library, i tried implement this methods and your Interface in my DialogFragment and get it on my fragment formulary, but, the error is returned when i click on the button necessary to open Dialog Fragment.
This is my Dialog Fragment class:
public class FiltroOpcao extends DialogFragment {
OnFiltroEscolhido listener;
private final String[] filtroAnuncio = getResources().getStringArray(R.array.filtro_array);
#Override
public void onAttach(#NonNull Context context) {
super.onAttach(context);
try {
listener = (OnFiltroEscolhido) getTargetFragment();
}catch(ClassCastException e){
throw new ClassCastException(context.toString()+"Deve ser implementado");
}
}
#NonNull
#Override
public Dialog onCreateDialog(#Nullable Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Filtrar por:")
.setItems(R.array.filtro_array, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
listener.pegarFiltro(filtroAnuncio[which]);
}
});
return builder.create();
}
public interface OnFiltroEscolhido{
void pegarFiltro (String escolha);
}
}
And it is where i called the DialogFragment and the crash happens on my VendaFragment fragment class
public void onClick(View v) {
FiltroOpcao filtroOpcao = new FiltroOpcao();
filtroOpcao.setTargetFragment(VendaFragment.this, 1);
filtroOpcao.show(VendaFragment.this.getChildFragmentManager(), "FiltroOpcao");
}

private final String[] filtroAnuncio = getResources().getStringArray(R.array.filtro_array);
Probably, getResources() is the problem because you are using it before the fragment was attached.
Try to move the initialization of filtroAnuncio to onCreateDialog()
private String[] filtroAnuncio;
#NonNull
#Override
public Dialog onCreateDialog(#Nullable Bundle savedInstanceState) {
filtroAnuncio = getResources().getStringArray(R.array.filtro_array);
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle("Filtrar por:")
.setItems(R.array.filtro_array, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
listener.pegarFiltro(filtroAnuncio[which]);
}
});
return builder.create();
}

Clickable text link in Alert Dialog to open Activity

I want one word of the text in my Alert Dialog to be clickable and open an activity on click.
I tried to use a ClickableSpan in a SpannableString, but the click is not recognized at all...
public class TestDialog extends AppCompatDialogFragment {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
String text = "This is a test message.";
SpannableString ss = new SpannableString(text);
ClickableSpan cs = new ClickableSpan() {
#Override
public void onClick(#NonNull View view) {
System.out.println("Test");
}
};
ss.setSpan(cs, 10, 14, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage(ss)
.setTitle("Test Title")
.setPositiveButton("Ok!", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
// do something
}
})
.setNegativeButton("No!", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
// do something
}
});
return builder.create();
}
}
Thanks for your help!

Ok, I did it with the help of several other posts here and youtube videos.
I use a Custom Layout showing text combined with clickable spans which I then show in the Alert Dialog:
public class TestDialog extends AppCompatDialogFragment {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
String text = "This is a test message.";
SpannableString ss = new SpannableString(text);
ClickableSpan cs = new ClickableSpan() {
#Override
public void onClick(#NonNull View view) {
Intent testIntent = new Intent(getContext(), Test.class);
getContext().startActivity(testIntent);
}
};
ss.setSpan(cs, 10, 14, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = getActivity().getLayoutInflater();
View view = inflater.inflate(R.layout.test_view, null);
TextView message = (TextView) view.findViewById(R.id.textView);
message.setMovementMethod(LinkMovementMethod.getInstance());
message.setText(ss);
builder.setView(view)
.setTitle("Test Title")
.setPositiveButton("Ok!", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
// do something
}
})
.setNegativeButton("No!", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
// do something
}
});
return builder.create();
}
}
I hope I could also help you.

First, Make your text HTML links clickable by using Html.fromHtml:
.setMessage(Html.fromHtml(text))
and, Add this line to your Activity in Manifest:
<data android:host="my.app" android:scheme="http"></data>
Then, http://my.app should launch your activity.

How to use custom dialog in DialogFragment?

In my application I want use custom dialog into DialogFragment . I can use AlertDialog into DialogFragment but I want use custom dialog instead of AlertDialog.
I write below codes into DialogFragment :
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
View rootView = LayoutInflater.from(mActivity).inflate(R.layout.fragment_dialog_comment, null);
initVar();
initView(rootView);
initFunctionality();
return new AlertDialog.Builder(mActivity)
.setView(rootView)
.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
authorName = edtAuthorName.getText().toString().trim();
authorEmail = edtAuthorEmail.getText().toString().trim();
authorComment = edtAuthorComment.getText().toString().trim();
AppPreference.getInstance(mActivity).setString(PrefKey.KEY_EMAIL, authorEmail);
AppPreference.getInstance(mActivity).setString(PrefKey.KEY_NAME, authorName);
if (commentId == AppConstant.THIS_IS_COMMENT) {
sendComment(authorName, authorEmail, authorComment);
} else {
sendReply(authorName, authorEmail, authorComment);
}
}
})
.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
if (dialogInterface != null) {
dialogInterface.dismiss();
}
}
})
.create();
}
I want use below code instead of above AlertDialog :
final Dialog dialog = new Dialog(mActivity);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setBackgroundDrawableResource(android.R.color.transparent);
dialog.setContentView(R.layout.fragment_dialog_comment);
edtAuthorName = dialog.findViewById(R.id.edt_author_name);
edtAuthorEmail = dialog.findViewById(R.id.edt_author_email);
edtAuthorComment = dialog.findViewById(R.id.edt_author_comment);
dialogComment_okBtn = dialog.findViewById(R.id.dialogComment_okBtn);
dialogComment_cancelBtn = dialog.findViewById(R.id.dialogComment_cancelBtn);
edtAuthorName.setText(AppPreference.getInstance(mActivity).getString(PrefKey.KEY_NAME));
dialogComment_cancelBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (dialog != null) {
dialog.dismiss();
}
}
});
dialogComment_okBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
authorName = edtAuthorName.getText().toString().trim();
authorEmail = edtAuthorEmail.getText().toString().trim();
authorComment = edtAuthorComment.getText().toString().trim();
AppPreference.getInstance(mActivity).setString(PrefKey.KEY_EMAIL, "noEmail#gmail.com");
AppPreference.getInstance(mActivity).setString(PrefKey.KEY_NAME, authorName);
if (commentId == AppConstant.THIS_IS_COMMENT) {
sendComment(authorName, "noEmail#gmail.com", authorComment);
} else {
sendReply(authorName, "noEmail#gmail.com", authorComment);
}
dialog.dismiss();
}
});
dialog.show();
How can I it? Please don't give me negative points and please help me

You can extend your class with DialogFragment and rest will be like fragments like
public class YOurDialogFragment extends DialogFragment {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Dialog dialog = super.onCreateDialog(savedInstanceState);
//If don't want toolbar
dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
return dialog;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.customLayout, container, false);
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
}

I Have Crash Error when I Clicked Button; The specified child already has a parent. You must call removeView() on the child's parent first

I have this error:
The specified child already has a parent. You must call removeView()
on the child's parent first.
When I clicked buildNot.setPosiviteButton.
Help me please, thanks guys!
This is my Java source code:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btnDersEkle = (Button) findViewById(R.id.btnDersEkle);
list = (ListView) findViewById(R.id.listView1);
adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1);
etDers = new EditText(MainActivity.this);
etNot = new EditText(MainActivity.this);
//Dialog
AlertDialog.Builder build = new AlertDialog.Builder(MainActivity.this);
build.setTitle("Ders Ekle");
build.setView(etDers);
//Dialog Not
final AlertDialog.Builder buildNot = new AlertDialog.Builder(MainActivity.this);
buildNot.setTitle("Not Ekle");
buildNot.setView(etNot);
build.setPositiveButton("Tamam", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
adapter.add(etDers.getText().toString());
dialog.cancel();
}
});
final AlertDialog alertDers = build.create();
buildNot.setPositiveButton("Tamam", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
adapter = (ArrayAdapter ) list.getAdapter();
String item = (String) list.getSelectedItem();
int position = list.getSelectedItemPosition();
item += "YourText";
adapter.insert(item, position);
dialog.cancel();
}
});
final AlertDialog alertNot = buildNot.create();
list.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
alertNot.show();
}
});
list.setAdapter(adapter);
btnDersEkle.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
alertDers.show();
}
});
}

That is because nothing is selected.
list.getSelectedItemPosition() will always return -1.
"Click" and "select" are separate things. "Select" in a ListView is done via the pointing device (D-pad, trackball, arrow keys, etc.).
list.getSelectedItemPosition() will always return -1 if you are not using D-pad, trackball or arrow keys.
You should store the position in onItemClick(AdapterView<?> parent, View view, int position, long id) as a class member and access it in buildNot.setPositiveButton onClick.
Coding below, where mPosition is a class member of your class.
buildNot.setPositiveButton("Tamam", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
adapter = (ArrayAdapter ) list.getAdapter();
String item = (String) adapter.getItem(mPosition);
item += "YourText";
adapter.insert(item, mPosition);
dialog.cancel();
}
});
list.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
mPosition = position;
alertNot.show();
}
});

Try change your code like below, maybe help
public class MainActivity extends ListActivity {
int posmy;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mainlistnew);
Button btnDersEkle = (Button) findViewById(R.id.btnDersEkle);
final ListView list = getListView();
final ArrayAdapter adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1);
final EditText etDers = new EditText(MainActivity.this);
final EditText etNot = new EditText(MainActivity.this);
//Dialog
AlertDialog.Builder build = new AlertDialog.Builder(MainActivity.this);
build.setTitle("Ders Ekle");
build.setView(etDers);
//Dialog Not
final AlertDialog.Builder buildNot = new AlertDialog.Builder(MainActivity.this);
buildNot.setTitle("Not Ekle");
buildNot.setView(etNot);
build.setPositiveButton("Tamam", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
adapter.add(etDers.getText().toString());
dialog.cancel();
}
});
final AlertDialog alertDers = build.create();
buildNot.setPositiveButton("Tamam", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//adapter = (ArrayAdapter ) list.getAdapter();
//String item = (String) list.getSelectedItem();
//int position = list.getSelectedItemPosition();
int position=posmy;
String item = "YourText" + etNot.getText().toString();
adapter.insert(item, position);
dialog.cancel();
}
});
final AlertDialog alertNot = buildNot.create();
list.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
posmy=position;
alertNot.show();
}
});
list.setAdapter(adapter);
btnDersEkle.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
alertDers.show();
}
});
}
}

How to pass values from DIalog class to it's host

So this is my Dialog class:
public class SecondActivity extends DialogFragment {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = getActivity().getLayoutInflater();
builder.setView(inflater.inflate(R.layout.second, null))
.setPositiveButton("Save", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dismiss();
}
});
return builder.create();
}
}
In my dialog there are 2 edit texts which get 2 strings. I want to use those 2 strings in my MainActivity if the user presses on the save button. How do I do that?

The inflate method returns a view where you can execute a findViewById, like the following:
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inflater = getActivity().getLayoutInflater();
View v = inflater.inflate(R.layout.second, null);
EditView editView = (EditView)v.findById(R.id.your_edit_view);
builder.setView(v)
.setPositiveButton("Save", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dismiss();
}
});
return builder.create();
}