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Seekbar is null, even though it exists

My goal is to access a seekbar. I tried many things, even pulling the Seekbar seekingbar before the override, but I get always the null toast. R.layout.firstLayout, R.layout.secondLayout, R.id.seekingbar, they all exist.
This is my abbreviated code
public class MainActivity extends AppCompatActivity {
SeekBar seekingbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
seekingbar = (SeekBar) findViewById(R.id.seekingbar);
LayoutInflater inflater = getLayoutInflater();
final View firstLayout = inflater.inflate(R.layout.firstLayout, null);
final View secondLayout = inflater.inflate(R.layout.secondLayout, null);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
AlertDialog dialog = new AlertDialog.Builder(MainActivity.this)
.setPositiveButton("Forward", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
AlertDialog dialog2 = new AlertDialog.Builder(MainActivity.this)
.setView(secondLayout)
.setPositiveButton("Okay", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
if (seekingbar == null)
{
Toast.makeText(MainActivity.this,"Null",Toast.LENGTH_LONG).show();
}
}
}).create();
dialog2.show();
}
}).create();
dialog.show();
}
});
}
}
firstLayout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/seekbarll"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dp"
tools:context=".MainActivity">
<SeekBar
android:id="#+id/seekingbar"
style="#style/Widget.AppCompat.SeekBar.Discrete"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="10"
android:min="0"
android:progress="3" />
</LinearLayout>

Try to find the seekBar in the firstLayout after declaring it:
"firstLayout.findViewById(R.id.seekbar)"

AlertDialog Builder OnItemSelectedListener

I have a tyny, but annoying problem with the AlertDialog Builder.
I want to handle an item select in a custom made AlertDialog, but OnItemSelectedListener doesn't seem to pick my clicks.
Custom Dialog:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="200dp"
android:layout_height="120dp"
android:layout_centerHorizontal="true"
android:layout_marginTop="60dp"
android:background="#AAFFFFFF"
android:orientation="vertical">
<TextView
android:text="English"
android:layout_width="match_parent"
android:layout_height="40dp"
android:id="#+id/lang_english"
android:gravity="center_vertical"
android:background="#color/borders"
android:paddingLeft="10dp"
android:onClick="onLanguageButtonClicked" />
<View
android:layout_height="1dp"
android:layout_width="match_parent"
android:background="#000000" />
<TextView
android:text="عربى"
android:layout_width="match_parent"
android:layout_height="40dp"
android:id="#+id/lang_arabic"
android:gravity="center_vertical"
android:background="#color/borders"
android:paddingRight="10dp"
android:onClick="onLanguageButtonClicked" />
<View
android:layout_height="1dp"
android:layout_width="match_parent"
android:background="#2e2e2e"/>
<TextView
android:text="کوردی "
android:layout_width="match_parent"
android:layout_height="40dp"
android:id="#+id/lang_kurdish"
android:gravity="center_vertical"
android:background="#color/borders"
android:paddingRight="10dp"
android:onClick="onLanguageButtonClicked" />
</LinearLayout>
On button click I open the dialog and handle it:
public void onClickDrawer(View view) {
switch (view.getId()) {
case R.id.button_account_language:
handleLanguageDialog();
break;
case R.id.button_account_currency:
handleCurrencyDialog();
break;
default:
break;
}
}
And the handler:
private void handleLanguageDialog() {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setView(R.layout.dialog_language);
builder.setOnItemSelectedListener(new AdapterView.
OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
SharedPreferences preferences = PreferenceManager
.getDefaultSharedPreferences(getApplicationContext());
Log.i("info", "pressed" + Integer.toString(position));
restartInLocale(new Locale(preferences.getString("locale","")));
}
#Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
builder.setNegativeButton("CANCEL", new DialogInterface
.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
}
});
builder.create().show();
}
Is this the correct approach or am I missing something?
Thank you in advance!

I don't this is correct Approach, you are making it very much complex. If I am not wrong then you are trying to show Language selection dialog for that you should follow the below given steps.
Create string-array inside strings.xml resource file
<string-array name="lang">
<item>English</item>
<item>عربى</item>
</string-array>
When you want to show alert dialog write down below code
private void handleLanguageDialog() {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle(R.string.pick_color)
.setItems(R.array.lang, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// The 'which' argument contains the index position
// of the selected item
switch(which)
{
case 0:// English
break;
case 1:// عربى
break;
}
}
});
return builder.create();
}
This is the simplest way to show list of languages in alert dialog and without any positive or negative button .

It looks a bit off. It should look like this:
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
// Get the layout inflater
LayoutInflater inflater = getActivity().getLayoutInflater();
// Inflate and set the layout for the dialog
// Pass null as the parent view because its going in the dialog layout
builder.setView(inflater.inflate(R.layout.dialog_signin, null))
// Add action buttons
.setPositiveButton(R.string.signin, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
// sign in the user ...
}
})
.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
LoginDialogFragment.this.getDialog().cancel();
}
});
return builder.create();
}
https://developer.android.com/guide/topics/ui/dialogs.html

private void handleLanguageDialog() {
ArrayList<String> listItems = new ArrayList<>();
listItems.add("English");
listItems.add("Arabic");
new AlertDialog.Builder(this)
.setTitle("title")
.setCancelable(false)
.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, listItems),
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int item) {
}
}).setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
// sign in the user ...
}
}).setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
}
}).show();
}

Try to use setOnItemClick listener on the list/spinner view whichever you are using to display the list instead of builder itself. Like if you are using spinner to show the list use-
final Spinner spinner = (Spinner) layout.findViewById(R.id.spinner); spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3){
int item = spinner.getSelectedItemPosition();
commandWriter(item);
}
#Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});

Try this: add click listener to the language item in your Dialog
onItemSelected() is applied for listview or spinner items your Dialog layout dialog_language does not have those.
Try this code:
AlertDialog.Builder builder = new AlertDialog.Builder(this);
// Get the layout inflater
LayoutInflater inflater =getLayoutInflater();
View myview = inflater.inflate(R.layout.dialog_language, null);
// Inflate and set the layout for the dialog
builder.setView(myview);
TextView english = (TextView) myview.findViewById (R.id.lang_english);
english.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//do some stuff
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
Log.i("info", "pressed" + Integer.toString(position));
restartInLocale(new Locale(preferences.getString("locale","")));
}
});
TextView arabic = (TextView) myview.findViewById (R.id.lang_arabic);
arabic.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//do other stuff
}
});
// Add action buttons
builder.setPositiveButton("YES", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
builder.setNegativeButton("CANCEL", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
builder.show();

Alert Dialog - how to implement Cancel and Okay button

I have got this Alert Dialog which has these two buttons (Ok and Cancel). I want to know how I go about implementing it.
So When you click on the cancel button it should close the alert dialog and return back to the fragment I am currently on. And if I click on the Ok button it should replace the current alert dialog and place it with another one.
this is my code below for the confimration. java file;
public class confirmation extends DialogFragment {
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
LayoutInflater inf = getActivity().getLayoutInflater();
final View theDIalog = inf.inflate(R.layout.example_xml, null);
builder.setView(theDIalog);
AlertDialog dialog = builder.create();
theDIalog.findViewById(R.id.makeaTransferOk).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getActivity(), "Okay button is clicked", Toast.LENGTH_SHORT).show();
}
});
theDIalog.findViewById(R.id.makeaTransferCancel).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dialog.dismiss();
}
});
return dialog;
}
}
this is my code for the example_xml;
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ffc0c0c0">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Cancel"
android:id="#+id/makeaTransferCancel"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="OK"
android:id="#+id/makeaTransferOk"/>
</RelativeLayout>
Please could someone help me

Try this code for the functionality you have mentioned above:
AlertDialog.Builder builder1 = new AlertDialog.Builder(context);
builder1.setMessage("Write your message here.");
builder1.setCancelable(true);
builder1.setPositiveButton("Ok",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
//put your code that needed to be executed when okay is clicked
dialog.cancel();
}
});
builder1.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert11 = builder1.create();
alert11.show();

AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
alertDialog.setTitle("Alert");
alertDialog.setMessage("your message ");
alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, "OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss(); //<-- change it with ur code
}
} );
alertDialog.setButton(AlertDialog.BUTTON_NEGATIVE, "Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
} );
alertDialog.show();

builder.setPositiveButton(text, new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
}).setNegativeButton(text, new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
}).create();

When button is clicked the Alert Dialog does not appear

I have an Alert Dialog that has an EditText where you input text and then add it to a ListView. Then on each item there is a Button I want to make that Button make an AlertDialog. The code below does not work.
This is my code...
public class DeleteRenameList extends Activity {
Button button;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
button = (Button)findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
AlertDialog.Builder alert=new AlertDialog.Builder(DeleteRenameList.this);
alert.setMessage("What do you want to do?");
alert.setPositiveButton("Rename", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
alert.setNegativeButton("Delete", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alert.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
}
});
AlertDialog ale=alert.create();
ale.show();
}
});
}}
Please Help.

Try this:
Make your custom dialog and present it:
//Make your class named CUstomDialogClass
import android.app.Activity;
import android.app.Dialog;
import android.os.Bundle;
import android.widget.Button;
public class CustomDialogClass extends Dialog{
public Activity c;
public Dialog d;
public Button yes, no;
public CustomDialogClass(Activity a) {
super(a);
// TODO Auto-generated constructor stub
this.c = a;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.customdialog);
}
}
In your MainActivity, place this code in your onCreate() method:
Button button = (Button)findViewById(R.id.yourid);
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
final CustomDialogClass dialog = new CustomDialogClass(MainActivity.this);
dialog.setTitle("Your Title");
dialog.show();
final Timer time = new Timer();
time.schedule(new TimerTask() {
#Override
public void run() {
dialog.dismiss();
}
}, 5000);
}
});
Finally, there's the layout for custom dialog which you can modify. I just gave an example:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Yout Title"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Your Message"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
And then you can add your listeners to it.
Hope this helps..:)

Your new onClickListener should be new View.onClickListener.
You should have something like this to start with:
Button button = (Button)findViewById(R.id.button1);
button.setOnClickListener(new View.onClickListener(){
#Override
public void onClick(View v){
AlertDialog.Builder builder = new Builder(this);
builder.setTitle("Are you sure you want to exit?")
.setIcon(R.drawable.ic_launcher)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.dismiss();
finish();
}
}).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.dismiss();
}
}).create().show();
}
});

How to call main activity's function from custom ArrayAdapter?

I've looked at a lot of similar questions and can't seem to get anything to work. I have a main class with a function like this that edits shows a dialog box then edits a List when a button is pressed.
public class EditPlayers extends SherlockFragmentActivity {
listPlayerNames.setAdapter(new EditPlayerAdapter(ctx,
R.layout.score_row_edit_player, listScoreEdit));
public void deletePlayer(final int position) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(
EditPlayers.this);
// Setting Dialog Title
alertDialog.setTitle("Delete Player");
// Setting Dialog Message
alertDialog.setMessage("Are you sure?");
// Setting Delete Button
alertDialog.setPositiveButton("Delete",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
listScoreEdit.remove(position);
updateListView();
}
});
// Setting Cancel Button
alertDialog.setNeutralButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
}
How do I access that function from the getView() in the adapter? Here's the XML for the row
<TextView
android:id="#+id/nameEdit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:paddingBottom="10dp"
android:paddingTop="10dp"
android:paddingLeft="10dp"
android:layout_weight="70"
android:text="Name"
android:textColor="#666666"
android:textSize="22sp"
android:textStyle="bold" >
</TextView>
<Button
android:id="#+id/deletePlayer"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="30"
android:text="Delete"
android:focusable="false" />
Here's the getView()
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
convertView = (LinearLayout) inflater.inflate(resource, null);
Score score = getItem(position);
TextView txtName = (TextView) convertView.findViewById(R.id.nameEdit);
txtName.setText(score.getName());
Button b = (Button)convertView.findViewById(R.id.deletePlayer);
b.setTag(position);
b.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//call function here
}
});
return convertView;
}
I'm totally lost at this point so any help would be appreciated. Thanks!

I would recommend providing an interface back to your activity that lets it know when that button is pressed. I would not recommend calling an activity's method from an ArrayAdapter. It is too tightly coupled.
Try something like this:
Your Activity
public class EditPlayers extends SherlockFragmentActivity implements EditPlayerAdapterCallback {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EditPlayerAdapter adapter = new EditPlayerAdapter(this,
R.layout.score_row_edit_player, listScoreEdit);
adapter.setCallback(this);
listPlayerNames.setAdapter(adapter);
}
private void deletePlayer(final int position) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(
EditPlayers.this);
// Setting Dialog Title
alertDialog.setTitle("Delete Player");
// Setting Dialog Message
alertDialog.setMessage("Are you sure?");
// Setting Delete Button
alertDialog.setPositiveButton("Delete",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
listScoreEdit.remove(position);
updateListView();
}
});
// Setting Cancel Button
alertDialog.setNeutralButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
#Override
public void deletePressed(int position) {
deletePlayer(position);
}
}
Adapter:
public class EditPlayerAdapter extends ArrayAdapter {
private EditPlayerAdapterCallback callback;
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
convertView = (LinearLayout) inflater.inflate(resource, null);
Score score = getItem(position);
TextView txtName = (TextView) convertView.findViewById(R.id.nameEdit);
txtName.setText(score.getName());
Button b = (Button)convertView.findViewById(R.id.deletePlayer);
b.setTag(position);
b.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if(callback != null) {
callback.deletePressed(position);
}
}
});
return convertView;
}
public void setCallback(EditPlayerAdapterCallback callback){
this.callback = callback;
}
public interface EditPlayerAdapterCallback {
public void deletePressed(int position);
}
}

Your EditPlayerAdapter gets a Context passed to it. Activity extends Context
If the Context passed is your EditPlayers and you store a class-scoped reference to that Context in your Adapter, you can then do:
((EditPlayers) yourContextVar).function();
Better yet, make an interface of some sort. It will help clarify and organise your code and it applies the same principle.