I had been facing exactly the same hurdle.
Here is what i did after a research.
activity_main.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:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:weightSum="1"
tools:context="com.example.sinnaren.simply.MainActivity">
<Button
android:id="@+id/button_add_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="Add a title"
android:textAllCaps="false"/>
</LinearLayout>
dialog_add_title_list.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/dialog_chapter"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<EditText
android:id="@+id/edit_add_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="title name"
android:inputType="textCapWords"
android:textAllCaps="false" />
<EditText
android:id="@+id/edit_add_desc"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="title description"
android:inputType="textCapSentences"
android:textAllCaps="false" />
</LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity implements myDialogFragment.MyDialogListener {
private Button buttonAdd;
private myDialogFragment dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
dialog = new myDialogFragment();
buttonAdd = (Button)findViewById(R.id.button_add_title);
buttonAdd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i("MainActivity", "onClick: going to show dialog");
dialog.show(getSupportFragmentManager(), "myCustomAlert !!");
}
});
}
@Override
public void onDialogPositiveClick(DialogFragment dialog, String name, String desc) {
Toast.makeText(getApplicationContext(), "name :" + name + "description :" + desc, Toast.LENGTH_SHORT).show();
}
@Override
public void onDialogNegativeClick(DialogFragment dialog) {
Toast.makeText(getApplicationContext(), "Cancel clicked", Toast.LENGTH_SHORT).show();
}
}
myDialogFragment.java
public class myDialogFragment extends DialogFragment {
private Dialog alert;
MyDialogListener dialogListener;
public interface MyDialogListener {
public void onDialogPositiveClick(DialogFragment dialog, String namel, String desc);
public void onDialogNegativeClick(DialogFragment dialog);
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
dialogListener = (MyDialogListener)context;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
Log.w("onCreateDialog", "onCreateDialog: onCreateDialog invoked");
AlertDialog.Builder alertDialogBuider = new AlertDialog.Builder(getActivity());
alertDialogBuider.setTitle("Add a Title");
LayoutInflater inflater = getActivity().getLayoutInflater();
final View dialogView = inflater.inflate(R.layout.dialog_add_title_list, null);
alertDialogBuider.setView(dialogView);
alertDialogBuider.setPositiveButton("Add", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
EditText textChapterName = (EditText)dialogView.findViewById(R.id.edit_add_title);
EditText textChapterDesc = (EditText)dialogView.findViewById(R.id.edit_add_desc);
dialogListener.onDialogPositiveClick(myDialogFragment.this,
textChapterName.getText().toString(),
textChapterDesc.getText().toString());
}
});
alertDialogBuider.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialogListener.onDialogNegativeClick(myDialogFragment.this);
}
});
return alertDialogBuider.create();
}
@Override
public void onDismiss(DialogInterface dialog) {
super.onDismiss(dialog);
Toast.makeText(getActivity(), "Dialog: onDismiss", Toast.LENGTH_SHORT).show();
}
}
When using the support library, be sure that you import android.support.v4.app.DialogFragment class and not android.app.DialogFragment.
dialog created