Ich versuche, eine benutzerdefinierte Zeitauswahl zu verwenden und die Auswahl dann von einem Fragment aus auszuführen. Dies ist der Code für den Zeitauswahldialog (TimePickerFragment.java):

package com.ravit.android.aroundtheclock;

import android.app.Dialog;
import android.app.DialogFragment;
import android.app.Fragment;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.text.format.DateFormat;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TimePicker;

import java.util.Calendar;

/**
 * A simple {@link Fragment} subclass.
 */
public class TimePickerFragment extends DialogFragment implements TimePickerDialog.OnTimeSetListener {


    public TimePickerFragment() {
        // Required empty public constructor
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // Use the current time as the default values for the picker

        final Calendar calendar = Calendar.getInstance();
        int hour = calendar.get(Calendar.HOUR_OF_DAY);
        int minute = calendar.get(Calendar.MINUTE);

        // Create a new instance of TimePickerDialog and return it
        return new TimePickerDialog(getActivity(), this, hour, minute,
                DateFormat.is24HourFormat(getActivity()));
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_time_picker, container, false);
    }

    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        // Do something with the time chosen by the user
    }
}

und dies ist der Code aus dem onCreateView-Fragment, der die Zeitauswahl (WorkdayFragment.java) anzeigt:

mButtonEnd = (Button)v.findViewById(R.id.end_workday);
mButtonEnd.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        TimePickerFragment dialog = new TimePickerFragment();
        dialog.show(getActivity().getFragmentManager(), DIALOG_TIME);
    }
});

Dies ist der Fehler, den ich beim Drücken der Taste erhalte. Beim Laden der Ansicht ist anscheinend ein Problem aufgetreten:

10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime: FATAL EXCEPTION: main
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime: Process: com.ravit.android.aroundtheclock, PID: 20325
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at com.android.internal.policy.PhoneWindow.requestFeature(PhoneWindow.java:317)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at com.android.internal.app.AlertController.installContent(AlertController.java:231)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.AlertDialog.onCreate(AlertDialog.java:423)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.Dialog.dispatchOnCreate(Dialog.java:394)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.Dialog.show(Dialog.java:295)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.DialogFragment.onStart(DialogFragment.java:499)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.Fragment.performStart(Fragment.java:2244)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1002)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.BackStackRecord.run(BackStackRecord.java:793)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1535)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.FragmentManagerImpl$1.run(FragmentManager.java:482)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.os.Handler.handleCallback(Handler.java:739)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:95)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:148)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5417)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
10-25 16:24:46.696 20325-20325/com.ravit.android.aroundtheclock E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Meine Vermutung ist, dass es ein Problem mit der Art und Weise gibt, wie der Zeitauswahlcode geschrieben wird, denn wenn ich ihn durch den Datumsauswahlcode ersetze, läuft alles ohne Fehler.

Ich habe versucht, den requestFeature () - Fehler anhand anderer Antworten zu diesem Thema ohne Fortschritt zu beheben.

Alle Ratschläge, wie Sie von hier aus fortfahren, wären sehr hilfreich. Vielen Dank