Java tutorial
/* * Copyright (c) 2015 Jonas Kalderstam. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package cn.studyjams.s2.sj0132.bowenyan.mygirlfriend.nononsenseapps.notepad.ui.common; import android.database.Cursor; import android.databinding.DataBindingUtil; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.annotation.Nullable; import android.support.v4.app.DialogFragment; import android.support.v4.app.LoaderManager.LoaderCallbacks; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.text.Editable; import android.text.TextWatcher; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Toast; import cn.studyjams.s2.sj0132.bowenyan.mygirlfriend.R; import cn.studyjams.s2.sj0132.bowenyan.mygirlfriend.databinding.FragmentDialogEditlistBinding; import cn.studyjams.s2.sj0132.bowenyan.mygirlfriend.nononsenseapps.notepad.data.model.sql.TaskList; import cn.studyjams.s2.sj0132.bowenyan.mygirlfriend.nononsenseapps.notepad.ui.base.DialogConfirmBase.DialogConfirmedListener; public class DialogEditList extends DialogFragment { static final String LIST_ID = "list_id"; private TaskList mTaskList; private EditListDialogListener listener; private FragmentDialogEditlistBinding binding; public DialogEditList() { } /** * Use to create new list */ public static DialogEditList getInstance() { DialogEditList dialog = new DialogEditList(); dialog.setArguments(Bundle.EMPTY); return dialog; } public static DialogEditList getInstance(final long listid) { DialogEditList dialog = new DialogEditList(); Bundle args = new Bundle(); args.putLong(LIST_ID, listid); dialog.setArguments(args); return dialog; } public void setListener(final EditListDialogListener listener) { this.listener = listener; } @Nullable @Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { binding = DataBindingUtil.inflate(inflater, R.layout.fragment_dialog_editlist, container, true); return binding.getRoot(); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); setup(); } void setup() { // New item hides delete button and disables OK initially if (getArguments().getLong(LIST_ID, -1) < 1) { binding.deleteButton.setVisibility(View.GONE); binding.buttons.dialogYes.setEnabled(false); } if (getArguments().getLong(LIST_ID, -1) > 0) { getDialog().setTitle(R.string.menu_managelists); getLoaderManager().restartLoader(0, null, new LoaderCallbacks<Cursor>() { @Override public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) { return new CursorLoader(getActivity(), TaskList.getUri(getArguments().getLong(LIST_ID, -1)), TaskList.Columns.FIELDS, null, null, null); } @Override public void onLoadFinished(Loader<Cursor> arg0, Cursor c) { if (c.moveToFirst()) { mTaskList = new TaskList(c); fillViews(); } // Don't need it anymore getLoaderManager().destroyLoader(0); } @Override public void onLoaderReset(Loader<Cursor> arg0) { } }); } else { getDialog().setTitle(R.string.menu_createlist); mTaskList = new TaskList(); } binding.titleField.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { } @Override public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) { } @Override public void afterTextChanged(Editable editable) { binding.buttons.dialogYes.setEnabled(editable.length() > 0); } }); binding.deleteButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { deleteClicked(); } }); binding.buttons.dialogNo.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { dismiss(); } }); binding.buttons.dialogYes.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { okClicked(); } }); } void fillViews() { binding.titleField.setText(mTaskList.title); // Check if this is the default list final long defList = Long.parseLong(PreferenceManager.getDefaultSharedPreferences(getActivity()) .getString(getString(R.string.pref_defaultlist), "-1")); if (mTaskList._id > 0 && defList == mTaskList._id) { binding.defaultListBox.setChecked(true); } } void deleteClicked() { if (mTaskList._id > 0) { DialogDeleteList.showDialog(getFragmentManager(), mTaskList._id, new DialogConfirmedListener() { @Override public void onConfirm() { dismiss(); } }); } } void okClicked() { Toast.makeText(getActivity(), R.string.saved, Toast.LENGTH_SHORT).show(); mTaskList.title = binding.titleField.getText().toString(); mTaskList.save(getActivity()); if (mTaskList._id > 0 && binding.defaultListBox.isChecked()) { PreferenceManager.getDefaultSharedPreferences(getActivity()).edit() .putLong(getString(R.string.pref_defaultstartlist), mTaskList._id) .putString(getString(R.string.pref_defaultlist), Long.toString(mTaskList._id)).commit(); } else if (mTaskList._id > 0) { // Remove pref if it is the default list currently final long defList = Long.parseLong(PreferenceManager.getDefaultSharedPreferences(getActivity()) .getString(getString(R.string.pref_defaultlist), "-1")); final long defStartList = PreferenceManager.getDefaultSharedPreferences(getActivity()) .getLong(getString(R.string.pref_defaultstartlist), -1); if (defList == mTaskList._id) { PreferenceManager.getDefaultSharedPreferences(getActivity()).edit() .remove(getString(R.string.pref_defaultlist)).commit(); } if (defStartList == mTaskList._id) { PreferenceManager.getDefaultSharedPreferences(getActivity()).edit() .remove(getString(R.string.pref_defaultstartlist)).commit(); } } if (mTaskList._id > 0 && listener != null) { listener.onFinishEditDialog(mTaskList._id); } // TODO save items if necessary this.dismiss(); } public interface EditListDialogListener { void onFinishEditDialog(long id); } }