Java tutorial
/* * Catroid: An on-device visual programming system for Android devices * Copyright (C) 2010-2014 The Catrobat Team * (<http://developer.fyp14017.hku/credits>) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * An additional term exception under section 7 of the GNU Affero * General Public License, version 3, is available at * http://developer.fyp14017.hku/license_additional_term * * 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.hku/licenses/>. */ package hku.fyp14017.blencode.ui.dialogs; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnShowListener; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.preference.PreferenceManager; import android.support.v4.app.DialogFragment; import android.text.Editable; import android.text.TextWatcher; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup.LayoutParams; import android.view.WindowManager; import android.view.inputmethod.InputMethodManager; import android.widget.Button; import android.widget.CheckBox; import android.widget.EditText; import hku.fyp14017.blencode.ProjectManager; import hku.fyp14017.blencode.R; import hku.fyp14017.blencode.common.Constants; import hku.fyp14017.blencode.ui.ProjectActivity; import hku.fyp14017.blencode.utils.Utils; import java.io.IOException; import hku.fyp14017.blencode.ProjectManager; import hku.fyp14017.blencode.common.Constants; public class NewProjectDialog extends DialogFragment { public static final String DIALOG_FRAGMENT_TAG = "dialog_new_project"; public static final String SHARED_PREFERENCES_EMPTY_PROJECT = "shared_preferences_empty_project"; private static final String TAG = NewProjectDialog.class.getSimpleName(); private EditText newProjectEditText; private Dialog newProjectDialog; private CheckBox emptyProjectCheckBox; private SharedPreferences sharedPreferences; private boolean openendFromProjectList = false; @Override public Dialog onCreateDialog(Bundle savedInstanceState) { View dialogView = LayoutInflater.from(getActivity()) .inflate(hku.fyp14017.blencode.R.layout.dialog_new_project, null); newProjectEditText = (EditText) dialogView.findViewById(hku.fyp14017.blencode.R.id.project_name_edittext); newProjectEditText.setText(""); newProjectDialog = new AlertDialog.Builder(getActivity()).setView(dialogView) .setTitle(hku.fyp14017.blencode.R.string.new_project_dialog_title) .setPositiveButton(hku.fyp14017.blencode.R.string.ok, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }).setNegativeButton(hku.fyp14017.blencode.R.string.cancel_button, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }) .create(); newProjectDialog.setCanceledOnTouchOutside(true); newProjectDialog.getWindow().setLayout(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); newProjectDialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE); newProjectDialog.setOnShowListener(new OnShowListener() { @Override public void onShow(DialogInterface dialog) { InputMethodManager inputManager = (InputMethodManager) getActivity() .getSystemService(Context.INPUT_METHOD_SERVICE); inputManager.showSoftInput(newProjectEditText, InputMethodManager.SHOW_IMPLICIT); ((AlertDialog) newProjectDialog).getButton(Dialog.BUTTON_POSITIVE).setEnabled(false); newProjectEditText.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void afterTextChanged(Editable s) { if (newProjectEditText.length() == 0) { ((AlertDialog) newProjectDialog).getButton(Dialog.BUTTON_POSITIVE).setEnabled(false); } else { ((AlertDialog) newProjectDialog).getButton(Dialog.BUTTON_POSITIVE).setEnabled(true); } } }); Button positiveButton = ((AlertDialog) dialog).getButton(AlertDialog.BUTTON_POSITIVE); positiveButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { handleOkButtonClick(); } }); } }); sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity()); boolean shouldBeEmpty = sharedPreferences.getBoolean(SHARED_PREFERENCES_EMPTY_PROJECT, false); emptyProjectCheckBox = (CheckBox) dialogView .findViewById(hku.fyp14017.blencode.R.id.project_empty_checkbox); emptyProjectCheckBox.setChecked(shouldBeEmpty); return newProjectDialog; } protected void handleOkButtonClick() { String projectName = newProjectEditText.getText().toString().trim(); boolean shouldBeEmpty = emptyProjectCheckBox.isChecked(); if (projectName.isEmpty()) { Utils.showErrorDialog(getActivity(), hku.fyp14017.blencode.R.string.error_no_name_entered); return; } if (Utils.checkIfProjectExistsOrIsDownloadingIgnoreCase(projectName)) { Utils.showErrorDialog(getActivity(), hku.fyp14017.blencode.R.string.error_project_exists); return; } try { ProjectManager.getInstance().initializeNewProject(projectName, getActivity(), shouldBeEmpty); } catch (IllegalArgumentException illegalArgumentException) { Utils.showErrorDialog(getActivity(), hku.fyp14017.blencode.R.string.error_project_exists); return; } catch (IOException ioException) { Utils.showErrorDialog(getActivity(), hku.fyp14017.blencode.R.string.error_new_project); Log.e(TAG, Log.getStackTraceString(ioException)); dismiss(); return; } sharedPreferences.edit().putBoolean(SHARED_PREFERENCES_EMPTY_PROJECT, shouldBeEmpty).commit(); Utils.saveToPreferences(getActivity(), Constants.PREF_PROJECTNAME_KEY, projectName); Intent intent = new Intent(getActivity(), ProjectActivity.class); intent.putExtra(Constants.PROJECTNAME_TO_LOAD, projectName); if (isOpenendFromProjectList()) { intent.putExtra(Constants.PROJECT_OPENED_FROM_PROJECTS_LIST, true); } getActivity().startActivity(intent); dismiss(); } public boolean isOpenendFromProjectList() { return openendFromProjectList; } public void setOpenendFromProjectList(boolean openendFromProjectList) { this.openendFromProjectList = openendFromProjectList; } }