Java tutorial
/* Copyright 2016 COMP231 Team 6 - Anjali Macwan * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.anjalimacwan.fragment; import android.annotation.TargetApi; import android.app.ActivityManager; import android.content.Context; import android.content.SharedPreferences; import android.content.res.Configuration; import android.os.Build; import android.os.Bundle; import android.support.design.widget.FloatingActionButton; import android.support.v4.app.DialogFragment; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentTransaction; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.LinearLayout; import android.widget.Toast; import com.anjalimacwan.R; import com.anjalimacwan.fragment.dialog.AboutDialogFragment; public class WelcomeFragment extends Fragment { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.fragment_welcome_alt, container, false); } @TargetApi(Build.VERSION_CODES.LOLLIPOP) @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); // Set values setRetainInstance(true); setHasOptionsMenu(true); // Animate elevation change if (getActivity().findViewById(R.id.layoutMain).getTag().equals("main-layout-large") && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { LinearLayout noteViewEdit = (LinearLayout) getActivity().findViewById(R.id.noteViewEdit); LinearLayout noteList = (LinearLayout) getActivity().findViewById(R.id.noteList); noteViewEdit.animate().z(0f); if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) noteList.animate().z(getResources().getDimensionPixelSize(R.dimen.note_list_elevation_land)); else noteList.animate().z(getResources().getDimensionPixelSize(R.dimen.note_list_elevation)); } } @Override public void onStart() { super.onStart(); // Read preferences SharedPreferences prefMain = getActivity().getPreferences(Context.MODE_PRIVATE); // Before we do anything else, check for a saved draft; if one exists, load it if (prefMain.getLong("draft-name", 0) != 0) { Bundle bundle = new Bundle(); bundle.putString("filename", "draft"); Fragment fragment = new NoteEditFragment(); fragment.setArguments(bundle); // Add NoteEditFragment getFragmentManager().beginTransaction().replace(R.id.noteViewEdit, fragment, "NoteEditFragment") .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_CLOSE).commit(); } else { // Change window title String title = getResources().getString(R.string.app_name); getActivity().setTitle(title); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { ActivityManager.TaskDescription taskDescription = new ActivityManager.TaskDescription(title, null, ContextCompat.getColor(getActivity(), R.color.primary)); getActivity().setTaskDescription(taskDescription); } // Don't show the Up button in the action bar, and disable the button ((AppCompatActivity) getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(false); ((AppCompatActivity) getActivity()).getSupportActionBar().setHomeButtonEnabled(false); // Floating action button FloatingActionButton floatingActionButton = (FloatingActionButton) getActivity() .findViewById(R.id.button_floating_action_welcome); floatingActionButton.setImageResource(R.drawable.ic_action_new); floatingActionButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Bundle bundle = new Bundle(); bundle.putString("filename", "new"); Fragment fragment = new NoteEditFragment(); fragment.setArguments(bundle); // Add NoteEditFragment getFragmentManager().beginTransaction().replace(R.id.noteViewEdit, fragment, "NoteEditFragment") .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_CLOSE).commit(); } }); } } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.main, menu); } @TargetApi(Build.VERSION_CODES.KITKAT) @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle presses on the action bar items switch (item.getItemId()) { /* case R.id.action_settings: Intent intentSettings = new Intent(getActivity(), SettingsActivity.class); startActivity(intentSettings); return true; case R.id.action_import: Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT); intent.addCategory(Intent.CATEGORY_OPENABLE); intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true); intent.putExtra(Intent.EXTRA_MIME_TYPES, new String[] {"text/plain", "text/html", "text/x-markdown"}); intent.setType("*//*//"); try { getActivity().startActivityForResult(intent, 42); } catch (ActivityNotFoundException e) { showToast(R.string.error_importing_notes); } return true;*/ case R.id.action_about: DialogFragment aboutFragment = new AboutDialogFragment(); aboutFragment.show(getFragmentManager(), "about"); return true; default: return super.onOptionsItemSelected(item); } } public void dispatchKeyShortcutEvent(int keyCode) { switch (keyCode) { // CTRL+N: New Note case KeyEvent.KEYCODE_N: Bundle bundle = new Bundle(); bundle.putString("filename", "new"); Fragment fragment = new NoteEditFragment(); fragment.setArguments(bundle); // Add NoteEditFragment getFragmentManager().beginTransaction().replace(R.id.noteViewEdit, fragment, "NoteEditFragment") .setTransition(FragmentTransaction.TRANSIT_FRAGMENT_CLOSE).commit(); break; } } public void onBackPressed() { getActivity().finish(); } public void showFab() { FloatingActionButton floatingActionButton = (FloatingActionButton) getActivity() .findViewById(R.id.button_floating_action_welcome); floatingActionButton.show(); } public void hideFab() { FloatingActionButton floatingActionButton = (FloatingActionButton) getActivity() .findViewById(R.id.button_floating_action_welcome); floatingActionButton.hide(); } private void showToast(int message) { Toast toast = Toast.makeText(getActivity(), getResources().getString(message), Toast.LENGTH_SHORT); toast.show(); } }