Android Open Source - Notepad Welcome Fragment

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License

The source code is released under:

Apache License

Java Source Code

/* Copyright 2014 Braden Farmer
 */*  w w w .java 2 s .com*/
 * 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.farmerbb.notepad;

import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Build;
import android.os.Bundle;
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 com.melnykov.fab.FloatingActionButton;

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);
  }

  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    // Set values
    setRetainInstance(true);
    setHasOptionsMenu(true);
  }

  @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_OPEN)
                    .commit();
        } else {
            // Change window title
            getActivity().setTitle(getResources().getString(R.string.app_name));

            // Don't show the Up button in the action bar, and disable the button
            getActivity().getActionBar().setDisplayHomeAsUpEnabled(false);
            getActivity().getActionBar().setHomeButtonEnabled(false);

            // Floating action button
            FloatingActionButton floatingActionButton = (FloatingActionButton) getActivity().findViewById(R.id.button_floating_action_welcome);
            floatingActionButton.hide(false);

            if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                floatingActionButton.show();
                floatingActionButton.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        hideFab();

                        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_OPEN)
                                .commit();
                    }
                });
            }
        }
  }

  @Override
  public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.main, menu);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // Handle presses on the action bar items
    switch (item.getItemId()) {
        // New button
      case R.id.action_new:
        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_OPEN)
          .commit();

        return true;

        // Settings button
      case R.id.action_settings:
        Intent intentSettings = new Intent (getActivity(), SettingsActivity.class);
        startActivity(intentSettings);
        return true;            
      default:
        return super.onOptionsItemSelected(item);
    }
  }
  
  public void dispatchKeyShortcutEvent(int keyCode) {
    switch(keyCode) {
        // CTRL+N: New Note
      case KeyEvent.KEYCODE_N:
        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
          hideFab();
        
        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_OPEN)
          .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();
    }
}

Java Source Code List

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