| /* |
| Copyright 2017 David Morrissey |
| |
| 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.davemorrissey.labs.subscaleview.sample; |
| |
| import android.app.ActionBar; |
| import android.os.Bundle; |
| import android.support.annotation.Nullable; |
| import android.support.v4.app.FragmentActivity; |
| import android.view.MenuItem; |
| |
| import java.util.List; |
| |
| public abstract class AbstractFragmentsActivity extends FragmentActivity { |
| |
| private static final String BUNDLE_PAGE = "page"; |
| |
| private int page; |
| |
| private final int title; |
| private final int layout; |
| private final List<Page> notes; |
| |
| protected abstract void onPageChanged(int page); |
| |
| protected AbstractFragmentsActivity(int title, int layout, List<Page> notes) { |
| this.title = title; |
| this.layout = layout; |
| this.notes = notes; |
| } |
| |
| @Override |
| protected void onCreate(@Nullable Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| setContentView(layout); |
| ActionBar actionBar = getActionBar(); |
| if (actionBar != null) { |
| actionBar.setTitle(getString(title)); |
| actionBar.setDisplayHomeAsUpEnabled(true); |
| } |
| if (savedInstanceState != null && savedInstanceState.containsKey(BUNDLE_PAGE)) { |
| page = savedInstanceState.getInt(BUNDLE_PAGE); |
| } |
| } |
| |
| @Override |
| protected void onResume() { |
| super.onResume(); |
| updateNotes(); |
| } |
| |
| @Override |
| protected void onSaveInstanceState(Bundle outState) { |
| super.onSaveInstanceState(outState); |
| outState.putInt(BUNDLE_PAGE, page); |
| } |
| |
| @Override |
| public boolean onOptionsItemSelected(MenuItem item) { |
| finish(); |
| return true; |
| } |
| |
| public void next() { |
| page++; |
| updateNotes(); |
| } |
| |
| public void previous() { |
| page--; |
| updateNotes(); |
| } |
| |
| private void updateNotes() { |
| if (page > notes.size() - 1) { |
| return; |
| } |
| ActionBar actionBar = getActionBar(); |
| if (actionBar != null) { |
| actionBar.setSubtitle(notes.get(page).getSubtitle()); |
| } |
| onPageChanged(page); |
| } |
| |
| } |