| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * 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.example.android.support.transition.widget; |
| |
| import com.example.android.support.transition.R; |
| |
| import android.os.Bundle; |
| import android.support.transition.Scene; |
| import android.support.transition.TransitionManager; |
| import android.support.v7.app.AppCompatActivity; |
| import android.support.v7.widget.Toolbar; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.ViewGroup; |
| import android.widget.FrameLayout; |
| |
| /** |
| * Base class for usages of the Transition API. |
| */ |
| abstract class TransitionUsageBase extends AppCompatActivity { |
| |
| protected Scene[] mScenes; |
| |
| private int mCurrentScene; |
| |
| abstract Scene[] setUpScenes(ViewGroup root); |
| |
| abstract void go(Scene scene); |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| setContentView(R.layout.basic_usage); |
| |
| // Retrieve the Toolbar from our content view, and set it as the action bar |
| Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); |
| setSupportActionBar(toolbar); |
| |
| FrameLayout root = (FrameLayout) findViewById(R.id.root); |
| mScenes = setUpScenes(root); |
| TransitionManager.go(mScenes[0]); |
| } |
| |
| @Override |
| public boolean onCreateOptionsMenu(Menu menu) { |
| getMenuInflater().inflate(R.menu.basic_usage, menu); |
| return true; |
| } |
| |
| @Override |
| public boolean onOptionsItemSelected(MenuItem item) { |
| switch (item.getItemId()) { |
| case R.id.action_toggle: |
| mCurrentScene = (mCurrentScene + 1) % mScenes.length; |
| go(mScenes[mCurrentScene]); |
| return true; |
| } |
| return false; |
| } |
| |
| } |