1 /*
2  * Copyright (C) 2013 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.android.transitiontests;
17 
18 import android.app.Activity;
19 import android.os.Bundle;
20 import android.view.View;
21 import android.view.ViewGroup;
22 import android.transition.ChangeBounds;
23 import android.transition.TransitionManager;
24 import android.widget.Button;
25 
26 import static android.widget.RelativeLayout.ALIGN_PARENT_LEFT;
27 import static android.widget.RelativeLayout.ALIGN_PARENT_RIGHT;
28 import static android.widget.RelativeLayout.LayoutParams;
29 
30 public class InstanceTargets extends Activity {
31 
32     ViewGroup mSceneRoot;
33     static int mCurrentScene;
34 
35     @Override
onCreate(Bundle savedInstanceState)36     public void onCreate(Bundle savedInstanceState) {
37         super.onCreate(savedInstanceState);
38         setContentView(R.layout.instance_targets);
39 
40         View container = findViewById(R.id.container);
41         mSceneRoot = (ViewGroup) container;
42     }
43 
sendMessage(final View view)44     public void sendMessage(final View view) {
45         TransitionManager.beginDelayedTransition(mSceneRoot, new ChangeBounds().addTarget(view));
46         for (int i = 0; i < mSceneRoot.getChildCount(); ++i) {
47             Button button = (Button) mSceneRoot.getChildAt(i);
48             LayoutParams params = (LayoutParams) button.getLayoutParams();
49             int rules[] = params.getRules();
50             if (rules[ALIGN_PARENT_RIGHT] != 0) {
51                 params.removeRule(ALIGN_PARENT_RIGHT);
52                 params.addRule(ALIGN_PARENT_LEFT);
53             } else {
54                 params.removeRule(ALIGN_PARENT_LEFT);
55                 params.addRule(ALIGN_PARENT_RIGHT);
56             }
57             button.setLayoutParams(params);
58         }
59     }
60 }
61