1 /*
2  * Copyright (C) 2014 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 
17 package com.example.android.wearable.gridviewpager;
18 
19 import android.app.Activity;
20 import android.content.res.Resources;
21 import android.os.Bundle;
22 import android.support.wearable.view.DotsPageIndicator;
23 import android.support.wearable.view.GridViewPager;
24 import android.view.View;
25 import android.view.View.OnApplyWindowInsetsListener;
26 import android.view.WindowInsets;
27 
28 public class MainActivity extends Activity {
29 
30     @Override
onCreate(Bundle savedInstanceState)31     protected void onCreate(Bundle savedInstanceState) {
32         super.onCreate(savedInstanceState);
33         setContentView(R.layout.activity_main);
34         final Resources res = getResources();
35         final GridViewPager pager = (GridViewPager) findViewById(R.id.pager);
36         pager.setOnApplyWindowInsetsListener(new OnApplyWindowInsetsListener() {
37             @Override
38             public WindowInsets onApplyWindowInsets(View v, WindowInsets insets) {
39                 // Adjust page margins:
40                 //   A little extra horizontal spacing between pages looks a bit
41                 //   less crowded on a round display.
42                 final boolean round = insets.isRound();
43                 int rowMargin = res.getDimensionPixelOffset(R.dimen.page_row_margin);
44                 int colMargin = res.getDimensionPixelOffset(round ?
45                         R.dimen.page_column_margin_round : R.dimen.page_column_margin);
46                 pager.setPageMargins(rowMargin, colMargin);
47 
48                 // GridViewPager relies on insets to properly handle
49                 // layout for round displays. They must be explicitly
50                 // applied since this listener has taken them over.
51                 pager.onApplyWindowInsets(insets);
52                 return insets;
53             }
54         });
55         pager.setAdapter(new SampleGridPagerAdapter(this, getFragmentManager()));
56         DotsPageIndicator dotsPageIndicator = (DotsPageIndicator) findViewById(R.id.page_indicator);
57         dotsPageIndicator.setPager(pager);
58     }
59 }
60