1 /*
2  * Copyright (C) 2014 Google Inc. All Rights Reserved.
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.speedtracker;
18 
19 import android.app.Activity;
20 import android.content.Intent;
21 import android.os.Bundle;
22 import android.support.wearable.view.WearableListView;
23 import android.widget.TextView;
24 
25 import com.example.android.wearable.speedtracker.ui.SpeedPickerListAdapter;
26 
27 /**
28  * An activity that presents a list of speeds to user and allows user to pick one, to be used as
29  * the current speed limit.
30  */
31 public class SpeedPickerActivity extends Activity implements WearableListView.ClickListener {
32 
33     public static final String EXTRA_NEW_SPEED_LIMIT =
34             "com.example.android.wearable.speedtracker.extra.NEW_SPEED_LIMIT";
35 
36     /* Speeds, in mph, that will be shown on the list */
37     private int[] speeds = {25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75};
38 
39     @Override
onCreate(Bundle savedInstanceState)40     protected void onCreate(Bundle savedInstanceState) {
41         super.onCreate(savedInstanceState);
42         setContentView(R.layout.speed_picker_activity);
43 
44         final TextView header = (TextView) findViewById(R.id.header);
45 
46         // Get the list component from the layout of the activity
47         WearableListView listView = (WearableListView) findViewById(R.id.wearable_list);
48 
49         // Assign an adapter to the list
50         listView.setAdapter(new SpeedPickerListAdapter(this, speeds));
51 
52         // Set a click listener
53         listView.setClickListener(this);
54 
55         listView.addOnScrollListener(new WearableListView.OnScrollListener() {
56             @Override
57             public void onScroll(int i) {
58             }
59 
60             @Override
61             public void onAbsoluteScrollChange(int i) {
62                 // only scroll the header up from the base position, not down...
63                 if (i > 0) {
64                     header.setY(-i);
65                 }
66             }
67 
68             @Override
69             public void onScrollStateChanged(int i) {
70             }
71 
72             @Override
73             public void onCentralPositionChanged(int i) {
74             }
75         });
76     }
77 
78     @Override
onClick(WearableListView.ViewHolder viewHolder)79     public void onClick(WearableListView.ViewHolder viewHolder) {
80 
81         int newSpeedLimit = speeds[viewHolder.getPosition()];
82 
83         Intent resultIntent = new Intent(Intent.ACTION_PICK);
84         resultIntent.putExtra(EXTRA_NEW_SPEED_LIMIT, newSpeedLimit);
85         setResult(RESULT_OK, resultIntent);
86 
87         finish();
88     }
89 
90     @Override
onTopEmptyRegionClick()91     public void onTopEmptyRegionClick() {
92     }
93 }
94