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SpeedTracker / Wearable / src / com.example.android.wearable.speedtracker /

SpeedPickerActivity.java

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/*
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 * Copyright (C) 2014 Google Inc. All Rights Reserved.
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *      http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.example.android.wearable.speedtracker;
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import android.app.Activity;
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import android.content.Intent;
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import android.os.Bundle;
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import android.support.wearable.view.WearableListView;
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import android.widget.TextView;
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import com.example.android.wearable.speedtracker.ui.SpeedPickerListAdapter;
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/**
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 * An activity that presents a list of speeds to user and allows user to pick one, to be used as
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 * the current speed limit.
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 */
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public class SpeedPickerActivity extends Activity implements WearableListView.ClickListener {
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    public static final String EXTRA_NEW_SPEED_LIMIT =
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            "com.example.android.wearable.speedtracker.extra.NEW_SPEED_LIMIT";
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    /* Speeds, in mph, that will be shown on the list */
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    private int[] speeds = {25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75};
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    @Override
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    protected void onCreate(Bundle savedInstanceState) {
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        super.onCreate(savedInstanceState);
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        setContentView(R.layout.speed_picker_activity);
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        final TextView header = (TextView) findViewById(R.id.header);
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        // Get the list component from the layout of the activity
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        WearableListView listView = (WearableListView) findViewById(R.id.wearable_list);
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        // Assign an adapter to the list
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        listView.setAdapter(new SpeedPickerListAdapter(this, speeds));
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        // Set a click listener
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        listView.setClickListener(this);
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        listView.addOnScrollListener(new WearableListView.OnScrollListener() {
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            @Override
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            public void onScroll(int i) {
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            }
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            @Override
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            public void onAbsoluteScrollChange(int i) {
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                // only scroll the header up from the base position, not down...
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                if (i > 0) {
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                    header.setY(-i);
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                }
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            }
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            @Override
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            public void onScrollStateChanged(int i) {
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            }
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            @Override
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            public void onCentralPositionChanged(int i) {
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            }
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        });
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    }
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    @Override
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    public void onClick(WearableListView.ViewHolder viewHolder) {
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        int newSpeedLimit = speeds[viewHolder.getPosition()];
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        Intent resultIntent = new Intent(Intent.ACTION_PICK);
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        resultIntent.putExtra(EXTRA_NEW_SPEED_LIMIT, newSpeedLimit);
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        setResult(RESULT_OK, resultIntent);
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        finish();
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    }
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    @Override
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    public void onTopEmptyRegionClick() {
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    }
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}
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