SpeedPickerLayout.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.ui;
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import android.content.Context;
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import android.graphics.drawable.GradientDrawable;
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import android.support.wearable.view.WearableListView;
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import android.util.AttributeSet;
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import android.widget.ImageView;
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import android.widget.LinearLayout;
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import android.widget.TextView;
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import com.example.android.wearable.speedtracker.R;
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/**
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 * A simple extension of the {@link android.widget.LinearLayout} to represent a single item in a
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 * {@link android.support.wearable.view.WearableListView}.
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 */
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public class SpeedPickerLayout extends LinearLayout
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        implements WearableListView.OnCenterProximityListener {
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    private final float mFadedTextAlpha;
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    private final int mFadedCircleColor;
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    private final int mChosenCircleColor;
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    private ImageView mCircle;
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    private TextView mName;
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    public SpeedPickerLayout(Context context) {
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        this(context, null);
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    }
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    public SpeedPickerLayout(Context context, AttributeSet attrs) {
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        this(context, attrs, 0);
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    }
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    public SpeedPickerLayout(Context context, AttributeSet attrs,
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            int defStyle) {
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        super(context, attrs, defStyle);
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        mFadedTextAlpha = getResources()
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                .getInteger(R.integer.action_text_faded_alpha) / 100f;
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        mFadedCircleColor = getResources().getColor(R.color.grey);
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        mChosenCircleColor = getResources().getColor(R.color.blue);
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    }
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    // Get references to the icon and text in the item layout definiton
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    @Override
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    protected void onFinishInflate() {
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        super.onFinishInflate();
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        mCircle = (ImageView) findViewById(R.id.circle);
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        mName = (TextView) findViewById(R.id.name);
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    }
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    @Override
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    public void onCenterPosition(boolean animate) {
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        mName.setAlpha(1f);
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        ((GradientDrawable) mCircle.getDrawable()).setColor(mChosenCircleColor);
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    }
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    @Override
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    public void onNonCenterPosition(boolean animate) {
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        ((GradientDrawable) mCircle.getDrawable()).setColor(mFadedCircleColor);
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        mName.setAlpha(mFadedTextAlpha);
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    }
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}
Aug	SEP	Oct
	05
2014	2015	2016
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SpeedPickerLayout.java
