Editor

SpeedPickerLayout.java

/*
 * Copyright (C) 2014 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.android.wearable.speedtracker.ui;

import android.content.Context;
import android.graphics.drawable.GradientDrawable;
import android.support.wearable.view.WearableListView;
import android.util.AttributeSet;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.example.android.wearable.speedtracker.R;

/**
 * A simple extension of the {@link android.widget.LinearLayout} to represent a single item in a
 * {@link android.support.wearable.view.WearableListView}.
 */
public class SpeedPickerLayout extends LinearLayout
        implements WearableListView.OnCenterProximityListener {

private final float mFadedTextAlpha;
    private final int mFadedCircleColor;
    private final int mChosenCircleColor;
    private ImageView mCircle;
    private TextView mName;

public SpeedPickerLayout(Context context) {
        this(context, null);
    }

public SpeedPickerLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

public SpeedPickerLayout(Context context, AttributeSet attrs,
            int defStyle) {
        super(context, attrs, defStyle);
        mFadedTextAlpha = getResources()
                .getInteger(R.integer.action_text_faded_alpha) / 100f;
        mFadedCircleColor = getResources().getColor(R.color.grey);
        mChosenCircleColor = getResources().getColor(R.color.blue);
    }

// Get references to the icon and text in the item layout definiton
    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        mCircle = (ImageView) findViewById(R.id.circle);
        mName = (TextView) findViewById(R.id.name);
    }

@Override
    public void onCenterPosition(boolean animate) {
        mName.setAlpha(1f);
        ((GradientDrawable) mCircle.getDrawable()).setColor(mChosenCircleColor);
    }

@Override
    public void onNonCenterPosition(boolean animate) {
        ((GradientDrawable) mCircle.getDrawable()).setColor(mFadedCircleColor);
        mName.setAlpha(mFadedTextAlpha);

}
}