/*
* Copyright (C) 2014 The Android Open Source Project
*
* 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.google.android.glass.sample.apidemo.slider;
import com.google.android.glass.media.Sounds;
import com.google.android.glass.sample.apidemo.R;
import com.google.android.glass.sample.apidemo.card.CardAdapter;
import com.google.android.glass.widget.CardBuilder;
import com.google.android.glass.widget.CardScrollView;
import com.google.android.glass.widget.Slider;
import com.google.android.glass.widget.Slider.Determinate;
import com.google.android.glass.widget.Slider.GracePeriod;
import com.google.android.glass.widget.Slider.Indeterminate;
import com.google.android.glass.widget.Slider.Scroller;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ObjectAnimator;
import android.app.Activity;
import android.content.Context;
import android.media.AudioManager;
import android.os.Bundle;
import android.view.View;
import android.view.WindowManager;
import android.widget.AdapterView;
import java.util.ArrayList;
import java.util.List;
/**
* An activity that demonstrates the slider API.
*/
public final class SliderActivity extends Activity {
// Index of slider demo cards.
private static final int SCROLLER = 0;
private static final int DETERMINATE = 1;
private static final int GRACE_PERIOD = 2;
private static final int INDETERMINATE = 3;
private static final int MAX_SLIDER_VALUE = 5;
private static final long ANIMATION_DURATION_MILLIS = 5000;
private final GracePeriod.Listener mGracePeriodListener = new GracePeriod.Listener() {
@Override
public void onGracePeriodEnd() {
// Play a SUCCESS sound to indicate the end of the grace period.
AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
am.playSoundEffect(Sounds.SUCCESS);
mGracePeriod = null;
}
@Override
public void onGracePeriodCancel() {
// Play a DIMISS sound to indicate the cancellation of the grace period.
AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
am.playSoundEffect(Sounds.DISMISSED);
mGracePeriod = null;
}
};
private CardScrollView mCardScroller;
private Slider mSlider;
private Slider.Indeterminate mIndeterminate;
private Slider.GracePeriod mGracePeriod;
@Override
protected void onCreate(Bundle bundle) {
super.onCreate(bundle);
// Ensure screen stays on during demo.
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
mCardScroller = new CardScrollView(this);
mCardScroller.setAdapter(new CardAdapter(createCards(this)));
mCardScroller.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// Plays sound.
AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
am.playSoundEffect(Sounds.TAP);
processSliderRequest(position);
}
});
setContentView(mCardScroller);
mSlider = Slider.from(mCardScroller);
}
@Override
public void onBackPressed() {
// If the Grace Period is running, cancel it instead of finishing the Activity.
if (mGracePeriod != null) {
mGracePeriod.cancel();
} else {
super.onBackPressed();
}
}
@Override
protected void onResume() {
super.onResume();
mCardScroller.activate();
}
@Override
protected void onPause() {
mCardScroller.deactivate();
super.onPause();
}
/**
* Processes a request to show a slider.
*
* Starting a new Slider, regardless of its type, automatically hides any shown Slider.
*/
private void processSliderRequest(int position) {
switch (position) {
case SCROLLER:
Slider.Scroller scroller = mSlider.startScroller(MAX_SLIDER_VALUE, 0);
// Start an animation showing the different positions of the slider, the slider
// automatically hides after a short time of inactivity.
ObjectAnimator.ofFloat(scroller, "position", 0, MAX_SLIDER_VALUE)
.setDuration(ANIMATION_DURATION_MILLIS)
.start();
break;
case DETERMINATE:
final Slider.Determinate determinate =
mSlider.startDeterminate(MAX_SLIDER_VALUE, 0);
ObjectAnimator animator = ObjectAnimator.ofFloat(determinate, "position", 0,
MAX_SLIDER_VALUE);
// Hide the slider when the animation stops.
animator.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
determinate.hide();
}
});
// Start an animation showing the different positions of the slider.
animator.setDuration(ANIMATION_DURATION_MILLIS)
.start();
break;
case GRACE_PERIOD:
// Start the grace period slider and play a sound when one of the listener method
// gets fired.
mGracePeriod = mSlider.startGracePeriod(mGracePeriodListener);
break;
case INDETERMINATE:
// Toggle between showing/hiding the indeterminate slider.
if (mIndeterminate != null) {
mIndeterminate.hide();
mIndeterminate = null;
} else {
mIndeterminate = mSlider.startIndeterminate();
}
break;
}
}
/**
* Create a list of cards to display as activity content.
*/
private List<CardBuilder> createCards(Context context) {
ArrayList<CardBuilder> cards = new ArrayList<CardBuilder>();
cards.add(SCROLLER, new CardBuilder(context, CardBuilder.Layout.TEXT)
.setText(R.string.text_slider_scroller));
cards.add(DETERMINATE, new CardBuilder(context, CardBuilder.Layout.TEXT)
.setText(R.string.text_slider_determinate));
cards.add(GRACE_PERIOD, new CardBuilder(context, CardBuilder.Layout.TEXT)
.setText(R.string.text_slider_grace_period));
cards.add(INDETERMINATE, new CardBuilder(context, CardBuilder.Layout.TEXT)
.setText(R.string.text_slider_indeterminate));
return cards;
}
}