实例介绍
/*
* Pedometer - Android App
* Copyright (C) 2009 Levente Bagi
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package name.bagi.levente.pedometer;
import com.google.tts.TTS;
/**
* Calculates and displays pace (steps / minute), handles input of desired pace,
* notifies user if he/she has to go faster or slower.
*
* Uses {@link PaceNotifier}, calculates speed as product of pace and step length.
*
* @author Levente Bagi
*/
public class SpeedNotifier implements PaceNotifier.Listener, SpeakingTimer.Listener {
public interface Listener {
public void valueChanged(float value);
public void passValue();
}
private Listener mListener;
int mCounter = 0;
float mSpeed = 0;
boolean mIsMetric;
float mStepLength;
PedometerSettings mSettings;
TTS mTts;
/** Desired speed, adjusted by the user */
float mDesiredSpeed;
/** Should we speak? */
boolean mShouldTellFasterslower;
boolean mShouldTellSpeed;
/** When did the TTS speak last time */
private long mSpokenAt = 0;
public SpeedNotifier(Listener listener, PedometerSettings settings, TTS tts) {
mListener = listener;
mTts = tts;
mSettings = settings;
mDesiredSpeed = mSettings.getDesiredSpeed();
reloadSettings();
}
public void setSpeed(float speed) {
mSpeed = speed;
notifyListener();
}
public void reloadSettings() {
mIsMetric = mSettings.isMetric();
mStepLength = mSettings.getStepLength();
mShouldTellSpeed = mSettings.shouldTellSpeed();
mShouldTellFasterslower =
mSettings.shouldTellFasterslower()
&& mSettings.getMaintainOption() == PedometerSettings.M_SPEED;
notifyListener();
}
public void setTts(TTS tts) {
mTts = tts;
}
public void setDesiredSpeed(float desiredSpeed) {
mDesiredSpeed = desiredSpeed;
}
private void notifyListener() {
mListener.valueChanged(mSpeed);
}
@Override
public void paceChanged(int value) {
if (mIsMetric) {
mSpeed = // kilometers / hour
value * mStepLength // centimeters / minute
/ 100000f * 60f; // centimeters/kilometer
}
else {
mSpeed = // miles / hour
value * mStepLength // inches / minute
/ 63360f * 60f; // inches/mile
}
tellFasterSlower();
notifyListener();
}
/**
* Say slower/faster, if needed.
*/
private void tellFasterSlower() {
if (mShouldTellFasterslower && mTts != null) {
long now = System.currentTimeMillis();
if (now - mSpokenAt > 3000 && !mTts.isSpeaking()) {
float little = 0.10f;
float normal = 0.30f;
float much = 0.50f;
boolean spoken = true;
if (mSpeed < mDesiredSpeed * (1 - much)) {
mTts.speak("much faster!", 0, null);
}
else
if (mSpeed > mDesiredSpeed * (1 much)) {
mTts.speak("much slower!", 0, null);
}
else
if (mSpeed < mDesiredSpeed * (1 - normal)) {
mTts.speak("faster!", 0, null);
}
else
if (mSpeed > mDesiredSpeed * (1 normal)) {
mTts.speak("slower!", 0, null);
}
else
if (mSpeed < mDesiredSpeed * (1 - little)) {
mTts.speak("a little faster!", 0, null);
}
else
if (mSpeed > mDesiredSpeed * (1 little)) {
mTts.speak("a little slower!", 0, null);
}
else {
spoken = false;
}
if (spoken) {
mSpokenAt = now;
}
}
}
}
public void passValue() {
// Not used
}
@Override
public void speak() {
if (mSettings.shouldTellSpeed() && mTts != null) {
if (mSpeed >= .01f) {
mTts.speak(("" (mSpeed 0.000001f)).substring(0, 4) (mIsMetric ? " kilometers per hour" : " miles per hour"), 1, null);
}
}
}
}
* Pedometer - Android App
* Copyright (C) 2009 Levente Bagi
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package name.bagi.levente.pedometer;
import com.google.tts.TTS;
/**
* Calculates and displays pace (steps / minute), handles input of desired pace,
* notifies user if he/she has to go faster or slower.
*
* Uses {@link PaceNotifier}, calculates speed as product of pace and step length.
*
* @author Levente Bagi
*/
public class SpeedNotifier implements PaceNotifier.Listener, SpeakingTimer.Listener {
public interface Listener {
public void valueChanged(float value);
public void passValue();
}
private Listener mListener;
int mCounter = 0;
float mSpeed = 0;
boolean mIsMetric;
float mStepLength;
PedometerSettings mSettings;
TTS mTts;
/** Desired speed, adjusted by the user */
float mDesiredSpeed;
/** Should we speak? */
boolean mShouldTellFasterslower;
boolean mShouldTellSpeed;
/** When did the TTS speak last time */
private long mSpokenAt = 0;
public SpeedNotifier(Listener listener, PedometerSettings settings, TTS tts) {
mListener = listener;
mTts = tts;
mSettings = settings;
mDesiredSpeed = mSettings.getDesiredSpeed();
reloadSettings();
}
public void setSpeed(float speed) {
mSpeed = speed;
notifyListener();
}
public void reloadSettings() {
mIsMetric = mSettings.isMetric();
mStepLength = mSettings.getStepLength();
mShouldTellSpeed = mSettings.shouldTellSpeed();
mShouldTellFasterslower =
mSettings.shouldTellFasterslower()
&& mSettings.getMaintainOption() == PedometerSettings.M_SPEED;
notifyListener();
}
public void setTts(TTS tts) {
mTts = tts;
}
public void setDesiredSpeed(float desiredSpeed) {
mDesiredSpeed = desiredSpeed;
}
private void notifyListener() {
mListener.valueChanged(mSpeed);
}
@Override
public void paceChanged(int value) {
if (mIsMetric) {
mSpeed = // kilometers / hour
value * mStepLength // centimeters / minute
/ 100000f * 60f; // centimeters/kilometer
}
else {
mSpeed = // miles / hour
value * mStepLength // inches / minute
/ 63360f * 60f; // inches/mile
}
tellFasterSlower();
notifyListener();
}
/**
* Say slower/faster, if needed.
*/
private void tellFasterSlower() {
if (mShouldTellFasterslower && mTts != null) {
long now = System.currentTimeMillis();
if (now - mSpokenAt > 3000 && !mTts.isSpeaking()) {
float little = 0.10f;
float normal = 0.30f;
float much = 0.50f;
boolean spoken = true;
if (mSpeed < mDesiredSpeed * (1 - much)) {
mTts.speak("much faster!", 0, null);
}
else
if (mSpeed > mDesiredSpeed * (1 much)) {
mTts.speak("much slower!", 0, null);
}
else
if (mSpeed < mDesiredSpeed * (1 - normal)) {
mTts.speak("faster!", 0, null);
}
else
if (mSpeed > mDesiredSpeed * (1 normal)) {
mTts.speak("slower!", 0, null);
}
else
if (mSpeed < mDesiredSpeed * (1 - little)) {
mTts.speak("a little faster!", 0, null);
}
else
if (mSpeed > mDesiredSpeed * (1 little)) {
mTts.speak("a little slower!", 0, null);
}
else {
spoken = false;
}
if (spoken) {
mSpokenAt = now;
}
}
}
}
public void passValue() {
// Not used
}
@Override
public void speak() {
if (mSettings.shouldTellSpeed() && mTts != null) {
if (mSpeed >= .01f) {
mTts.speak(("" (mSpeed 0.000001f)).substring(0, 4) (mIsMetric ? " kilometers per hour" : " miles per hour"), 1, null);
}
}
}
}
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