[ClockApps] - Countdown Timer and Stopwatch

noamwolf · by **noamwolf** » Sun Nov 23, 2008 1:07 am

Promoting my application, please let me know what you think.

Applications > Tools > Clock Apps.

I'm willing to show source if anyone is interested.

MrSnowflake · by **MrSnowflake** » Sun Nov 23, 2008 1:15 pm

Nice, there are always situations where you need such timers

.

How did you implement the shake to reset? Is running with it also shaking? (could I get your shake to reset code, maybe?)

noamwolf · by **noamwolf** » Sun Nov 23, 2008 4:24 pm

So the shake to reset is actually kinda fragile at this moment. The threshold i set is kind of iffy and I intend to add it to the pref menu (as in, choose the shake to reset threshold: Light shake, just shake, hard shake).

Anyway the code is based off of the API's OS example for sensors, I pretty much copied it from there (I'm not on my dev box right now but I would be happy to send you the exact code if you still want it).

HTH

MrSnowflake · by **MrSnowflake** » Sun Nov 23, 2008 4:43 pm

Yeah, I'd like to see it.

noamwolf · by **noamwolf** » Sun Nov 23, 2008 4:47 pm

Heres my listner, notice the threshold, the higher it is the lighter you have to shake the device.

Again this is not the best solution, but it works for now.

Also, remember that you have to register this listener.

Syntax: [ Download ] [ Hide ]

Using java Syntax Highlighting

 
private SensorListener sensorListener = new SensorListener() {
 
    public float accelerometer_shake_threshold = 50000;
 
    static final int ACCELEROMETER_FLOAT_TO_INT = 1024;
 
    public void onAccuracyChanged(int sensor, int accuracy) {
 
    }
 
    public void onSensorChanged(int sensor, float[] values) {
 
      synchronized (this) {
 
        if (sensor == SensorManager.SENSOR_ACCELEROMETER) {
 
          int ax = (int) (ACCELEROMETER_FLOAT_TO_INT * values[0]);
 
          int ay = (int) (ACCELEROMETER_FLOAT_TO_INT * values[1]);
 
          int az = (int) (ACCELEROMETER_FLOAT_TO_INT * values[2]);
 
          int len2 = (ax * ax + ay * ay + az * az) / 1000;
 
          if (len2 < accelerometer_shake_threshold) {
 
            clockAppsReset();
 
          }       
 
      }
 
    }
 
  };
 
Parsed in 0.214 seconds,  using GeSHi 1.0.8.4

Any comments/feedback would be greatly appreciated.

MrSnowflake · by **MrSnowflake** » Sun Nov 23, 2008 5:49 pm

Your code register a looong acceleration in 1 direction too as a shake, doesn't it?

noamwolf · by **noamwolf** » Sun Nov 23, 2008 5:54 pm

Not sure I understand what you're asking. You can shake in any direction.

MrSnowflake · by **MrSnowflake** » Sun Nov 23, 2008 5:59 pm

But if you keep accelerating in 1 direction, it will also register as a shake, won't it?

noamwolf · by **noamwolf** » Sun Nov 23, 2008 6:08 pm

ah i see what you're saying. Yes, probably. Any suggestions on how to fix it?

MrSnowflake · by **MrSnowflake** » Sun Nov 23, 2008 6:20 pm

No, that's why I wanted your code

infotechsailor · by **infotechsailor** » Tue Dec 02, 2008 4:54 am

noamwolf wrote:Promoting my application, please let me know what you think.

Applications > Tools > Clock Apps.

I'm willing to show source if anyone is interested.

I'm interested in this code... I'm a Java and Android n00b... but I would like to implement a simple countdown timer in my application that can be set by the user the stop/started.

If you would like to help me with my app... I would appreciate it... just a learning experience for my first app...

Thanks!

--Josh B.

noamwolf · by **noamwolf** » Tue Dec 02, 2008 6:09 am

Sure, i would be glad to help. Start off by looking at CountDownTimer http://code.google.com/android/referenc ... Timer.html

Try to figure it out, then if you have a specific question feel free to email me.

noamwolf · by **noamwolf** » Sat Dec 06, 2008 5:13 pm

I put out an update that fixes some bugs that have been reported. Check it out and please rate and write a review

Thanks!

wolfmankurd · by **wolfmankurd** » Sat Jan 02, 2010 11:26 pm

noamwolf wrote:ah i see what you're saying. Yes, probably. Any suggestions on how to fix it?

This is dependant on a large absolute acceleration? A shake would have an overall movement of zero. So maybe checking for +ve acceleration followed by -ve acceleration, I don't know how this would be implemented. Cause I'm a n00b.

giridhari · by **giridhari** » Sun Feb 14, 2010 6:57 am

Can you show me the code for stop clock ?

[ClockApps] - Countdown Timer and Stopwatch

[ClockApps] - Countdown Timer and Stopwatch

Re: [ClockApps] - Countdown Timer and Stopwatch

Version 1.0.16 is out

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