Write a countdown software for Android

When Ubuntu is upgraded to 11.04 blank files, write a small program trainer.

Let's take a look at the uidesign of the program:

 

 

Code for layout file main. xml:

<? XML version = "1.0" encoding = "UTF-8"?>

<Linearlayout

Xmlns: Android = "http://schemas.android.com/apk/res/android"

Android: Orientation = "vertical"

Android: layout_width = "fill_parent"

Android: layout_height = "fill_parent">

<Linearlayout

Android: layout_width = "fill_parent"

Android: layout_height = "140dip">

<Textview

Android: gravity = "center"

Android: layout_width = "fill_parent"

Android: layout_height = "fill_parent"

Android: text = "Countdown"

Android: textsize = "90dip"/>

</Linearlayout>

<Linearlayout

Android: Orientation = "horizontal"

Android: layout_width = "fill_parent"

Android: layout_height = "wrap_content"

Android: layout_weight = "1"

Android: gravity = "center"

Android: padding = "10dip">

<Button

Android: Id = "@ + ID/down"

Android: layout_width = "wrap_content"

Android: layout_height = "wrap_content"

Android: text = "-"

Android: textsize = "40dip"/>

<Textview

Android: Id = "@ + ID/time"

Android: layout_width = "wrap_content"

Android: layout_height = "wrap_content"

Android: text = "0: 00"

Android: textsize = "40dip"

Android: padding = "10dip"/>

<Button

Android: Id = "@ + ID/Up"

Android: layout_width = "wrap_content"

Android: layout_height = "wrap_content"

Android: text = "+"

Android: textsize = "40dip"/>

</Linearlayout>

<Button

Android: Id = "@ + ID/tart"

Android: layout_width = "fill_parent"

Android: layout_height = "wrap_content"

Android: layout_gravity = "bottom"

Android: text = ""/>

</Linearlayout>

 

 

 

Main program code:

Package Android. daojishi;

 

Import Android. App. activity;

Import Android. Media. mediaplayer;

Import Android. OS. Bundle;

Import Android. OS. countdowntimer;

Import Android. View. view;

Import Android. View. View. onclicklistener;

Import Android. widget. Button;

Import Android. widget. textview;

 

Public class brewclockactivity extends activity implements onclicklistener {

 

 

Protected button addtime;

Protected button decreasetime;

Protected button start;

Protected textview time;

Mediaplayer mmediaplayer;

 

 

Protected int brewtime = 3;

Protected countdowntimer brewcountdowntimer;

Protected int brewcount = 0;

Protected Boolean isbrewing = false;

 

@ Override

Public void oncreate (bundle savedinstancestate ){

Super. oncreate (savedinstancestate );

Initsounds ();

Setcontentview (R. layout. Main );

 

// Connect interface elements to properties

Addtime = (button) findviewbyid (R. Id. Up );

Decreasetime = (button) findviewbyid (R. Id. Down );

Start = (button) findviewbyid(r.id.tar t );

Time = (textview) findviewbyid (R. Id. time );

// Setup clicklisteners

Addtime. setonclicklistener (this );

Decreasetime. setonclicklistener (this );

Start. setonclicklistener (this );

// Set the initial brew values

Setbrewtime (3 );

}

 

Private void initsounds (){

// Todo auto-generated method stub

Mmediaplayer = mediaplayer. Create (this, R. Raw. haliluya );

 

}

 

Public void setbrewtime (INT minutes ){

If (isbrewing)

Return;

Brewtime = minutes;

If (brewtime <1)

Brewtime = 1;

 

Time. settext (string. valueof (brewtime) + "M ");

}

Public void startbrew (){

Brewcountdowntimer = new countdowntimer (brewtime x 60*1000,100 0 ){

@ Override

Public void ontick (long millisuntilfinished ){

Time. settext (string. valueof (millisuntilfinished/1000) + "S ");

}

@ Override

Public void onfinish (){

Isbrewing = false;

Mmediaplayer. Start ();

Time. settext ("halilua ");

Start. settext ("START ");

}

};

Brewcountdowntimer. Start ();

Start. settext ("stop ");

Isbrewing = true;

}

Public void stopbrew (){

If (brewcountdowntimer! = NULL)

Brewcountdowntimer. Cancel ();

Isbrewing = false;

Start. settext ("START ");

}

 

Public void onclick (view v ){

If (V = addtime)

Setbrewtime (brewtime + 1 );

Else if (V = decreasetime)

Setbrewtime (brewtime-1 );

Else if (V = Start ){

If (isbrewing)

Stopbrew ();

Else

Startbrew ();

}

}

}

 

I am too lazy to write comments. Some code comes from coolshell. If you are interested, you can look for the tea program above.

Finally, let me show you my ubuntu11.04.

Unity-based Ubuntu is just around the corner !!!