Try reboot device.
Start device with start button on side of phone.
Screen will go to light black color.
Long press Start button for menu:
Power off
Reboot
Airplane mode

Reboot item is in same level like Start button.
Click on the screen - (Hear a click)
Now find OK button , it is under Reboot item on right side of screen.
Press OK (Hear a click)
Wait a moment.
If device to do nothing , try short press Start button (sreen will black)
and again to press Start button. If screen go to light black color,
try again find Reboot item as written above.

Change the title associated with this activity. If this is a top-level activity, the title for its window will change. If it is an embedded activity, the parent can do whatever it wants with it.

 String sTitle = "My new title";
 setTitle(sTitle);

Android development

long is 64 bit signed type and used when int is not large enough to hold the value.

long je celé číslo 64 bitů -9223372036854775808 +9223372036854775807 a používá se tam, kde typ int není schopen pojmout takovou hodnotu čísla.

		// declaration and assignment of value type long
		long n = 22337203685477580L;
		// print formated value
		System.out.printf("The value of x is %d%n", n); // 22337203685477580
		System.out.format("%+,8d%n%n", n); // +22 337 203 685 477 580

		// declaring more variables in single statement
		long lo1 = 12L, lo2 = 56, lo3 = 1455555555589L;

		// long range of value
		System.out.println(Long.MAX_VALUE); // 9223372036854775807
		System.out.println(Long.MIN_VALUE); // -9223372036854775808

		// check if a string is a valid number in Java example
		// convert string to long Java example
		String sLong = "1288888888888888";
		long longParse = Long.parseLong(sLong);

		// convert strings to numbers
		long longFromString = (Long.valueOf(sLong)).longValue();

		// long to string in Java example code
		Long longObj = new Long(229999999999L);
		String str = longObj.toString();
		// else
		Long longS = 888888888888L;
		String strLong = longS.toString();

		// compare two long variables
		Long longComp1 = 5555L;
		if (longComp1.equals(55555555L))
			System.out.print("true");

		// compares the two specified long values in Java example

		int i = longS.compareTo(444444L); // -1 first < second
		// 0 first == second
		// 1 first > second
		System.out.print(i);

Table of usability phones with Android: (Our software)

October 2011	September 2011
Samsung Galaxy S2 10,90% Samsung Galaxy S 8,10% Samsung Galaxy Tab 7,00% Samsung Galaxy Mini 6,20% HTC Desire HD 4,10% Samsung Galaxy Ace 4,10% Samsung Galaxy S 4,00% Samsung Galaxy Fit 3,30% HTC Wildfire 3,20% SEMC Xperia X10 2,20%	Samsung Galaxy S2 13.8% Samsung Galaxy S 8.5% Samsung Galaxy Tab 7.4% Samsung Galaxy Mini 5.4% Samsung Galaxy S 4.0% HTC Desire HD 3.8% Samsung Galaxy Ace 3.8% HTC Wildfire 3.2% Samsung Galaxy Fit 3.1% SEMC Xperia X10 2.1%

Graph of usability Smartphone with Android - October 2011:

Samsung Galaxy S2 vs iPhone4 - video

Samsung Galaxy S2 vs iPhone4 - browsing, gaming, apps, performance, browser, fast, against, navigation, Sygic, apk, Android, iOS

For some graphics you can use Paint.NET editor.
//www.getpaint.net/
How create Snow Effects on Text by 1 minute show this video: