I have a 2.67 GHz Celeron processor, 1.21 GB of RAM on a x86 Windows XP Professional machine. My understanding is that the Android emulator should start fairly quickly on such a machine, but for me it does not. I have followed all instructions in setting up the IDE, SDKs, JDKs and such and have had some success in staring the emulator quickly but is very particulary. How can I, if possible, fix this problem?
You can use Character.isLetter(char) on TextBox's KeyUpHandler:
ReplyDeletetextBox.addKeyUpHandler(new KeyUpHandler() {
public void onKeyUp(KeyUpEvent event) {
if (!Character.isLetter(event.getNativeKeyCode())) {
((TextBox)event.getSource()).cancelKey();
customPopup.showRelativeTo(textBox);// your styled PopupPanel
}
}
});
But, Character.isLetter(char) works with ASCII, if you want more see you can do it something like that:
/**
* A better implementation of isLetter -- the default GWT version doesn't support non-English characters.
*
* @param c the character to check
* @return whether the character represents and alphabetic symbol.
*/
public static boolean isLetter(char c) {
int val = (int) c;
return inRange(val, 65, 90) || inRange(val, 97, 122) || inRange(val, 192, 687) || inRange(val, 900, 1159) ||
inRange(val, 1162, 1315) || inRange(val, 1329, 1366) || inRange(val, 1377, 1415) || inRange(val, 1425, 1610);
}
/**
* Checks if an int value is in a range.
* @param value value to check
* @param min min value
* @param max max value
* @return whether value is in the range, inclusively.
*/
public static boolean inRange(int value, int min, int max) {
return (value <= max) & (value >= min);
}
See this: http://code.google.com/p/google-web-toolkit/issues/detail?id=1983
You can write some validation code on keyTyped event to check, what was the last letter typed. Was it a number or not. If not then show error message.
ReplyDeleteTry considering KeyLister method : keyTyped()
You may add regex to do this
ReplyDeleteJavascript to allow Alphabetical characters
ReplyDeletefunction AllowAlphabet(e)
{
keyEntry = !isIE ? e.which : event.keyCode;
if (((keyEntry >= '65') && (keyEntry <= '90')) || ((keyEntry >= '97') && (keyEntry <=
'122')) || (keyEntry == '46') || (keyEntry == '32') || keyEntry == '45')
return true;
}