Question

Those who invented Android and Java didn’t invented for themselves. Since I started developing application with Java in Android I get the most ridiculous errors and I am really going crazy (and if I do, Google and Sun Microsystems will make “booooom”)

I have this simple code that is supposed to get the length of a string passed as an argument. The application just crashes, making me spend some minutes swearing and torturing the keyboard.

My code:

@Override
protected void onPostExecute(String result) {
    if (result.length() == 0) {
        txtStatus.setText("Ready");
    }
}

If I remove the condition it works (the text “Ready” is shown on my TextView). This is something weird and I know that I might be missing some little something.

Give me some clues and thanks for everything!

P.S. If you hear a gun shoot coming from your neighbor it might be me.

Answer 1

Its because your string is perhaps null. Do it like this:

@Override
protected void onPostExecute(String result) {
    if (!TextUtils.isEmpty(result)) {
        txtStatus.setText("Ready");
    }
}