Question

In the code below, I am reacting to an activity return. When I get the correct code and result, I want to put the result of “data” into an uneditable text view. I have tried to set the text view directly to the intent data using the following code:

encodedText.setText(data.getData().toString());

However I get an exception error when I try to do this. I then tried to do it the following way(See arrow):

public void onActivityResult(int requestCode, int resultCode, Intent data)
{
    if (requestCode == request_Code) {
        if (resultCode == RESULT_OK) {
            String encoded = data.getData().toString();
            TextView encodedText = (TextView) findViewById(R.id.result); 
        encodedText.setText(encoded); <------
        }            
    }
}

I put a break point at the line the arrow points to in the code example, and it is this line the program has a problem with. I have looked at the setText() function in the textView docs and I still am not sure what I am doing wrong. Anyone see what I don’t?

Answer 1

You are getting a NullPointerException when trying to set the text(encodedText.setText(encoded);) because your TextView that you lookup with findViewById() is null. Check your layout so you do have this TextView in the layout and avoid the NullPointerException.