Help learning how custom Alert Boxes work

Arehexes · December 22nd, 2012, 08:42 PM

So I'm trying to figure out how to make a custom dialog pop up on a function call, yet my app crashes when I try to pop it up on the app.

    public void eventpopUpDialog(BluetoothAdapter bluetooth){
    	//Sets up the layout for the popup box
    	final Dialog dialog = new Dialog(this);
    	dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
    	dialog.setContentView(R.layout.bluetooth_popup_status);
    	
    	//Make the variables for each UI element on the pop up box
    	TextView output = (TextView) findViewById(R.id.popupDialogTV);
    	final Button close = (Button) findViewById(R.id.closePopUp);
    	
    	//testing to see what is crashing
    	output.setText("test");
    	
    	//The Event to close the dialog
    	close.setOnClickListener(new View.OnClickListener() {			
			public void onClick(View v) {
				dialog.dismiss();
			}
		});
    	
    	dialog.show();
}

This is the code in question, I'm at a lost for why it's not working >_>.

jonbonazza · December 24th, 2012, 10:24 PM

Can you please post a copy of the logcat output?

Arehexes · January 7th, 2013, 04:23 PM

Quote:

Originally Posted by jonbonazza

Can you please post a copy of the logcat output?

Wow I'm sorry for this late response I was busy the last two weeks, here is the logcat file from debugging the app.

jonbonazza · January 7th, 2013, 11:00 PM

Whats on line 122 of MainActivity.java?

Arehexes · January 8th, 2013, 05:01 PM

Quote:

Originally Posted by jonbonazza

Whats on line 122 of MainActivity.java?

Again I'm super sorry for the late response last time.

This is what was in line 122

PHP Code:


			
output.setText("test");

I'm guessing it's not working cause it's trying to talk to a object that is null. But I'm setting the object on line 118

PHP Code:


			
TextView output = (TextView) findViewById(R.id.popupDialogTV);

myrecek · January 9th, 2013, 04:40 AM

I am not sure if it helps but you could try dialog.findViewById

TextView output = (TextView) dialog.findViewById(R.id.popupDialogTV);

jonbonazza · January 9th, 2013, 11:14 AM

Quote:

Originally Posted by myrecek

I am not sure if it helps but you could try dialog.findViewById

TextView output = (TextView) dialog.findViewById(R.id.popupDialogTV);

This is what I was going to say. This should fix your problem.

Arehexes · January 9th, 2013, 04:04 PM

Thanks this worked, wonder why it was so hard to find the answer too >_>.