Ch # 2 Dialog coding error

yazi · December 13th, 2011, 11:47 AM

First I wrote all this code from book but still error then I copied from www.wrox.com still same error and I made that word bold so please guide me...

Code:

@Override
    protected Dialog onCreateDialog(int id) { 
        switch (id) {
        case 0:        	
        	return new AlertDialog.Builder(this)
        	.setIcon(R.drawable.icon) //getting error here on "icon"
            .setTitle("This is a dialog with some simple text...")
            .setPositiveButton("OK", new 
                DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, 
                int whichButton) 
                {
                	Toast.makeText(getBaseContext(), 
                		 "OK clicked!", Toast.LENGTH_SHORT).show();
                }
            })

Cliff2310 · December 13th, 2011, 07:35 PM

Hi Yazi
Icon some times works and some times it does not. Change it to 'ic_launcher'. This works all the time. This is the file name found under 'res/drawable-?dpi'.
It is the icon that appears on the android device.
Hope this Helps
Cliff

yazi · December 14th, 2011, 02:32 AM

they are already ic_launcher but still getting error...

Cliff2310 · December 14th, 2011, 04:00 PM

Hi Yazi
Sorry, I was unclear. Change 'icon' to 'ic_launcher'.
Like this:
.setIcon(R.drawable.ic_launcher)

Cliff

Paulo_Afonso · December 27th, 2011, 03:39 PM

Hi Yazi!!

When you are writing the code "R.drawable." , press Ctrl+space. Then is only choose the icon name which will go appear. Try it.
Hope this helps.

Paulo_Afonso (Brazil)

anwarma · January 10th, 2012, 11:14 PM

I tried what Paulo_Afonso suggested last but I only found

case 0:
return new AlertDialog.Builder(this)
.setIcon(R.drawable.ic_launcher) '---no icon

Another error is cannot get rid off is ItemsChecked

.setMultiChoiceItems(items, itemsChecked, new
DialogInterface.OnMultiChoiceClickListener() {

Any Ideas?

Gink · January 11th, 2012, 06:20 PM

Seems like you are misunderstanding mate...

You want to change where you have "icons" typed into your code to be "ic_launcher"

the code is calling for the png file found in the res/layout/drawable folders, which used to be icon.png but has been changed in new versions to ic_launcher.png, so you need to change your code to match that. Anywhere in the code throughout the book that you see "R.drawable.icon" you need to instead type "R.drawable.ic_launcher"

Paulo_Alfonso's suggestion is a good way to go, as the menu it brings up will only list the available resources, so choosing from it keeps you from entering something that doesn't exist...

Hopefully that gets you pointed back in the right direction?

Cliff2310 · January 11th, 2012, 08:01 PM

Hi Yazi
For the ItemsChecked error. Do you have the following lines of code?
[code]
public class DialogActivity extends Activity {
CharSequence[] items = {"Sun", "Apple", "Microsoft" };
boolean[] itemChecked = new boolean [items.length];
[\code]
Cliff
PS If you have the 'boolean itemChecked...' post the error you are getting.

barcapat · February 15th, 2012, 11:55 AM

Thanks for the solution to this problem using icon and the explanation for the problem. Now can use the Ctrl-Space to see what comes up if get similar problems and also know to check the folders for relevant files.