Wolin Labs :: fun toys for your iThingy & Droid


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Git Submodule with Local Changes Example

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Editing GoPro Hero2 Video with Cinelerra

Code Browsing with Emacs, GLOBAL, and Speedbar

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Generating an Audio Sine Wave with Java

Android Simple Yes/No MessageBox

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Creating a Bootloader Environment (Freescale ColdFire Example)

Pentomino Smackdown: Names That Didn't Make the Cut

Android Simple Yes/No MessageBox

In Windows, you can ask a simple Yes/No question with one line:

if (IDYES == MessageBox(hWnd, "Are you sure?", "Erase hard drive", MB_YESNO|MB_ICONEXCLAMATION)) {

I've seen a lot of posts asking how to do something similar in Android. I've also seen a lot of answers, but none I thought were clear and concise... I have combined the information I gleaned from various postings in an attempt to provide "one stop shopping" with a simple example.

This is a simple app that puts up a Yes/No message box and processes the input.
When the Yes button is pressed, it flashes a toast message.
When the No button is pressed, it does nothing.

public class YesNoSampleActivity extends Activity {
    public void onCreate(Bundle savedInstanceState) {
        //Put up the Yes/No message box
    	AlertDialog.Builder builder = new AlertDialog.Builder(this);
    	.setTitle("Erase hard drive")
    	.setMessage("Are you sure?")
    	.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
    	    public void onClick(DialogInterface dialog, int which) {			      	
    	    	//Yes button clicked, do something
    	    	Toast.makeText(YesNoSampleActivity.this, "Yes button pressed", 
    	.setNegativeButton("No", null)						//Do nothing on no
    	// Continue code after the Yes/No dialog
    	// ....

Note: within the embedded anonymous DialogInterface.OnClickListener's onClick method, if you wish to access the YesNoSampleActivity object's this, you use the special syntax: YesNoSampleActivity.this

Download the complete Eclipse project source.

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ATX PS Adapter Ultimate Serial Port
ATX PS Adapter

Use an ATX PC power supply as a 5V, 3.3V, and +12V/-12V bench supply the easy way, without cutting the case or mounting external connectors, resistors, LEDs, switches, and fuses.

Provides visual indication when supply is plugged in and turned on, also fuses the power voltage outputs for safety. Run USB powered development boards via the USB connectors on the 5V line.

Ultimate Serial Port (Debug Buddy)

USB serial port with standard, 5V and 3V RS232, plus integrated null modem and gender changer. Implements TX/RX and RTS#/CTS# for optional hardware handshake.

Also includes 3.3V<->5V level shifters, debug LEDs, and 13 clock sources. Valuable tool for hands on problem solving and hacking