Monday, November 19, 2012

Irritating things I seem to forget how to do (Android Version)

So one of the most basic things you can do in Android is start a new intent it is super simple (this is not what I forget - I'll get to that in a minute):

Intent i = new Intent(this, AwesomeIntent.class);

See? very simple.  Now if you want to pass data back from an activity that you just created you have to start the Inent slightly different:

Intent i = new Intent(this, AwesomeIntent.class);
startActivityForResult(i, REQUEST_CODE_FOR_MY_INTENT);

Even that was pretty easy wasn't it?  

It doesn't take long though before you want to pass information into an intent, and of course you have to return data from the intent (and process it as well).  Here is how you do that:

Intent i = new Intent(this, AwesomeIntent.class);
i.putExtra(Key, Value);

The documentation says that should work however this seems to work better:

Intent i = new Intent(this, AwesomeIntent.class);
Bundle b = new Bundle();
b.putString("KEY", "VALUE");


You can get that extra data you passed in (often in the onCreate method) like this:

Bundle b = getIntent().getExtras();
magicKey = b.getString(key);

Now the whole reason I created the post when you are in an Activity that was created by a "startActivityForResult".  Inside the method where your activity finishes up just do this:

Intent intent = this.getIntent();
intent.putExtra("SOMETHING", "EXTRAS");
this.setResult(RESULT_OK, intent);

And lastly the class that started it all needs to implement this method:

protected void onActivityResult(int requestCode, int resultCode, Intent intentData) 
   if (requestCode == REQUEST_CODE_FOR_MY_INTENT)
     //do some cool stuff here

Pretty simple basic stuff - but for whatever reason I always seem to have to look it up.

Happy Coding!


Friday, November 16, 2012

Removing SVN cruft

I'm slowly converting some of my old SVN projects to bitbucket (using git).  Bit Bucket is really the coolest thing when it comes to source code control.  If you can get over the GIT learning curve there are so many features that bit bucket gives you free (Issue Tracking, WIKI, source code browsing - just to name a few).  I don't know how or why but I love those guys...

 One of the odd / irritating svn does is create that .svn folder in all of your directories if you check a project out.  I suppose you could use the .gitignore for these but I stumbled upon a much better way to do this.  At the root of your project execute this command:
find . -type d -name .svn -exec rm -rf {} \;

Now if you are running windows... well... stop that go get linux or a mac!

By the way I found this little goody over at stackoverflow.