Develop Reference

How (i.e., what intent action) to start the set up email account activity (add new email account activity) of the email application

From within my app, I'd like to start the set up new email account activity of the Email App which looks like this: http://i.stack.imgur.com/BNYnj.png
I've looked at this http://source-android.frandroid.com/packages/apps/Email/AndroidManifest.xml
and tried to start the set up email activity:
Intent intent = new Intent("com.android.email.CREATE_ACCOUNT");
startActivity(intent);
But I got an exception:
E/AndroidRuntime(517): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.android.email.CREATE_ACCOUNT }
Anyone please help me?
Thanks so much,
John

you could try using an explicit intent. instead of
new Intent("com.android.email.CREATE_ACCOUNT")
use
new Intent(context, com.android.email.activity.setup.AccountSetupBasics.class)
you may also want to look into the whole ACTION_ADD_ACCOUNT action string. it may do what you are looking for without having to use a SPECIFIC app. for example, when an oem installs a different email app from the stock android one. if it happens there won't be anything to handle either the explicity or implicit intent.

This works for from APIs 4.0+.
Intent intent = new Intent("com.android.email.CREATE_ACCOUNT");
intent.putExtra("FLOW_MODE", 0);
startActivity(intent);
Below works for from APIs 2.1+. Maybe also work for lower versions (not tested).
Intent intent = new Intent();
intent.setClassName("com.android.email", "com.android.email.activity.setup.AccountSetupBasics");
intent.putExtra("FLOW_MODE", 0);
startActivity(intent);

Can't open Market App from my Application

I'm trying to open market app from my app using:
Intent i = new Intent("Intent.ACTION_VIEW");
i.setData(Uri.parse("market://details?id=com.compamy.app"));
startActivity(i);
But I have No Activity Found Error. I am using real device and I have market installed.
So my question is: What can be done here?Thanks.

The only problem here is what zapl pointed out in the comments ("" around the action). The documentation (http://developer.android.com/guide/publishing/publishing.html) clearly states how to use this:
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("market://details?id=com.example.android"));
startActivity(intent);

official documantation link:
http://developer.android.com/guide/publishing/publishing.html#marketintent
Opening the app details page from your Android app
To open the Google Play details page from your application, create an intent with the ACTION_VIEW action and include a data URI in this format:
market://details?id=
For example, here's how you can create an intent and open an application's details page in Google Play:
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("market://details?id=com.example.android"));
startActivity(intent);

Try this:
Uri uri = Uri.parse("market://details?id=com.compamy.app");
Intent i = new Intent(Intent.ACTION_VIEW, uri);
startActivity(i);

Don't display Facebook app in Android Intent

Hi I have the following code:
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_TEXT, message);
Now I can choose among a lot of applications: Gmail, Twitter, Facebook, SMS
But I don't want to display the Facebook option. Is this possible?
Or is it possible to add custom code when I click on the Facebook item? Like displaying an alertDialog etc

Try send the url like this:
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setData(Uri.parse("http://www.google.com"));
intent.putExtra(Intent.EXTRA_TEXT, message);

You can
use the PackageManager to resolve the intent,
get the list of candidate applications,
exclude Facebook from that list
create the activity picker yourself with this updated list
This would be the exact opposite of Android Intent for Twitter application

Call another appllication from my application

I am creating an application where I need to call another application that is already installed in the device on button click.
I have done some research on it and I understand that I will need to call an intent for the same. What I dont understand is I do not have a class name for the application I want to call. For example, if I want to call the device's gallery from my application on button click, how do I do that?
Uri uri = Uri.parse("file:///sdcard/");
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setData(uri);
intent.setType("application/pdf");
startActivity(intent);
return true;
Thanks guys. I have tried this code but it said document could not be opened.

You will need to call Implicit Intents
From the documentation:
Implicit Intents have not specified a component; instead, they must
include enough information for the system to determine which of the
available components is best to run for that intent.
These intents can be triggered providing any action, type or category information
For example you want to open browser Activity and you don't know the Activity class name you will use something like this:
Intent in = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com"));
startActivity(in);
Another example: you don't know the Gallery Activity class, you will call it using Implicit Intent like this:
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Picture"), SELECT_PICTURE);

Here the call
Enjoy coding....
Intent res = new Intent();
String mPackage = "com.ReachOut";
String mClass = ".splash1";
res.setComponent(new ComponentName(mPackage,mPackage+mClass));
startActivity(res);

If the exact application is less important, and you just need something that will display your content, you can omit the component name entirely, too. Just set the action, data, and (optionally) type on the intent and let the OS do the work.
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setData(/*your data uri*/);
intent.setType(/*your data's MIME type*/);
startActivity(intent);
This intent will be handled by some app that has registered for intents with the view action and the appropriate MIME type. This is an implicit intent, like Adil mentioned.

Accessing Android Inbox/Messaging from Activity?

Is it possible to open up the default Android Messaging activity from inside an activity you write yourself? Like for example: I press a "Mail" button inside my program, and it opens the Android Messaging app just like as if I was to press the Messaging icon on the main screen.
I did something similar to this with the Contacts activity, but only the contact list comes up, no extra functionality like Adding/Modifying/Deleting, etc.
Any ideas?
edit: I found this way to open the "Compose New Message" Activity, I just need to back it up a step. Does anyone know the correct MIME type instead of this one?
Intent sendIntent = new Intent(Intent.ACTION_VIEW);
sendIntent.setType("vnd.android-dir/mms-sms");
m_activity.startActivity(sendIntent);

This starts the messaging app from another app:
Intent intent = new Intent("android.intent.action.MAIN");
intent.setComponent(new ComponentName("com.android.mms","com.android.mms.ui.ConversationList"));
startActivity(intent);
Just put it inside a button listener or whatever user input you want to open it from.
Enjoy :-)

If you want to open the messaging app to view messages and not for sending a message, this should do the job:
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setPackage("com.google.android.apps.messaging");
startActivity(intent);