Access Gallery,Camera,CallLog and Contacts

Code Snippet to access gallery,

Intent intent = new Intent();

// View  the gallary

intent.setAction(Intent.ACTION_VIEW);

intent.setData(android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI);

// Start the activity

startActivity(intent);

Code Snippet to open Camera,

  

Intent  intent = new Intent()

intent.setAction(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivity(intent);    

Code Snippet to access Call Log:

Intent  intent = new Intent();

intent.setAction(Intent.ACTION_CALL_BUTTON);
startActivity(intent); 

Code Snippet to access Contacts:

Intent  intent = new Intent();

intent.setAction(Intent.ACTION_VIEW);
intent.setData(android.provider.Contacts.People.CONTENT_URI);
startActivity(intent);