How to pictures don't show in the user gallery

If your app writes images to the SD card, please, add a .nomedia file in your directory so
they don't show up in Gallery

Simon Sinek: How great leaders inspire action | Video on TED.com

Simon Sinek: How great leaders inspire action | Video on TED.com
Замечательная лекция с не менее замечательными примерами, в которой показано, что нужно все начинать с вопроса Зачем?, а уже потом подходить к вопросам Как? и Что?

How to show/hide the Android Soft Keyboard

If You need to show or to hide a virtual (soft) keyboard in Android app:
To hide:

InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(myEditText.getWindowToken(), 0);

This will force the keyboard to be hidden in all situations. In some cases you will want to pass in InputMethodManager.HIDE_IMPLICIT_ONLY as the second parameter to ensure you only hide the keyboard when the user didn't explicitly force it to appear (by holding down menu).

To show:

InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(myEditText, 0);