Tap outside edittext to lose focus

To solve this problem what you have to do is first use setOnFocusChangeListener of that Edittext

edittext.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (!hasFocus) {
                    Log.d("focus", "focus lost");
                    // Do whatever you want here
                } else {
                    Log.d("focus", "focused");
                }
            }
        });

and then what you need to do is override dispatchTouchEvent in the activity which contains that Edittext see below code

@Override
    public boolean dispatchTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            View v = getCurrentFocus();
            if ( v instanceof EditText) {
                Rect outRect = new Rect();
                v.getGlobalVisibleRect(outRect);
                if (!outRect.contains((int)event.getRawX(), (int)event.getRawY())) {
                    Log.d("focus", "touchevent");
                    v.clearFocus();
                    InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
                    imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
                }
            }
        }
        return super.dispatchTouchEvent(event);
    }

Now what will happen is when a user click outside then, firstly this dispatchTouchEvent will get called which then will clear focus from the editext, now your OnFocusChangeListener will get called that focus has been changed, now here you can do anything which you wanted to do, hope it works :)

@woodshy has the answer for hiding the keyboard, but maybe putting the code in onClick is not as good as putting it in onFocusChanged. As for forcing it to lose focus, you need to set the object you want to transfer the focus to, in its XML file:

android:focusable="true"
android:focusableInTouchMode ="true"