Android ScrollView implementation with additional touch-interception-rules.
##Question## Have you ever tried to use a ScrollView and another ScrollContainer in one layout tree?
Not yet? Lucky you!
For everyone else read carefully.
##Analysis## Android updated there ScrollView onInterceptTouchEvent(MotionEvent event) implementation to ignore touch events when ScrollView is at top and can't scroll any further. There for with API 14 (Android 4.0) comes View.canScrollVertically(int direction) and View.canScrollHoricontally(int direction).
if you need lower API, you can use ViewCompat instead
But why only one direction and one axis?
##Solution## Create a custom ScrollView with an full implemented onInterceptTouchEvent(MotionEvent event) method. Enable some configuration with custom rules.
Rule let you manage all children views without extend any other classes.
##Benefits## Change scroll behaviour of nested scrollable views in real time via code.
##Problems## You will get some performance problems if you have done a really fancy view tree with a lot of ViewGroups and scrollable Views.
##License##
Copyright (c) 2015, LOVOO GmbH All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
-
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
-
Neither the name of LOVOO GmbH nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.