I've implemented an adapterViewFlipper in my application but the way it flips the views, with the 'onFling' event calling displayNext(previous)Picture() is not so cool because the scrolling acts automatically AFTER your gesture is ended.
I would like to know how to implement flipping like Android does with the Home screens where the view follows your finger.
Any idea?
Related
I have created an application where I have a listview, so now I'm working to implement the sdk of samsung to manage the air gestures and its working ok, because the app recognize when I swipe without touch the screen, but what I would like do is implement a scroll down and up when the user do the gesture. so my question is How can I say to my app scroll up or down?? should be something to emulate the same thing as the user do when he press the screen and scroll
Inside ListView you can use smoothScrollToPositionFromTop or smoothScrollBy methods
On the Android developers website, in the section discussing AppWidgets, there is a passage that says that the only available gestures for AppWidgets are touch and vertical swipe (link):
Because widgets live on the home screen, they have to co-exist with the navigation that is established there. This limits the gesture support that is available in a widget compared to a full-screen app. While apps for example may support a view pager that allows the user to navigate between screens laterally, that gesture is already taken on the home screen for the purpose of navigating between home panels.
The only gestures available for widgets are:
Touch
Vertical swipe
Does this mean it is possible to listen for vertical swipes on an AppWidget?
I guess this is meant to say that you can only scroll through a ListView or go through items of the StackView (by doing vertical swipes).
There is no way how to implement regular onScroll, nor onTouch listeners for AppWidget.
How can I implement a custom swipe animation instead of the standard horizontal movement? I'm thinking about a mixture of ViewPager (swipe to scroll) and ViewFlipper (custom animation). It's important that the animation gives a live feedback to the user's finger movement, not just plays after a swipe has been completed.
Some examples:
http://www.youtube.com/watch?feature=player_embedded&v=BcloiEZa1iI
ICS launcher tilt effect
Card deck effect in ICS launcher menu
Cube effect of custom launchers
Any idea on how to generally override the swipe animation in a ViewPager?
You will have to override onTouchEvent(), onScroll() and the likes. Point is that the ViewPager's swipe is no animation but actually scrolls the views around. Animations wont work for you here is my bet.
I've made an activity that looks a lot like the level select screen from angry birds: there is a grid of button, and you can scroll through pages of them by swiping right or left.
I built it by creating a layout of the buttons, and then adding those layout to a Gallery view.
The problem is the animation is jerky, even if you swipe extra slowly, the content jumps ahead. Even when you fling the gallery page, it skips and jumps along its way to its destination.
I am wondering how to fix this: Maybe the complex layout it making it non responsive during the inflate?
Do you know how to fix this, or of a good way to do a workaround using some other approach that will let me have 3 or more screens smoothly swiping from page to page?
You should be using ViewPager. This is available in android support packages. Gallery Widget will not be smooth if you add components into it which has a lot of touch actions.
http://android-developers.blogspot.in/2011/08/horizontal-view-swiping-with-viewpager.html
I have a ViewFlipper where one of the views is a ListView. To move back and forth between the views, I have a GestureListener that detects left and right swipes. Sometimes the left & right swipes interfere with the ListView. That is, when I want to switch to the next view by swiping left/right, I may accidentally click on an item in my list.
Is there a good way to prevent this interference?
Have a look at http://android-journey.blogspot.com/2010/01/android-gestures.html.
The SimpleGestureListener from this page is a great solution to gesture detection. When run in dynamic mode (the default), it intercepts touch events that are determined to be gestures to prevent them from performing other actions. Other touch events are not interfered with.
If you are only interested in swipe gestures I recommend disabling the code for detecting tapping and only listening for swipes.
If you want something a little snazzier than a ViewFlipper (something more like the Android home screen) try out this new addition to the Android compatibility libs: http://android-developers.blogspot.com/2011/08/horizontal-view-swiping-with-viewpager.html?m=1