Please, suggest a solution for the following scenario:
When a user clicks a button, the screen must be slid from right to
left and the next screen must be shown. But the background for the
both screens is the same (it's an image), and it is not slid, it stays
at its place.
What can you suggest? Can I use activities here, or there must be fragments, or anything else?
I found the solution. I created an activity and in the setContentView() function set a layout with a custom ViewPager. In the custom ViewPager the onTouchEvent() and onInterceptTouchEvent() functions are overriden and just return false.
The screens are implemented as Fragments. When a button is clicked, the viewPager's setCurrentItem() function is called and the corresponding screen is shown (the viewPager object is declared static and it can be called from a fragment).
Here is a good example of using ViewPager: http://www.javacodegeeks.com/2013/04/android-tutorial-using-the-viewpager.html
And this is an example of a custom view pager, where sliding is disabled: https://stackoverflow.com/a/13437997/2346046
Related
An Activity which has an image when i click the image
1)A fragment should be added in the middle of the parent activity
2)When the fragment appears the background of parent activity should get blurred/dimmed.
3)And clicking outside the fragment the fragment should disappear again.
(Same effect we get when we click contact image in whatsApp it opens an overlay)
I have can add fragment successfully but the activity remains active.
How to achieve this effect?
I have tried fragmentTransaction.setCustomAnimation(int,int) but it does not work.
Thank you.
You have two options:
Use a DialogFragment setting the layout in the onCreateView() method.
Add a full screen Fragment with a background with alpha (for example #44000000). Add the OnTouchListener to the background view and in the onTouch() method, dismiss the Fragment.
By the way, I would seriously recommend you the first option.
I have a Tablayout kind of a bottom navigation, and I want that when the user clicks in a cardview that I have it sends him to another Tablayout but when that happens the bottom navigation does not appear anymore. That is only possible with activities right?
A TabLayout is just a view like any other. It can be inflated as a part of another view, or as the content view for a Fragment or an Activity. So, you're not restricted to using just an Activity with a TabLayout.
Now, if you want it so that when you click on a CardView you're taking to another screen without a TabLayout, you have a couple of options:
Open a new activity
Since this second Activity is going to have a different content view, it's not going to have the TabLayout from the first activity.
Hide the TabLayout and change the content surrounding the CardView
Since we're sticking with the first Activity, we're going to need to make all of our content changes to the views in the Activity. This means setting the visibility on the TabLayout to View.GONE and potentially lots of changes to the rest of the views depending upon what your layout contains.
I noticed that you didn't mention a ViewPager at all. Typically, this is what will be used with a TabLayout to swap between Fragments when you click on each tab. You could have all of your tabs' content in separate Fragments and then when you click on a CardView, just swap that tab's Fragment out for a different one and hide the TabLayout.
So, to answer your question, it is easier to just open a new activity, but it is possible to not use a second activity if you want to put in the work to modify your first one in runtime.
I have this layout that Half of the screen is framelayout and the other half is buttons.
The framelayout has a fragment.
And my buttons on the other half has some commands that will change the views of the fragment.
But my problem is, How would I know if the button is clicked which is inside the activity to tell the fragment that button is clicked.
I cant put the button inside the fragment because the button will be used on other fragment. If there is only a way.
The easiest way is using interfaces. Define an interface inside your fragment, and let the activity implement that interface.
Check this link: https://developer.android.com/training/basics/fragments/communicating.html
Is it possible to disable an activity elements when it loads a fragments?
I have a program which has an activity and two fragments. I put a container in activity. When I put two buttons in activity and load each fragment by clicking the button, fragment loads on the activity, but when I click in the position of buttons which are under fragment(or in the large screen next to it), they do some actions, however I don't like it. The buttons should not be clickable.
As a simple solution I create a third fragment and put my buttons in it and load it as a default view in the activity.
I was wondering is it possible to do this without using third fragment.
If you do not want clicks to propagate to below layers you can specify android:clickable="true".
In your case define android:clickable="true" in the bottom layout of your fragments layout xml file to stop any clicks to the activity below.
mach's solution is great, but i can suggest a solution that will be helpful if you want to do more actions in the future than just disabling buttons.
You can simply have your activity implement an Interface "OnFragmentLoaded" for example which has a single method onLoaded()
and in your fragment in your onAttach(Activity ac) method you can do the following
((OnFragmentLoaded) ac).onLoaded()
and you activity would implement onLoaded() to do what ever you want
I want to make something like transitions between ViewControllers in iOS 7 but in Android, is it possible?
Explanation: please look at image below, I have main Activity which has ViewPager inside, so we can swipe between Fragments. I want to call another Activity (or Fragment) from each Fragment (blue on image) swiping to bottom or to top but this action should be done smoothly like in ViewPager.
You can intercept swipe up and down gestures and set items in viewpager accordingly. Please read this guide on how to intercept swipes in various directions.