as you can see the backButton is behind the frame layout.
but i want to make this button clickable unless its visible.
im using scrollview, which means i cannot place BackButton Above.
because it will colapse when i scroll it up.
Heres the XML
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:layout_width="match_parent"
android:layout_height="230dp"
android:src="#drawable/background"
android:scaleType="centerCrop">
</ImageView>
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/backButton"
android:clickable="true"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_alignParentTop="true"
android:layout_marginLeft="20dp"
android:layout_marginTop="20dp"
android:src="#drawable/ic_arrow_back_white"/>
</FrameLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="100dp"
android:scrollbars="none">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:weightSum="1">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.74"
android:descendantFocusability="blocksDescendants">
//SOME CONTENT HERE, REMOVED FOR READABILITY
</FrameLayout>
</LinearLayout>
</ScrollView>
</FrameLayout>
Simple question. How?
The problem here seems to be that neither you have only a single child inside your FrameLayout nor do you use the `android:layout_gravity" attribute. See the docs:
FrameLayout is designed to block out an area on the screen to display a single item. Generally, FrameLayout should be used to hold a single child view, because it can be difficult to organize child views in a way that's scalable to different screen sizes without the children overlapping each other. You can, however, add multiple children to a FrameLayout and control their position within the FrameLayout by assigning gravity to each child, using the android:layout_gravity attribute.
From the image you have uploaded I can see that the whole layout can be easily implemented using new Support Libraries in Android.
And if that is your case the whole Layout can be converted changed to use a CoordinatorLayout instead of using the FrameLayout directly. Check the following image. If that is what you want then follow along and if it is not exactly what you want you can IGNORE this Answer:
If you want something like this then FrameLayout might be a hard way to go while there exist support design libraries that will make your job easier.
In this case its CoordinatorLayout and Collapsing Tool Bar but even if you do not want the Collapsing toolbar still Coordinator Layout is the best Alternative for this!
If you want to know more about support design Libraries then here is a post Android Developers Google Blog.
Coordinator Layout it is easily to make layout of the nature like yours and its a smart alternative, For the image I have uploaded the code will be something like this:
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.sample.foo.usingcoordinatorlayout.FabAndSnackbarActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBar"
android:layout_width="match_parent"
android:layout_height="300dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsingToolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginStart="48dp"
app:expandedTitleMarginEnd="64dp"
app:title="#string/collapsing_toolbar">
<ImageView
android:id="#+id/toolbarImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
android:src="#drawable/bg"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="28sp"
android:lineSpacingExtra="8dp"
android:text="#string/long_latin"
android:padding="#dimen/activity_horizontal_margin" />
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_margin="#dimen/activity_horizontal_margin"
android:src="#drawable/mascot_icon"
app:layout_anchor="#id/appBar"
app:layout_anchorGravity="bottom|end" />
</android.support.design.widget.CoordinatorLayout>
For Learning more about all this Support Library and more other interesting features, check this link its a good blog post about all these! Always remember you will always add support design in your app.gradle file just like appcompat. But the description from those links will consist all these information. Happy Coding!
Make your covering framework dont custom the touch event to let your underneath button be able to handle the touch event. So it is clickable.
Related
As we can see from the below sample, on changing the visibility of the view from gone to visible and vice versa, the appbar automatically expands and scrim drawn is shown as well.
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/crl_parent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
android:fillViewport="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/abl_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
app:contentScrim="#drawable/shape_rectangle_grdient_red_yellow"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_collapseMode="parallax">
<FrameLayout
android:id="#+id/fl_class"
android:layout_width="match_parent"
android:layout_height="#dimen/d_280dp"
android:background="#color/colorPlaceholderBg">
<ImageView
android:id="#+id/iv_class"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:src="#color/colorPlaceholderBg" />
<ProgressBar
android:id="#+id/pb_dp_progress"
android:layout_width="#dimen/d_20dp"
android:layout_height="#dimen/d_20dp"
android:layout_gravity="center"
android:visibility="visible" />
</FrameLayout>
<RelativeLayout
android:id="#+id/rl_toolbar"
android:layout_width="match_parent"
android:layout_height="#dimen/toolbar_default_height"
android:background="#drawable/shape_rectangle_transparent_grey_gradient">
<ImageView
android:id="#+id/iv_back"
... />
</RelativeLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/tl_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:minHeight="#dimen/toolbar_default_height"
android:visibility="visible"
app:contentInsetStart="#dimen/d_0dp"
app:layout_collapseMode="pin">
<include layout="#layout/view_toolbar" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/fragment_class_details_content" />
</android.support.design.widget.CoordinatorLayout>
This the code for the outer layout. As can be seen from the above layout that the pattern is mostly standard. I have tried replicating the bug in new sample but of no use. The initial problem seem to be changing the height of nested scroll view on runtime seems to be the problem but that is not the case. I tried to setExpand(false) on the click of the button but that is not working as well.
<img src="https://i.imgur.com/YGTT3oL.gif" title="source: imgur.com" />
Link to demo gif is here: https://i.imgur.com/YGTT3oL.gif
I bet the problem is caused by app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
You have to define the behavior you want when scrolling, check out this article: https://medium.com/martinomburajr/android-design-collapsing-toolbar-scrollflags-e1d8a05dcb02
Since I dont know what behaviour do you want, read the article and choose yourself. Hiding and showing the view is triggering those flags.
In your #layout/fragment_class_details_content check if
app:layout_behavior="#string/appbar_scrolling_view_behavior"
is present in the parent layout.
Also change app:layout_scrollFlags="scroll|exitUntilCollapsed|snap" to
app:layout_scrollFlags="scroll|exitUntilCollapsed"
Add this attribute to the CollapsingToolbarLayout
app:toolbarId="#+id/tl_toolbar"
Add this attribute to Toolbar:
app:popupTheme="#style/AppTheme.PopupOverlay"
Extract your gone/visible layout from android.support.design.widget.CollapsingToolbarLayout.
Too much nesting you did so avoid nesting and Use constraint layout
Here is a link to the whole project so that you can reproduce the problem:
https://github.com/FaridArbai/TapExchange/tree/master/TapExchange
I would like to ask for help with an issue that I've been struggling with for about two days and yet found no solution in spite of the thorough research that I have done.
Basically, I have an AppBarLayout with a CollapsingToolbarLayout inside whose mission is to collapse a background image when the user scrolls down a RecyclerView of CardViews. The problem arises when I try to scroll down that RecyclerView once the Image is fully collapsed: It won't scroll if I touch one of the cardviews that compose the RecyclerView!
Here is the look with no collapse (here I can scroll with no problem):
Uncollapsed Image, able to scroll in any direction
And here is the look once the image is collapsed (here I cannot scroll down if my finger touches any cardview that compose the RecyclerView):
Collapsed Image, unable to scroll down if I touch one of the cardviews
The code for the whole layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".profiles.PersonalProfile"
android:background="#FCFCFC">
<android.support.design.widget.AppBarLayout
android:id="#+id/personal_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/personal_collapsing"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
app:contentScrim="?attr/colorPrimary"
app:title=""
app:titleEnabled="false">
<ImageView
android:id="#+id/personal_image_background"
android:layout_width="match_parent"
android:layout_height="340dp"
android:scaleType="centerCrop"
android:src="#drawable/profile_background"/>
<android.support.v7.widget.Toolbar
android:id="#+id/personal_toolbar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:title="">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Space
android:id="#+id/avatar_collapsed_target"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginLeft="0dp"/>
<TextView
android:id="#+id/personal_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18dp"
android:layout_gravity="center"
android:layout_marginLeft="10dp"
android:text="Unknown Username"/>
</LinearLayout>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/section_selection_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
app:srcCompat="#drawable/ic_action_add" />
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/personal_image_foreground"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginTop="120dp"
android:layout_gravity="top|center_horizontal"
android:src="#drawable/executive"
app:collapsedTarget="#id/avatar_collapsed_target"
app:layout_behavior="com.faridarbai.tapexchange.graphical.CollapsingAvatarBehavior"
android:elevation="5dp"/>
<LinearLayout
android:id="#+id/personal_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_anchor="#id/personal_image_foreground"
app:layout_anchorGravity="bottom|center"
android:paddingTop="30dp">
<TextView
android:id="#+id/username_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Unknown Username"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar" />
</LinearLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/personal_nested_scroll_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:fillViewport="true">
<android.support.v7.widget.RecyclerView
android:id="#+id/personal_sections_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="0dp" />
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
I am building with the API 25 and using GUI utilities from version 25.4.0. I would be extremely grateful if anybody can help.
Thanks
EDIT
I tried with SDK nº 27 and 27.1.1 building tools, supressed both "snap" and the NestedScrollView and still got the same problem: Once the background image has collapsed the RecyclerView is unable to scroll up if I initially put my finger on a CardView from the RecyclerView. This is quite odd because WhatsApp, Facebook and Telegram use a very similar Layout and they don't have this problem so there should be a well accepted work around.
Anyone to help?
why you are using RecyclerView inside NestedScrollView?!. if yo have more items with different layouts you can use recyclerView With different ViewTypes but i won't recommend to use it inside NestedScrollView try to use it Directly and don't forget to put this app:layout_behavior="#string/appbar_scrolling_view_behavior" in the recylerView and it will work.
I want to use
<android.support.v4.widget.NestedScrollView
android:id="#+id/scroll_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/action_bar"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:visibility="gone">
<RelativeLayout
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="220dp">
<ImageView
android:id="#+id/cover_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"/>
</RelativeLayout>
<RelativeLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/image"
android:background="#color/card_background">
<android.support.design.widget.TabLayout
android:id="#+id/topTabs"
style="#style/TextAppearance.Tab"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabBackground="#color/bpWhite"
app:tabGravity="fill"
app:tabMode="fixed"
app:tabTextColor="#color/secondary_text_color"
custom:tabIndicatorColor="#color/secondary_text_color"
custom:tabIndicatorHeight="2dp" />
<View
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_below="#id/topTabs"
android:background="#drawable/tab_layout_drop_shadow" />
</RelativeLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/tab_layout" />
</RelativeLayout>
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
It is not able to scroll, that view-pager or tab-layout is not able scroll I tried all the ways.
1.Disable the touch event in view-pager and enable the touch event for scroll-view.
2.Tried other scroll-views like Nestedscrollview, Parallaxscrollview, Coordinator layout.If I use coordinator layout then not able to change he toolbar.
I used fillviewport true for all the scrollviews. but still it is not able to scroll.
Any Other ways to fix the issue.
You can use view pager without the toolbar, but you can't use the tabs without the toolbar.
Although it remains unclear, what you are trying to achieve here, there is no problem in the layout, really.
If you set up the Design Support Library correctly and
if you did not mess up your listeners with your attempts to disable some touch events and
if you take out the tools:visibility="gone" attribute (in order to show anything that can be scrolled) and
if you decide on a specific height (or wrap_content) for the ViewPager and
optionally if you take out the first RelativeLayouts which is unnecessary,
then you should be able to scroll. At least I am inside the layout editor of Android Studio.
I'm trying to implement the Play Store header image behaviour, without success.
I was able to have the entire page scrolled, but only along with the ImageView inside the CollapsingToolbarLayout.
I used the example at the announcement of Android Design Support library. The XML of the activity as of now looks like this:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.design.widget.AppBarLayout
android:layout_height="192dp"
android:layout_width="match_parent" xmlns:app="http://schemas.android.com/apk/res-auto"
layout_width="wrap_content" layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed" layout_width="wrap_content"
layout_height="wrap_content">
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/imageView" android:layout_gravity="center_vertical" android:src="#android:mipmap/sym_def_app_icon"/>
<android.support.v7.widget.Toolbar
android:layout_height="?attr/actionBarSize"
android:layout_width="match_parent"
app:layout_collapseMode="pin" layout_width="wrap_content" layout_height="wrap_content"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="New Text"
android:id="#+id/textView" android:layout_gravity="center_vertical"/>
</android.support.design.widget.CoordinatorLayout>
I'm pretty sure that something's missing here.
Instead of using ScrollView, you need to wrap your AppBarLayout inside a CoordinatorLayout.
You would also need to put app:layout_behavior="#string/appbar_scrolling_view_behavior" on the ViewGroup immediately following the AppBarLayout that is the main page content.
Here's a layout from Chris Banes' cheesesquare sample app.
When the activity is opened, it shows the top of the RecyclerView layout instead of the top of the activity layout.
Activity layout .xml file:
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="20dp"
android:paddingTop="20dp">
...
<RelativeLayout/>
<View />
<LinearLayout/>
...
<android.support.v7.widget.RecyclerView
android:id="#+id/venue_place_info_gallery_recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"/>
</LinearLayout>
</ScrollView>
Activity onCreate:
RecyclerView galleryRecyclerView = (RecyclerView) findViewById(R.id.venue_place_info_gallery_recycler_view);
galleryRecyclerView.setLayoutManager(new StaggeredGridLayoutManager(gridLayoutColumns, StaggeredGridLayoutManager.VERTICAL));
VenueGalleryAdapter venueGalleryAdapter = new VenueGalleryAdapter(VenuePlaceInfoActivity.this, images);
galleryRecyclerView.setAdapter(venueGalleryAdapter);
The adapter is very simple. It receives the images as an argument in the constructor and the data cannot be changed later on.
I've tried to apply all kinds of settings to the RecyclerView layout, but it works the same with or without them. For example:
galleryRecyclerView.setNestedScrollingEnabled(false);
galleryRecyclerView.setHasFixedSize(true);
galleryRecyclerView.setLayoutFrozen(true);
galleryRecyclerView.setPreserveFocusAfterLayout(false);
UPDATE:
I have found more info on the subject in the answer of another question. It's all because of the ScrollView and RecyclerView not being capable to live together even if you set setNestedScrollingEnabled to true. But it still doesn't give me the resolution of my problem. I need to have some stuff above the gallery RecyclerView and I want to scroll down through all the images (not putting them in a container).
If you want your layout to look good, I would use a CoordinatorLayout with an AppBarLayout as the first element inside it, and the RecyclerView as the second. Inside the AppBarLayout, you should put whatever it is that you would like to have above the RecyclerView. Something similar to this:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#color/white">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|enterAlways"
app:titleEnabled="false">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipChildren="false"
android:clipToPadding="false"
android:orientation="vertical"
android:paddingTop="20dp"
app:layout_collapseMode="parallax">
<!-- stuff you want above your recyclerview -->
</LinearLayout>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</android.support.design.widget.CoordinatorLayout>
</LinearLayout>
Someone does something similar here, just instead of using a toolbar in the appbarlayout, you may use whatever view layouts you'd like. AppBarLayout is an extended Vertical LinearLayout: http://www.basagee.tk/handling-scrolls-with-coordinatorlayout/
just add the following tag on your activity/fragment root layout and you are good to go.
android:descendantFocusability="blocksDescendants"