I am programmatically creating view in Android. Parent layout is RelativLlayout and I'm adding two views in it. First is ListView and second is custom view. I want my second custom view to come on top of the list, but somehow it is getting hidden behind the ListView. How do I make sure that my custom view is on top.
Views get placed in the order you add them to their parent views. The view added last will be on top. You might also want to try
View.bringToFront() http://developer.android.com/reference/android/view/View.html#bringToFront()
Try to use: View.bringToFront();
Solution 1 - View#bringToFront()
View.bringToFront() should work if used properly. Maybe you forgot this (source: http://developer.android.com/reference/android/view/View.html#bringToFront()):
Prior to KITKAT this method should be followed by calls to requestLayout() and invalidate()
Solution 2 - reattach view
If View.bringToFront() will not work try to remove and add the view again. The advantage is that it has the same code on pre-KITKAT versions too.
I am doing it this way in my code:
ViewGroup parentView = (ViewGroup) (listView.getParent());
parentView.removeView(addFab);
parentView.addView(addFab);
Use FrameLayout, frame layout shows last added view on top..
Try this :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<YourCustomView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" />
</RelativeLayout>
Please try adding android:elevation attribute to your view in the XML. It will always place your custom view over the ListView.
Again: Views get placed to the layout in the order you add it. Question is: is it realy hidden or does it not render?. Check LogCat and Console for errors. If you only add this single Custom View to your layout, does it get rendered without any problems? If so, ensure you realy add your custom to the same parent view (group), as you add your ListView. If you don't get any further, provide de respective code sample.
Give an elevation to the view which you want to bring up.
android:elevation="2dp"
This works for me :
<RelativeLayout
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="220dp"
android:gravity="bottom"
android:orientation="vertical"
android:theme="#style/ThemeOverlay.AppCompat.Dark">
<ImageView
android:id="#+id/details_wrapper"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:paddingBottom="16dip"
android:scaleType="centerCrop"
android:src="#drawable/temp_nav_image">
</ImageView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/nav_header_vertical_spacing"
android:text="Kapil Rajput"
android:textStyle="bold"
android:textColor="#android:color/black"
android:textAppearance="#style/TextAppearance.AppCompat.Body1"/>
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#android:color/black"
android:textStyle="bold"
android:text="kapil#gnxtsystems.com"/>
</LinearLayout>
</RelativeLayout>
I used relative layout and the order of the views somehow determines which one is on top.
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1">
<SeekBar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:splitTrack="false"
android:layout_alignParentTop="true"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"/>
In this layout, the textview will be on top of the seekbar
Make parent view as relative layout and add your both view in xml.It wont work for Linear Layout.
And then add FirstView.bringToFront() programtically.
<RelativeLayout 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:background="#mipmap/bg"
android:orientation="vertical"
android:padding="15dp">
<ImageView
android:id="#+id/imgIcon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_gravity="center"
android:layout_marginBottom="-30dp"
android:layout_marginTop="30dp"
android:src="#mipmap/login_logo" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/imgIcon"
android:layout_gravity="bottom"
android:background="#B3FFFFFF"
android:gravity="center"
android:orientation="vertical"
android:paddingLeft="10dp"
android:paddingRight="10dp">
<View 1/>
<View 2/>
</LinearLayout>
Java file
imgIcon.brigtToFront();
what you should do is using android:layout_below or android:layout_above programmatically. so you should do this:
RelativeLayout.LayoutParams params= new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.BELOW, R.id.below_id);
viewToLayout.setLayoutParams(params);
and i suggest you take a look at this answer
hope this helps
Related
I have a layout something like this:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="10dp"
android:background="#ff303f"
android:id="#+id/layout">
<ImageView
android:id="#+id/picture"
android:layout_width="300dp"
android:layout_height="300dp"
android:layout_centerInParent="true"/>
<Button
android:id="#+id/cancel"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_alignRight="#id/picture"
android:background="#drawable/cross_out"/>
</RelativeLayout>
I inflate it using the usual layout inflator service, set up some functionality to the button and an image to the imageview (all images are of same size and aspect ratio).
After that, I add this view to my fragment's layout which is nothing but a ScrollView which is a parent, it has a child linear layout that I call 'map' and simply add it to the map.
Expected : The added layouts should get added properly and I can scroll through it.
Actual : If more than 2 are added, the first one gets eaten up. I can see it half or sometimes it is completely eaten up. :\
Any idea whats going on here? Thanks a lot for your time.
EDIT:
Here's the layout file I add the inflated layout into:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f6ff45">
<LinearLayout
android:id="#+id/map"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#43ff44"
android:orientation="vertical"
android:layout_margin="10dp"
android:layout_gravity="center"
android:layout_marginTop="15dp">
</LinearLayout>
</ScrollView>
I also forgot to mention that after adding 3 or more of these layouts, I realized there's unnecessary empty space in the end. :\
If you have some android:layout_gravity or gravity property in your ScrollView, that may be the reason. Try deleting it, or make it center_horizontal.
Try this code for your layout file;
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f6ff45">
<LinearLayout
android:id="#+id/map"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#43ff44"
android:orientation="vertical"
android:layout_margin="10dp"
android:layout_gravity="center"
android:layout_marginTop="15dp">
</LinearLayout>
</ScrollView>
As I mentioned before, android:layout_gravity="center"in this LinearLayout causes this problem. Because it doesn't only horizontally center but also verticelly center the contents. It means when they are longer than the available height, the center part will appear. I only changed it into android:layout_gravity="center_horizontal" and the problem is fixed.
I made an android app that contain scrollview layout and inside it AbsoluteLayout, the problem is I can't display the bottom of the layout it only display the top of the layout. I tried to use layout_marginBottom in the AbsoluteLayout but it didn't work.
Use RelativeLayout instead of AbsoluteLayout. Also don't scroll the total layout. Just scroll the View only.
Check it once:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_marginLeft="40dp"
android:layout_marginRight="40dp"
android:layout_marginTop="40dp"
android:background="#drawable/bg" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="300dp" >
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="TextView" />
</ScrollView>
<Button
android:id="#+id/btn1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Button" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/btn1"
android:layout_centerHorizontal="true"
android:layout_marginBottom="27dp"
android:text="#string/s3"
android:textSize="16sp"
android:text="TextView" />
</RelativeLayout>
Use RelativeLayout and set left and right margins like
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
lp.leftMargin = x;
lp.topMargin = y;
True , absolute layout is deprecated . Also , here is a tip :
When creating an xml layout for Android , the easiest way to check for error is using the "graphical layout" tab of the xml layout file . . Use an appropriate device configuration ( match your device ) and the API version , reproduce that error and see if changing the layout parameters help .
use property android:fillViewPort=true inside ScrollView as follows
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:fillViewport="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/bg"
android:orientation="vertical" >
I have the Layouts as you can see in the picture (sorry I cannot post them normally yet):
https://dl.dropboxusercontent.com/u/28640502/Unbenannt.bmp
However, when I execute the app I can only see the camera preview and not the text nor the SeekBar. I know they work, because when I reduce the size of the camera I can see them and interact, but if I want the camera to be like background and then the children over it, it doesn't work.
I have been checking a lot of threads with similar problems but I don't find the solution:
1, 2, 3... Any idea? Thanks a lot!
Here is my xml code just in case:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.55"
android:orientation="vertical" >
<FrameLayout
android:id="#+id/camera_preview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="fill">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="#+id/show_height"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5sp"
android:layout_marginRight="10sp"
android:layout_weight="0.12"
android:text="H" />
<SeekBar
android:id="#+id/select_height"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_margin="5sp"
android:layout_weight="0.91" />
<TextView
android:id="#+id/show_distance"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.06"
android:text="Dist" />
</LinearLayout>
</FrameLayout>
</LinearLayout>
try to input both of your layouts in relative layout for example
<LL>
<RL>
<FL>
</FL>
<LL>
</LL>
</RL>
</LL>
this is hapenning because of overlaiyng of LL by FL
You could use the bringToFront() method of the View class.
SeekBar seeker = (SeekBar)findViewById(R.id.select_height);
seeker.bringToFront();
Alernatively you could use the sendToBack() function to put a view behind other views.
Also remember that a view's z-index is determined by the order in which the view is declared in the xml layout file.
I'd also suggest changing the camera preview layout and it's first child layout to be siblings. The one added last in the xml file will be on top.
Can someone explain to me why the ImageView is not appearing above the LinearLayout?
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/rev_main"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<!-- some stuff in here -->
</LinearLayout>
<ImageView
android:id="#+id/rev_arrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/arrow"
android:layout_above="#id/rev_main"
/>
</RelativeLayout>
I don't get it.
This happens when you specify alignment relative to another layout. The solution I found was to go the other direction.
Instead of telling the ImageView to be above the LinearLayout, tell the LinearLayout to be below the ImageView.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/rev_main"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/rev_arrow">
<!-- some stuff in here -->
</LinearLayout>
<ImageView
android:id="#+id/rev_arrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/arrow"
/>
</RelativeLayout>
The following should work for you:
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/rev_arrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/arrow"
android:layout_alignParentTop="true"
/>
<LinearLayout
android:id="#+id/rev_main"
android:layout_width="fill_parent"
android:layout_below="#id/rev_arrow"
android:layout_height="wrap_content">
<!-- some stuff in here -->
</LinearLayout>
</RelativeLayout>
I had an similar problem by creating a custom optionsMenu. The simplest way to set z-order of views was to do it programmatically. If you want to switch the order sometimes, your should easily call:
ImageView yourImageView = (ImageView)findViewById(R.id.rev_arrow);
yourImageView.bringToFront();
I don´t know if it is adaptive to your application, but in my case it works perfect. If you need more code, let me know.
If you have such problem in ListView make sure that you use proper inflation method. Parent view group must be specified for correct inflation.
mLayoutInflater.inflate(R.layout.listitem, parent, false);
Don't use
mLayoutInflater.inflate(R.layout.listitem, null);
So my layout looks basically like this:
<ScrollView>
<RelativeLayout>
<BunchOfViews/>
<ImageView android:layout_alignParentBottom="true"/>
</RelativeLayout>
</ScrollView>
I have the ScrollView so all of the layout always is visible no matter the height of the screen. The problem is that on a very high screen, I still want my ImageView to be at the bottom. However, a child of a ScrollView don't seem to have a defined bottom. The View is placed at the top of the layout. How can I solve this problem in a neat way?
I ran into the same issue. I never could find a very pleasing solution, but here is how I did it. Maybe someone else has a better way, I hate adding layouts that don't do anything.
My hack was to add a dummy linearlayout at the bottom of the scrollview that has fill_parent to take up all the room and force the scrollview to fill the screen. Then add whatever component I want to that linearlayout.
Here is one of my layouts that does this:
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:fillViewport="true" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="15px" >
<!-- bunch of components here -->
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="#+id/spinner"
android:layout_marginTop="5px"
android:gravity="center_horizontal|bottom"
android:paddingTop="2px" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="20px"
android:paddingRight="20px"
android:text="Delete" />
</LinearLayout>
</RelativeLayout>
</ScrollView>
I had the same issue and found this page:
http://www.curious-creature.org/2010/08/15/scrollviews-handy-trick/
Basically, you set the ScrollView's android:fillViewport to true, which will allow the child view to expand to the same height as the ScrollView itself, filling out the space. You then just need to have one of the child controls' layout_height set to fill_parent and layout_weight to 1, causing that control to "spring" to fill the empty space.
Note that if the contents of the ScrollView are already tall enough to fill the ScrollView, the android:fillViewport has no effect, so the setting only kicks in when needed.
My final XML looks like similar to this:
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true">
<LinearLayout
android:orientation="vertical"
android:layout_height="wrap_content">
<LinearLayout
android:layout_height="fill_parent"
android:layout_weight="1">
<!-- this expands to fill the empty space if needed -->
</LinearLayout>
<!-- this sits at the bottom of the ScrollView,
getting pushed out of view if the ScrollView's
content is tall enough -->
<ImageView
android:layout_height="wrap_content"
android:src="#drawable/footer_image">
</ImageView>
</LinearLayout>
</ScrollView>
it seems that the linearlayout isn't necessary, all that is important is the fillViewPort.
you could just use
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottomParent="true">
now that you have specified the relativelayout to be at least the size of the screen.
its work for me perfectly android:fillViewport="true"
Joel Malone's answer Adding view to bottom of layout inside a scrollview does that trick. My solution is almost the same, except that I use Space widget to do the work of filling the rest height inside the parent layout. Like this:
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
>
<LinearLayout
android:orientation="vertical"
android:layout_height="wrap_content"
>
<android.support.v4.widget.Space
android:layout_height="match_parent"
android:layout_weight="1"
/>
<ImageView
android:layout_height="wrap_content"
android:src="#drawable/footer_image"
/>
</LinearLayout>
</ScrollView>
Attention:
fill_parent in the other answers is noted as deprecated for a long time;
Compare to an empty LinearLayout to fill the rest of parent layout, I think Space is much more appropriate(it's designed to do that job.)
Finally, don't forget that important attribute at the beginning of ScrollView: android:fillViewport="true". They together make this trick.
just put this attribute android:fillViewport="true" to your ScrolView
and you will got what you need
On your view that you want to be at the bottom use android:gravity="bottom"
From: http://code.google.com/p/k9mail/source/browse/k9mail/trunk/res/layout/account_setup_basics.xml?r=1314
This should help you:
<RelativeLayout
android:layout_marginTop="-45dip"
android:padding="0dip"
android:layout_alignParentBottom="true"
android:gravity="bottom|right"
android:background="#android:drawable/bottom_bar"
android:layout_height="fill_parent"
android:layout_width="fill_parent">
<Button
android:id="#+id/manual_setup"
android:text="#string/account_setup_basics_manual_setup_action"
android:minWidth="#dimen/button_minWidth"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginBottom="-4dip"
android:layout_alignParentLeft="true"
android:layout_centerVertical="false"
/>
<Button
android:id="#+id/next"
android:text="#string/next_action"
android:minWidth="#dimen/button_minWidth"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:drawableRight="#drawable/button_indicator_next"
android:layout_marginBottom="-4dip"
android:layout_alignParentRight="true"
android:layout_centerVertical="false"
/>
</RelativeLayout>
ScrollView view = new ScrollView( this );
ScrollView.LayoutParams lps = new FrameLayout.LayoutParams( FILL_PARENT, FILL_PARENT, Gravity.CENTER );
LinearLayout layout = new LinearLayout( this );
// what ever you want in the Layout
view.addView( layout, lps );
I tried alot to align the Scroll View to bottom of the screen but thats not possible according to this link.
https://newbedev.com/how-do-i-align-views-at-the-bottom-of-the-screen
The way i found was to create a view with 1dp height and aa id (lets say android:id="#+id/bottomView") at the bottom of your XML page.
now just add these attributes to your scroll view..
<ScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical"
android:fillViewport="true"
android:layout_alignBottom="#+id/bottomView"
>
Here is how you can use a ConstraintLayout to align the image view at the bottom:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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:fillViewport="true">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="#+id/content_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/text_view"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Text 1"
app:layout_constraintBottom_toTopOf="#+id/space_view"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="parent" />
<Space
android:id="#+id/space_view"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toTopOf="#+id/image_view"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/text_view" />
<ImageView
android:id="#+id/image_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="..."
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/space_view" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>