The main menu for my app shows 10 options, arranged in 5 rows. I use a really simple layout involving two listviews, as follows:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ListView
android:id="#+id/list1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:fadeScrollbars="true"
android:divider="#00000000" />
<ListView
android:id="#+id/list2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:fadeScrollbars="true"
android:divider="#00000000" />
</LinearLayout>
I use a fairly plain row layout for phones and a fancier one for tablets, and it all works out very nicely. But when the phone is held in portrait mode, the two listviews begin to scroll. That is fine, except that they scroll independently. It would be better if they scrolled in sync. Any ideas how I can achieve this? It is not a deal breaker, so I am looking for a simple solution, but I cannot think of one.
The solution is incredibly simple - I just use a gridview instead of two listviews. Job done.
Related
I'm new in android. I want to show activity by moving up and down. (We can see it in many music players). But I don't know how to do it. Please give me some solutions, examples or suggestions.
Как дела?
Suggestion: You may find all crazy animation, including 2D and 3D animation in the following link. I did not have enough time find the exact one but I am sure they exist in this following collection.
https://android-arsenal.com/tag/6?sort=created
Advice: You can easily achieve it with Animation APIs in Android SDK. Or you may find some relevant answers here
Make activity animate from top to bottom
Good luck.
Finally, I decided to use Android Bottom Sheet. Here is code example:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="340dp"
android:background="#android:color/darker_gray"
android:orientation="vertical"
app:behavior_hideable="true"
app:behavior_peekHeight="80dp"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior">
<TextView
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="#color/colorAccent"
android:gravity="center"
android:text="#string/bottom_sheet_peek"
android:textColor="#android:color/white" />
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="#string/bottom_sheet_content"
android:textColor="#android:color/white" />
</LinearLayout>
I want to add constrainlayout only two the last two floating action button with nested framelayout. any help would be highly appreciated. My main idea is to able to move and position the floating action button from graphical user interface.
I have notice that android gravity help to put button at right and the center from right with
android:layout_gravity="right|center"
how can i add a button at right but between center and end at bottom.
<FrameLayout 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="wrap_content"
android:layout_height="wrap_content"
android:background="#000000"
tools:context=".MediaPresentationActivity"
android:id="#+id/FrameLayout">
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<VideoView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/videoViewPresentation"
android:layout_gravity="center" />
<ImageView
android:id="#+id/imageViewPresentation"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="left|top"
android:background="#ffffff"
android:src="#drawable/serv24logobig" />
</FrameLayout>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
</LinearLayout>
</LinearLayout>
//*how to add only below two floating action button as constrainlayout //
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_gravity="right|center"
android:src="#android:drawable/stat_sys_phone_call"
android:visibility="visible"
app:backgroundTint="#android:color/holo_red_dark"
app:elevation="12dp"
app:rippleColor="?android:attr/colorActivatedHighlight" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_gravity="right|center"
android:src="#android:drawable/stat_sys_phone_call"
android:visibility="visible"
app:backgroundTint="?android:attr/colorMultiSelectHighlight"
app:elevation="12dp"
app:rippleColor="?android:attr/colorActivatedHighlight" />
</FrameLayout>
FrameLayouts only allow ONE child (well they allow N children, but they overlap, because it doesn't support children positioning, rather it expects them to take all the available space), so if you want to use a ConstraintLayout to position two items inside a FrameLayout, then you need to ensure that the children of your FrameLayout, is a ViewGroup that allows positioning of its own children.
Let's see what you got.
Your Root is a FrameLayout, perhaps you should consider making it a ConstraintLayout to begin with...
You're asking your Root layout to wrap its contents. Unless this is a custom view, this is somewhat frowning, but not wrong; since I don't know how you're using this, it's hard to tell if this is the correct approach in this case.
I don't know how your UI should look, but from what I see, you have a series of nested LinearLayouts, Vertical, then Horizontal to have an ImageView and a VideoView... not sure how you expect these to be positioned.
Down Below you have an empty LinearLayout... (?)
and then you tossed the two FABs.
This is not going to work. I suggest you revisit your entire Layout (which, btw, is incorrect as pasted, because you're closing the FrameLayout twice...).
If you post an image of what your desired output is, perhaps we can help you better understand where your problem is. As it is, it's not possible to determine.
The answer to your question, as written at this time is:
"How can I add a constraint Layout onlo to the last two FABs?"
You can't (for the purposes I think you want), but if you really want to see why, and what would happen:
Simply add, inside your FrameLayout this:
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
<!-- YOUR FABS GO HERE -->
</androidx.constraintlayout.widget.ConstraintLayout>
This will obviously NOT LOOK THE WAY YOU WANT, but that's why I asked you in the comment above, "show us what you want, we need a minimal reproducible example of what you need".
There was a reason why I asked that, not to annoy you, but to help you. You chose to ignore it, and that's as far as I can go to help you with the information I have.
I am new to both Stack Overflow and Android Studio and learning to code now.
I did a basic user and password layout in Android Studio like this:
When I ran this on emulator, it displays the widgets like this:
I tried to change the width of the EditText fields, buttons, but nothing I have tried seems to be working.
How do I solve this?
What am I missing or am I doing something wrong ?
Layout code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
android:weightSum="1">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="233dp"
android:scaleType="fitStart"
android:visibility="visible"
app:srcCompat="#drawable/worldcurrency" />
<TextView
android:id="#+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Enter ammount"
android:textSize="18sp" />
<EditText
android:id="#+id/dollar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10"
android:inputType="numberDecimal" />
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="convert"
android:text="Convert" />
<TextView
android:id="#+id/rupees"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Your layout's parent is a ConstraintLayout, but it's lacking every constraint. ConstraintLayout is characterised by the ability to set constraints to every view, forcing its behaviour across screens of different sizes and orientations.
If you really want to use a ConstraintLayout I suggest taking a look at the ConstraintLayout Documentation. Once you've properly set the constraints, you should have an xml like this (note the constraint* attributes in my Views.
So, your layout has no constraints, it's likely it will end at "random" positions. Moreover, you've set the views coordinates with tools, which is valid only for the layout preview, not for runtime. And moreover, the use of absolute coordinates is very not recommended, since it can cause problems across different screen sizes.
If ConstraintLayout is an optional choice for you, you can change the layout parent to a LinearLayout with vertical orientation, I think it's more suitable for the layout you're building (I'm assuming this by your screenshots).Hope I helped, let me know. Good luck and happy coding!
My project also uses Xamarin with MvvmCross, but I don't think this will effect the answer since the problem is all view-layout/axml related.
I have a GridView that summarizes a list of contacts. When clicking on this grid view, I would like the user to be taken to another screen to add more contacts to this list (so there is more space).
Subscribing to the GridView's OnClick event gives me an exception, saying I should be subscribing to the item click event, so I have done this using a clickable relative layout that surrounds the GridView (and its accompanying empty image view) as such:
...
<RelativeLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:id="#+id/addContactsRelativeLayout"
android:clickable="true">
<ImageView
android:id="#+id/empty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="#drawable/ic_add" />
<Mvx.MvxGridView
android:id="#+id/addContactsGridView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
local:MvxBind="ItemsSource Contacts"
local:MvxItemTemplate="#layout/contact_summary_item"
android:numColumns="auto_fit"
android:stretchMode="columnWidth"
android:columnWidth="55dip"
android:gravity="center" />
</RelativeLayout>
...
This works fine when the GridView is empty, and the empty ImageView is shown. However, when there are items in the GridView, the RelativeLayout no longer seems to exist and clicks over the GridView can be seen to highlight items on the GridView. This means the user is not taken to the screen to edit their contact list.
I have tried several different configurations and attributes from similar questions on SO, but I think the addition of an empty view is causing problems. Any help would be greatly appreciated.
Ok, after a lot more playing around I found a solution.
Essentially it's adding another relative layout, higher in the z-index and therefore above the 'real' contents, within the surrounding relative layout.
...
<RelativeLayout
android:layout_height="wrap_content"
android:layout_width="match_parent">
<ImageView
android:id="#+id/empty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="#drawable/ic_add" />
<Mvx.MvxGridView
android:id="#+id/addContactsGridView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
local:MvxBind="ItemsSource Contacts"
local:MvxItemTemplate="#layout/contact_summary_item"
android:numColumns="auto_fit"
android:stretchMode="columnWidth"
android:columnWidth="55dip"
android:gravity="center"
android:focusable="false"/>
<RelativeLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
android:clickable="true"
android:id="#+id/addContactsRelativeLayout"/>
...
Then just move all your click listeners to listen to the relative layout at the bottom.
so im trying to use a relative layout (for basic app tabs at the bottom of the screen) and it is not showing when i place it inside the LinearLayout after 2 other layouts (a LinearLayout and a ScrollView). The ScrollView contains several textViews and scrolls nicely on its own and the linearlayout before it also works nicely, but the relativelayout that i have tried to place at the bottom of the screen does not work.
Here is the general code for what i am trying to do:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:orientation="vertical"
android:background="#drawable/common_bg"
android:layout_height="fill_parent">
<LinearLayout android:layout_width="fill_parent"
android:layout_height="50dp">
<TextView android:layout_height="50dp"
android:text="Heading"
android:gravity="center"
android:textSize="17dp"
android:textColor="#color/white"
android:textStyle="bold"
android:layout_width="fill_parent">
</TextView>
</LinearLayout>
<ScrollView android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scrollbars="none"
android:layout_gravity="top"
android:layout_marginBottom="60dp">
<LinearLayout android:layout_width="fill_parent"
android:orientation="vertical"
android:paddingTop="15dp"
android:layout_weight="1"
android:paddingLeft="15dp"
android:paddingRight="15dp"
android:layout_height="fill_parent">
<TextView android:layout_width="wrap_content"
android:textColor="#color/white"
android:textSize="18dp"
android:textStyle="bold"
android:text="#string/text"
android:layout_height="wrap_content">
</TextView>
</LinearLayout>
</ScrollView>
<RelativeLayout
android:id="#+id/bottomMenu"
android:layout_width="wrap_content"
android:layout_height="60dp" />
</LinearLayout>
UPDATE: the Relative layout that im using is custom in a way that i cant actually show the code for it here, but it contains a radio group with several buttons.
UPDATE 2: Ok, so I solved the problem by manipulating the layout_height="wrap_content" on the 3 layouts (the first linear, the one holding the scroller, and the bottom relativelayout) as well as manipulating the layout_wieght of each of them until I was satisfied with the way it looked... it doesnt seem like this is the best possible solution, but it worked so i cant complain too much lol...
The relative layout in itself wont be displayed in an xml graphical layout or when you are running the app, it needs a child element to occupy the parent layout, try putting a text view inside the relative layout, it'll be displayed, position it right below the linear layout having the scroll view, it'll work properly, i just tried it with your code and it works