I'm new to android programming but from how much I have understood of the layouts from the documentation, RelativeLayout is mostly used when you need the views based on some rules and the FrameLayout when you want to overlap views.
But unfortunately for the following program I get the work of FrameLayout done by using RelativeLayout. I got my work done but for understanding, Am I missing something in the difference?
Also, how did the buttons come over my image? (Even the other image is overlapping.)
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/ic_launcher"
/>
<ImageView
android:id="#+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/ic_launcher"
android:layout_alignParentTop="true"
android:layout_alignLeft="#id/imageView1"
/>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/imageView1"
android:gravity="center"
android:orientation="horizontal"
android:weightSum="1.0" >
<Button
android:id="#+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.33"
android:text="Login" />
<Button
android:id="#+id/button2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.33"
android:text="Register" />
<Button
android:id="#+id/button3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.33"
android:text="Try application" />
</LinearLayout>
</RelativeLayout>
The RelativeLayout can use :
android:layout_toEndOf="#id/some_view"
android:layout_toStartOf="#id/some_view"
android:layout_above="#id/some_view"
android:layout_below="#id/some_view"
to make sure views lineup correctly in relation to each other. FrameLayout is very similar except it's only using gravity to put display its views (with no relation).
I would also suggest you to take a look at the ConstraintLayout component. ConstraintLayout allows you to create large and complex layouts with a flat view hierarchy (no nested view groups). It's similar to RelativeLayout in that all views are laid out according to relationships between sibling views and the parent layout, but it's more flexible than RelativeLayout and easier to use with Android Studio's Layout Editor.
RelativeLayout based on relation of views. It is a layout manager that helps you arrange your UI elements based on some rule. You can specify things like: align this to parents left edge, place this to the left/right of this elements etc.
FrameLayout allows placements along Z-axis. That is you can stack your view elements one above the other.
RelativeLayout - As the name suggest in this viewgroup, view are placed relative to each other. Most used property of relativelayout are used are
android:layout_toLeftOf="#id/some_view1"
android:layout_toRightOf="#id/some_view2"
android:layout_above="#id/some_view3"
android:layout_below="#id/some_view4"
android:layout_toendof="#id/some_view5"
android:layout_tostartof="#id/some_view6"
View are placeed relative to each other. It is really helpful while developing complex designed.
FrameLayout - It behaves as a single object view are not placed relative to each but as per to the FrameLayout. FrameLayout takes the size of biggest child view.
android:gravity="center_horizontal|center_vertical|bottom"
Using above property child views position is modified.
Related
I tried Expand ListView method from using the code from the following blog, https://wirasetiawan29.wordpress.com/2016/01/20/membuat-expand-listview-material-design-di-android/
Everything works fine. But if I add a button in FrameLayout then the touchevent for listview item not works properly. Also I tried changing FrameLayout to Relative & also to Linear, but still no success.
<FrameLayout
android:id="#+id/wrapper"
android:layout_below="#+id/rl_title_wrapper"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.AppCompatTextView
android:id="#+id/deskripsi"
android:padding="16dp"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:text="Share"/>
</FrameLayout>
Thanks in advance.
According to Frame Layout description by Google's documentation...
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.
Hence, your original TextView is actually overlapping by the Button (Share). You can use android:layout_gravity="right" to position the button in the right end of the screen, however, then you will have to fix the maxium length of string for TextView, so that it doesn't get overlap by the Button on the right.
If you don't have any problem, might I suggest you to use LinearLayout? It's easier to handle and render by the GPU (As far as I know). Here's an example code of your item...
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/wrapper"
android:layout_below="#+id/rl_title_wrapper"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<TextView
android:id="#+id/deskripsi"
android:padding="16dp"
android:layout_weight="1"
android:layout_gravity="left|center"
android:text="This is a big chunk of description for your listView item. you can write as much as you want...."
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Share"
android:layout_gravity="right|center"/>
</LinearLayout>
You can also use RelativeLayout and GridLayout here.
I hope it answers your question. Cheers!
I have a layout contain one image and 3 text field
I've tried to align the image to right and text field to left but I've failed
I've used
android:layout_gravity="right" for image and left to text but it did not work also I've used end and start in gravity with no success
this is the layout code:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="2dp"
android:layout_marginBottom="2dp"
android:orientation="vertical"
android:background="#drawable/card_background">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<ImageView
android:id="#+id/listthumb"
android:layout_width="80dp"
android:layout_height="50dp"
android:layout_gravity="center_vertical"
android:contentDescription="Rss video thumbnail"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/listtitle"
style="#style/listTitle"
android:maxLines="3"/>
</LinearLayout>
<TextView
android:id="#+id/shortdescription"
android:layout_width="wrap_content"
android:ellipsize="end"
android:maxLines="2"
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/listpubdate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="11dp"/>
</LinearLayout>
</FrameLayout>
Try to use a <RelativeLayout> instead of a <LinearLayout>
With the RelativeLayout you could place a widget depending on the position of another widget
Here the Relative Layout description
Hope this will help, I have not had time to test....
One linear layout should have vertical orientation and contain the 3 text fields.
One linear layout should have horizontal orientation and contain both the above linear layout and the image.
To push two views to the edges of the screen, you can also give each a left/right margin and then put a blank view with weight = 1 in between them.
Please read a bit more on how layouts work on Android and the different types available to you. A LinearLayout will stack the containing Views either Horizontally or Vertically one after the other. A FrameLayout is simply a container and the items within have to position themselves. RelativeLayout allow you to position your views with a relative reference to other views (in your case, you can position your ImageView, and then your 3 TextViews relative to where the ImageView is).
If you can use LinearLayout instead of RelativeLayout, you should do so, as RelativeLayout is always slower, due to having to perform two passes prior to rendering as it needs to measure each view and then also perform the layouts based on that. You might be looking for something like (pseudo-code):
<LinearLayout orientation=horizontal>
<LinearLayout orientation=vertical>
<TextView />
<TextView />
<TextView />
</LinearLayout>
<ImageView />
</LinearLayout>
You have not described your question well . Check below code if it works .
You just forgot to add orientation in linear layout containing one text view and a Image view .
Add Orientation to Your Linear Layout.
Please refer to example below. I want to have the top layout (below encased in red) to be unmoving in a scrollview in my activity. I have a scrollview as the parent layout and then I thought having a relative layout for the top one would work, and align it to the top, but that didn't really work out as it still remained within the scrollview. I would like to have the users have the red-layout box remain static when they scroll down.
I figure I would also have to put in a topMargin at the top of the scrollview or something in order to fit the redbox layout in.
XML Code posted here: http://pastebin.com/bxdREbeG
Do something like this (hand code, for reference only):
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/YourTopStaticView"
android:layout_width="match_parent"
android:layout_height="48dp"> //Or any other height you want
//Contents of the top view
</RelativeLyout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/YourTopStaticView">
//Contents of the ScrollView
</ScrollView>
</RelativeLayout>
As a side note, do not hardcode children into the ScrollView like that. Use the RecyclerView (which is an updated, modern replacement for ListView), which you will be expected to know how to use if you want to move into serious Android programming. It is actually super easy to use, once you get the hang of it :-)
You should use the ScrollView with only one child (official documentation - http://developer.android.com/reference/android/widget/ScrollView.html). According to your xml, your ScrollView is very complicated with a lot of child widgets.
The best option for you is to use a LinearLayout as the root for the whole container, a LinearLayout( or Relative) for the top layout containing the Reset and Save buttons, and a ListView for the long list that you have. ListView takes care of it's own scrolling. So you don't have to worry about that.
This will improve your code performance as well.
This should suit your needs:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout android:id="#+id/topPanel"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="5dp">
<TextView android:id="#+id/label"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:text="Multi TTS Implementation"/>
<Button android:id="#+id/save"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:text="SAVE"/>
<Button android:id="#+id/resetAll"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="#id/save"
android:layout_centerVertical="true"
android:text="RESET ALL"/>
</RelativeLayout>
<ScrollView android:id="#id/scroll"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_below="#id/topPanel"
android:layout_alignParentBottom="true"
android:padding="5dp">
<!-- Your scrollable content here -->
</ScrollView>
</RelativeLayout>
I am trying to program an alternative landscape view file (an xml file) for my app, and I must use FrameLayout instead of LinearLayout (that's what the book said). But Framelayout does not stack well, so we are supposed to use android:layout_gravity and then assign an x/y dimension, for example: android:layout_gravity="center". This example centers something exactly in the middle (both vertically and horizontally).
But my problem is, I have 4 levels on the vertical plane, where I want to place things. A text line, a line with 2 buttons (true, false), another button (cheat), then finally a line with 2 arrow buttons (previous and next). But with the layout_gravity, they only have very crude placements: top, center, bottom. I noticed that if you do not assign anything, they all end up in the upper left corner.
So how do I stack these vertically so they fall nicely spaced from top to bottom? Assigning 2 things the same parameters does not stack them, but rather overlaps them terribly.
Thank you for your help, below is my code. I have not put any gravity layouts in there yet.
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/question_text_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="24dp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="#+id/true_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/true_button" />
<Button
android:id="#+id/false_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/false_button" />
</LinearLayout>
<Button
android:id="#+id/cheat_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/cheat_button" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<ImageButton
android:id="#+id/prev_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/arrow_left"
android:contentDescription="#string/move_back"
/>
<ImageButton
android:id="#+id/next_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/arrow_right"
android:contentDescription="#string/move_forward"
/>
</LinearLayout>
</FrameLayout>
You should use a Relative Layout or Linear Layout to achieve this because the Frame Layout is simply not designed for this.
Here is the api documentation for frame layout-
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.
So controlling the position of child in Frame layout is very much limited,ie only using gravity.
Why does FOOBARZ get layed out all the way at the bottom when no elements are layout_height="fill_parent" in other words, all elements are wrap_content for height?
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/feed_u"
android:layout_width="50dip"
android:layout_height="50dip"
android:layout_marginLeft="5dip"
android:scaleType="centerCrop"
android:drawableTop="#android:drawable/presence_online"
android:text="U" />
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#id/feed_u">
<ImageView
android:id="#+id/feed_h"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#android:drawable/btn_minus" />
<ImageView
android:id="#+id/feed_ha"
android:layout_toLeftOf="#id/feed_h"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#android:drawable/btn_plus" />
<TextView
android:id="#+id/feed_t"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Title">
</TextView>
<TextView
android:id="#+id/feed_a"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Band"
android:layout_below="#id/feed_t">
</TextView>
<TextView
android:id="#+id/feed_s"
android:layout_below="#id/feed_a"
android:text="S"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
</TextView>
<TextView
android:id="#+id/feed_tm"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:text="FOOBARZ"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
</TextView>
</RelativeLayout>
</RelativeLayout>
From the RelativeLayout doc:
Class Overview
A Layout where the positions of the children can be described in relation to each other or to the parent.
Note that you cannot have a circular dependency between the size of the RelativeLayout and the position of its children. For example, you cannot have a RelativeLayout whose height is set to WRAP_CONTENT and a child set to ALIGN_PARENT_BOTTOM
Class documentation
Which is exactly your case. RelativeLayout can not do that.
For those looking for a solution to this, like I did, you can use FrameLayout instead of RelativeLayout.
Then you can set the gravity the intended object to bottom right as below
<TextView
android:layout_gravity="bottom|right"
android:text="FOOBARZ"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
</TextView>
You have set the RelativeLayout to "wrap_content"
and the TextView to android:layout_alignParentBottom="true", so it automatically tries to stretch the RelativeLayout to the bottom. Don't use such dependencies with Relative Layout, as it can count as "circular dependencies".
From the docs for RelativeLayout:
Note that you cannot have a circular dependency between the size of the RelativeLayout and the position of its children. For example, you cannot have a
RelativeLayout whose height is set to WRAP_CONTENT and a child set to ALIGN_PARENT_BOTTOM.
Try to align your TextView to something other than the parent RelativeLayout, but watch out for this problem as well:
Circular dependencies, need some help with exact code
Alternatively, try to add more sophisticated inner layouts.
Dont use alight_Parent type properties with the child views
You can use frame layout instead of RelativeLayout with respective gravity
<FrameLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content">
<TextView
android:layout_gravity="bottom|right"
android:text="Hello "
android:layout_height="wrap_content"
android:layout_width="wrap_content">
</TextView>
</FrameLayout>
FrameLayout is usually good for placing different views one on top of each other (where the most recent child is on top of the previous child). In your case, you'd like to place views one next to each other (above, below, start, end), so I think ConstrainLayout fits better because it's exactly what it does.
Unlike RelativeLayout, you'd be able to set the ConstrainLayout width to wrap_content and still arrange its children views as you wish, for example instead of
android:layout_alignParentTop="true"
you can use
grid:layout_constraintTop_toTopOf="parent"
and instead of
android:layout_alignParentBottom="true"
you can use
grid:layout_constraintBottom_toBottomOf="parent"
Good answers. Now if you don't have layout_alignParentBottom="true" and still getting this issue watch out for android:background="#drawable/bkgnd" where bkgnd is a biggie.
I'm not sure why the clean and obvious way of accomplishing this hasn't been posted yet. This performant solution works for any View MyView with a known height.
Wrap your RelativeLayout with height wrap_content in a FrameLayout:
<!-- width here should constrain RelativeLayout -->
<FrameLayout
android:layout_width="#dimen/my_layout_width"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<MyView
...
android:layout_gravity="bottom" />
</FrameLayout>
Just note that the view at the bottom of the FrameLayout will be on top of your RelativeLayout content, so you'll need to add padding to the bottom of that layout to accomodate it. If you want that view to be variable height, you can either Subclass FrameLayout to add padding in code based on the measured view height, or just change the FrameLayout to vertical LinearLayout if you're not worried about the performance, i.e. it's not a listview item, or the views are relatively lightweight.
Not sure why all the answers here suggest FrameLayout, which is designed to render a single view or views layered in the z axis. OP's problem is a sequence of views stacked vertically, which should be in a LinearLayout.