I am making a video player and previewing the video's thumbnails in gridview. Is there any way to make the thumbnails fill the gridview completely, by perhaps zooming in the image till both sides are >= grid size. Something like CSS background-size: cover, if that makes things clear
Activity Layout:
<RelativeLayout 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"
tools:context=".MainActivity">
<GridView
android:id="#+id/videos_grid"
android:numColumns="2"
android:layout_width="match_parent"
android:layout_height="match_parent">
</GridView>
</RelativeLayout>
Grid Item Layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="384dp"
android:orientation="horizontal"
android:weightSum="1">
<ImageView
android:id="#+id/video_item_thumbnail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="#string/video_thumbnail"
android:background="#drawable/video_item_background"/>
<TextView
android:id="#+id/video_item_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:textSize="20sp"
android:textColor="#android:color/white"
android:padding="5dp" />
</RelativeLayout>
android:scaleType
<ImageView
...
android:scaleType="centerCrop" />
This makes the smaller edge of drawable == ImageView's size while keeping the aspect ratio
Related
I have a grid implementation of the recyclerview using the Autofit grid as detailed here:
http://blog.sqisland.com/2014/12/recyclerview-autofit-grid.html
However, my grid items are not squares (they are rectangles) despite fixing the grid item size. Is there a way to make the items square (as in actual GridView) while maintaining the autofit property
item_grid_image.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:id="#+id/image_wrapper"
android:layout_width="140dp"
android:layout_height="140dp"
android:padding="1dp"
android:layout_centerInParent="true">
<com.makeramen.roundedimageview.RoundedImageView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="#null"
android:scaleType="centerCrop"
tools:src="#drawable/file_directory" />
</FrameLayout>
fragment_recyclerview.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/grid_view_wrapper"
android:layout_marginStart="#dimen/default_margin"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<com.project.AutoFitRecyclerView
android:id="#+id/grid_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/count_text_view"
android:layout_alignParentTop="true"
android:columnWidth="140dp"
android:layout_centerInParent="true"
android:requiresFadingEdge="vertical"
tools:listitem="#layout/item_grid_image">
</com.project.AutoFitRecyclerView>
</RelativeLayout>
So the reason for this is that it is very rare that your RecyclerView would have a width that is divisible by your columnWidth property. That means that your actual column width will almost always be larger than 140dp while the cell height will always be 140dp.
To fix this, you need to make your image match the column width and make the height match the width. One way to accomplish this would be to use a SquareFrameLayout:
<com.project.SquareFrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/image_wrapper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="1dp">
<com.makeramen.roundedimageview.RoundedImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="#null"
android:scaleType="centerCrop"
tools:src="#drawable/file_directory" />
</com.project.SquareFrameLayout>
I am using com.android.volley.toolbox.NetworkImageView.
Image is coming from url.
I want to display image so that its width to occupy full width of screen not height because below image there is a caption which is a Textview.
Here is the activity's xml
<?xml version="1.0" encoding="utf-8"?>
<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"
android:background="#color/black"
tools:context=".MainActivity" >
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
Here is the items xml.
<?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:gravity="center" >
<com.android.volley.toolbox.NetworkImageView
android:id="#+id/photo_image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="1dp"
android:src="#drawable/button_register" />
<TextView
android:id="#+id/caption"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/photo_image"
android:layout_marginLeft="15dp"
android:text="Check"
android:textColor="#color/white" />
</RelativeLayout>
From the backend the image size is 300 X 200 pixels.
How to set imageview so that it can occupy full width of the screen.
Can anyone help?
NetworkImageView extends ImageView so you should be able to use everything that works with ImageView.
So, if you want your image to occupy full width and adjust its height so it maintains its aspect ratio (at least that's what I understood you wanted to do) use the adjustViewBounds property
Your xml will look like this:
<com.android.volley.toolbox.NetworkImageView
android:id="#+id/photo_image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="1dp"
android:src="#drawable/button_register"
<!-- add adjustViewBounds -->
android:adjustViewBounds="true" />
On landscape mode my background image stretches, I would like the image to enlarge rather than stretch to fit the size. From what I've seen I have to add it to it's own layout (E.g. LinearLayout) or 'ImageView` and the have a layout for the content on the view, am I correct in saying this?
My current xml layout looks like this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/instructions"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/photo_background"
android:tag="layout" >
<ScrollView
android:id="#+id/scroll_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:fadingEdge="none" >
<include layout="#layout/instructions_internal" />
</ScrollView>
Which includes the following layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scroll_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:id="#+id/instructionsLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/transparent_black" >
<RelativeLayout
android:id="#+id/more_info"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<WebView
android:id="#+id/top_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp" />
<Button
android:id="#+id/test"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:layout_below="#+id/top_content"
android:layout_marginBottom="10dp"
android:layout_centerHorizontal="true"
android:onClick="onClickHandler" />
<Button
android:id="#+id/instructionsbutton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/test"
android:background="#color/dark_gray"
android:drawableLeft="#drawable/arrow_down_float"
android:gravity="left|center"
android:onClick="onMoreInstructions"
android:paddingBottom="5dp"
android:paddingTop="5dp"
android:text="#string/more_instructions_start"
android:textColor="#color/solid_white" />
</RelativeLayout>
<WebView
android:id="#+id/bottom_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_below="#+id/more_info"
android:layout_marginTop="10dp" />
</RelativeLayout>
Any guidance on this would be gladly appreciated. Thanks
Yes you're correct. View's background scaling type is equivalent to ImageView's ScaleType.FIT_XY It will mess up the aspect ratio unless you're using wrap_content and the contents do not make it stretch past background bounds.
So in this situation I usually use an ImageView I place behind the view I need to give a properly-scaled background to. (Most likely yo're looking for CENTER_CROP scale type)
UPD here's some code
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/instructions"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:tag="layout" >
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/photo_background"
android:scaleType="centerCrop" />
<ScrollView
android:id="#+id/scroll_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fadingEdge="none" >
<include layout="#layout/instructions_internal" />
</ScrollView>
</FrameLayout>
use an image that matches or in accordance with the android device resolution and screen size.
the image cannot itself enlarge itself, even if you use a linear layout dedicatedly for the image, the image is bound to stretch.
keep images of all possible resolutions in separate folders that you plan to run you application on.
what i have is an activity and i add an images to it, and i make it as background for the activity with the following xml :
<LinearLayout 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"
tools:context=".SplashScreen">
<ImageView
android:id="#+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:src="#drawable/splash5" />
</LinearLayout>
and the image size is : 550 px for width and 800 px for height
and as you can see from the image you can see a white space in top and in bottom .. why this is happening even it's fill parent for width and height?
use like this:
<LinearLayout 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"
tools:context=".SplashScreen">
<ImageView
android:id="#+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:src="#drawable/splash5"
android:scaleType="fitXY"
/>
</LinearLayout>
Setting a photo to an ImageView does not work as i expect. It does not fill the width completely.
This is my code:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/linearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/black"
android:orientation="horizontal" >
<com.android.volley.toolbox.NetworkImageView
android:id="#+id/imageCell"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:layout_margin="5dp"
android:src="#drawable/unnamed" />
</LinearLayout>
I tried with android:layout_width="wrap_content" and still no change.
The first image is not shown completelly. The second one is in portraid mode and it's ok.
Thank you.
try setting
android:scaleType="fitXY"
to your imageView