How do I let or force a background drawable to be smaller than the view? Say I have an ImageView which a user clicks to take a photo. I want to place the ic_photo_camera icon as the background of the ImageView. But I don’t want the icon to stretch to fit the size of the ImageView: I want the icon to maintain its own size. How do I do this without using a combination of views? but rather just one view? For instance I can use A RelativeLayout and two ImageView to accomplish this. But I am wondering if there is an option for just one ImageView.
update
I think this is as good as a picture: this does it presently. But I don't want to use three views, I want to use one if I can.
<?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="match_parent"
android:background="#eeeeee"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/container"
android:layout_width="250dp"
android:layout_height="150dp"
android:layout_centerHorizontal="true">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:scaleType="center"
android:src="#drawable/ic_photo_camera_white_48dp" />
<ImageView
android:id="#+id/photo"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:scaleType="centerCrop" />
</RelativeLayout>
<TextView
android:id="#+id/label"
android:layout_width="match_parent"
android:gravity="center"
android:layout_height="wrap_content"
android:layout_below="#+id/container"
android:background="#FFFFFF"
tools:text="This is the label to some image" />
</RelativeLayout>
Yes, you can.
<?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="match_parent"
android:layout_height="match_parent"
android:background="#eeeeee">
<ImageView
android:id="#+id/container"
android:layout_width="250dp"
android:layout_height="150dp"
android:layout_centerInParent="true"
android:scaleType="center"
android:src="#drawable/ic_photo_camera_white_48dp"
android:background="#drawable/bg"/>
<TextView
android:id="#+id/label"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/container"
android:background="#FFFFFF"
android:gravity="center"
tools:text="This is the label to some image" />
</RelativeLayout>
and create bg.xml in your res/drawable:
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:gravity="clip_horizontal"
android:src="#drawable/photo" />
#drawable/photo is what you wanna put into your old ImageView with id "photo". gravity can be changed to clip_vertical based on your image aspectRatio.
If your wanna dynamically set "photo", you can:
ImageView iv_container = (ImageView) findViewById(R.id.container);
Drawable drawable = getResources().getDrawable(R.drawable.photo_2);
((BitmapDrawable)drawable).setGravity(Gravity.CLIP_HORIZONTAL);
iv_container.setBackgroundDrawable(drawable);
hi，could you show a picture which you want to display, i can not hardly understand what you say. i try you can use the scaleType attribute of imageView, it has center, fixXY as so on. I appreciate it could help you.
Related
I need to display an image and text on a single row. The image should resize based on the text height. I know that it's possible programmatically but is it possible to do this also only in XML ?
<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">
<ImageView android:id="#+id/Image" ... />
<TextView
android:id="#+id/Text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#id/Image"
tools:layout_editor_absoluteX="47dp"
tools:layout_editor_absoluteY="37dp" />
</RelativeLayout>
Just wrap the views inside a parent view that adjust to the textview and make the imageview resize according to the parent.
<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">
<!-- LOOK HERE-->
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/Text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#id/Image"
tools:layout_editor_absoluteX="47dp"
tools:layout_editor_absoluteY="37dp" />
<ImageView android:id="#+id/Image"
android:layout_heigth="match_parent"
android:layout_width="wrap_content" />
</LinearLayout>
</RelativeLayout>
I haven't test it, but it should be something really close to this.
EDIT: Using an horizontal LinearLayout should give you a quick view of how is working and the in the linear layout you arrange with the toRightOf, toLeftOf, etc.
i want to create a button with green color background and a white line in center, like in the image.
If you want to use a 9 patch (name it btn_green.9.png - mind the extension!), put it in your /res/drawable-mdpi folder.
You can use this one:
This is how it is shown in the draw9patch tool:
This is how to add it:
<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"
>
<ImageButton
android:layout_width="match_parent"
android:layout_height="96dp"
android:background="#drawable/btn_green"
/>
</RelativeLayout>
It only uses 1 View, so it's a superfast (the less Views, the better performances)!!
You can create an ImageButton with Background attribute, and then create a View for the line setting the margin attribute to move it the position you want.
This is a very fast xml, but you can start playing with it
<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">
<ImageButton
android:layout_width="fill_parent"
android:layout_height="100dp"
android:background="#009900" />
<View
android:layout_width="fill_parent"
android:layout_height="5dp"
android:layout_marginTop="50dp"
android:background="#FFFFFF" /> </RelativeLayout>
If you want to make the button like that, you can use FrameLayout.
<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="wrap_content">
<ImageButton
android:layout_width="fill_parent"
android:layout_height="100dp"
android:background="#009900" />
<View
android:layout_width="fill_parent"
android:layout_height="2dp"
android:layout_gravity="center_vertical"
android:background="#FFFFFF" />
</FrameLayout>
The reason why i'm using FrameLayout is to overlap Views. so try this code, i hope it works.
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.
the imageview takes extra [black] space and i dont know why
ok this imageview should wrap content but instead..
photo explains the problem
this is the code
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageView
android:id="#+id/map"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/map" /><ImageView
android:id="#+id/blxx"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:paddingBottom="-20dp"
android:src="#drawable/photo" />
<ImageView
android:id="#+id/blxx"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#drawable/blxx" />
</LinearLayout>
</ScrollView>
Try the below:
android:adjustViewBounds="true"
This will remove the extra padded space
first possible reason for your problem:
sometimes when the image is too small, it can't scratch anymore then some limit. after that limit - what happens is what you see - blank space claimed by the imageView where additional scratch of the image was expected. I advice you to take larger picture (with bigger resolution)
Second possible reason:
add to your imageView properties on the xml file the following attribute:
android:scaleType="fitXY"
android:layout_gravity="center"
Above line is centering the image to fit inside your ImageView. Try without it. If not, set gravity to "fill" and try again.
Also remove one of the duplicates of blxx as noted.
hope this ll help you
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:layout_gravity="center">
<ImageView
android:id="#+id/map"
android:layout_width="fill_parent"
android:layout_height="fill_content"
android:src="#drawable/map" />
</LinearLayout>
</ScrollView>
I have made layout for custom dialog, it has inside two imageview. I want to show both Imageview when dialog appear. and i want to hide the main layout of my xml file I have used "#00000000" as background:color, but it is not working.
Is there any way to do the same?
Thanks.
Here is my layout. I have taken screen shot please have a look i want to hide the border which are showing in image.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent" android:layout_width="fill_parent"
android:orientation="vertical" android:background="#00000000">
<LinearLayout android:id="#+id/linearLayout1"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
<ImageView android:id="#+id/img_closeimage" android:src="#drawable/product_zoom_close"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:clickable="true"></ImageView>
</LinearLayout>
<LinearLayout android:id="#+id/linearLayout2"
android:layout_marginLeft="25dip" android:layout_height="wrap_content" android:layout_width="wrap_content" android:layout_marginTop="-5dip" android:layout_marginBottom="20dip" android:layout_marginRight="20dip">
<ImageView android:id="#+id/img_ProductZoom" android:src="#drawable/index"
android:layout_width="wrap_content" android:layout_height="wrap_content"
></ImageView>
</LinearLayout>
</LinearLayout>
image description here
Adinias comment is correct, your layout has quite some redundancy. You also say that you only want to show an imageview, but your layout contains two imageviews. If you only want to show one imageview, then your layout should look like this:
<?xml version="1.0" encoding="utf-8"?>
<ImageView android:id="#+id/img_ProductZoom" android:src="#drawable/index"
android:layout_width="wrap_content" android:layout_height="wrap_content"
/>
If you want to show two ImageViews, use this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent" android:layout_width="fill_parent"
android:orientation="vertical" android:background="#00000000">
<ImageView android:id="#+id/img_closeimage" android:src="#drawable/product_zoom_close"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:clickable="true"/>
<ImageView android:id="#+id/img_ProductZoom" android:src="#drawable/index"
android:layout_width="wrap_content" android:layout_height="wrap_content"
/>
</LinearLayout>
Your current layout looks the way it does because you have specified the layout to take as much space as possible with android:layout_height="fill_parent" and android:layout_width="fill_parent". Try to use wrap_content as height and width instead.