Develop Reference

Sticking image to bottom of view?

I have designed a splash screen in Adobe XD as shown:
enter image description here
Now when I exported the parts of the image to android studio, I was unable to make all the images stick to the bottom as in XD. enter image description here
Can someone tell me how I would go about doing that and would be the best ViewGroup for such task?
Here is my XML file:
<?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:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/gradient"
tools:context=".MainActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/group_1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0" />
</LinearLayout>

It can be done with either ViewGroup. But the problem is not the the view group - the problem is that you have a single image for the whole content - it is bad practice.
There should be at least 2 images - one for the background and the other is for the content.
It is due to fragmentation issue regarding device screens - there too many different resolution, aspect ratios and dpis to make the single image work properly on them all.
I will show you an example based on your UI with a background and logo image with small images below logo. You just need to separate it into two files - background could be jpg but logo must be png with transparency. In case you will do it - here is how your layout should look like.
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
android:orientation="vertical">
<ImageView
android:id="#+id/background"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="#drawable/bg" />
<ImageView
android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:padding="24dp"
android:src="#drawable/logo" />
</FrameLayout>
You may want to experiment with android:padding and android:scaleType to achieve the best result.
Edit
Changed android:layout_height="match_parent" to android:layout_height="wrap_content" - it will work better this way
Hope it helps.

Android Imagebutton is clipped

I'm having issues with my Activity and an ImageButton inside it. It looks like it is clipping:
This is the XML of the corresponding activity:
<?xml version="1.0" encoding="utf-8"?>
<!-- A RecyclerView with some commonly used attributes -->
<LinearLayout xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:id="#+id/todo_linear_layout"
android:layout_height="match_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:focusable="true"
android:focusableInTouchMode="true"
android:orientation="horizontal">
<ImageButton
android:id="#+id/imageButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:adjustViewBounds="true"
app:srcCompat="#android:drawable/ic_input_add" />
<EditText
android:id="#+id/edittodo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20px"
android:layout_weight="5"
android:textColor="#android:color/black" />
</LinearLayout>
<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/todo_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical" >
</android.support.v7.widget.RecyclerView>
</LinearLayout>
Additionally the Layout Designer in Android Studio shows the Layout correctly:
Where is the problem here? I already tried to change margin or padding values but the Button is still clipping in the running app on my android device.

I believe that what's happening is that the device you're running your app on doesn't have the #android:drawable/ic_input_add drawable.
I tried running the code you posted, and everything worked for me. However, if I delete the app:srcCompat attribute from the <ImageButton> tag, then I get the same behavior you posted in your first screenshot.
In general, you can't rely on 100% of devices having #android: resources. Some manufacturers remove resources, and others replace the values with nonsense (I've seen #android:color/white come through as gray, for example).
I recommend creating your own drawable (maybe even just manually copying the one from Android and adding it to your project), and referencing that instead.
app:srcCompat="#drawable/your_own_add"

Changing the app:srcCompat to:
android:src="#android:drawable/ic_input_add" did it! So the issue was, that the device didn't find that icon and displayed just something gray.

Aligning a image button with a background android

I am pretty new to android programming and i was hoping you could help me out with something. I have set a background in an xml file and i am trying to align a image button to a specific area of my background. I have tried using density pixels however it is not precise enough and the button now covers an area of the background i would like to be visible. Any ideas on how i could fix this?
Many thanks,
Alex
My code is as follows:
<?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:orientation="vertical"
android:background="#drawable/home_background">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_marginTop="93dp" >
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="341dp" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<ImageButton
android:id="#+id/imageButton1"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginLeft="30dp"
android:layout_marginTop="30dp"
android:background="#null"
android:scaleType="fitXY"
android:src="#drawable/workbench" />
</LinearLayout>
</ScrollView>
</LinearLayout>
</LinearLayout>

You can always try using px instead of dp, however the whole point of dp is that they will scale automatically for any screen. If you use px I suspect that it will only work well on the current screen resolution that you're testing on. You would have to define px values for numerous screen resolutions/densities to ensure that your app displayed correctly across different devices.

Android screen rendered really wrong

I'm using a GLSurfaceView to render a live wallpaper behind my apps interface which consists of android UI elements.
In the beginning of my app I ask the user if they would like to see this wallpaper or not.
ONLY if the user accepts the GLSurfaceView is inflated in the existing xml as a first element so it will stay behind.
My problem is exactly the opposite of what i would think it would.
When the wallpaper is ACTIVATED the screen renders properly, like so:
When I don't use the wallpaper it's rendered like a, partially burned graphic card:
As you see from the xml structure, my GLSurfaceView is not even injected in the problematic case.
Something weird is that when it's injected the DDMS Monitor displays it as just
If the opposite was the case it would be clear that the problem is caused by the GLSurfaceView. But now it seems as if the lack of it causes this problem.
Any ideas on what could be the problem?
I'm using Nexus 4 to test and it seems that it could be related based on DanJAB
XML layout:
<?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">
<Button
style="?metaButtonBarButtonStyle"
android:id="#+id/home_history"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="#+id/button_calibrator"
android:text="#string/history"/>
<View
android:id="#+id/button_calibrator"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/home_history"
android:layout_alignBottom="#+id/home_history"
android:layout_centerHorizontal="true"/>
<Button
style="?metaButtonBarButtonStyle"
android:id="#+id/home_help"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_toRightOf="#+id/button_calibrator"
android:text="#string/help"/>
<View
android:id="#+id/screen_menu_seperator"
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_below="#+id/home_history"
android:background="#color/holo_blue"/>
<ListView
android:id="#+id/homescreen_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/screen_menu_seperator"
android:background="#android:color/transparent"
android:cacheColorHint="#android:color/transparent"/>
<View
android:layout_width="match_parent"
android:layout_height="2dp"
android:layout_alignParentBottom="true"
android:background="#color/holo_blue"/>
</RelativeLayout>
GLSurfaceView XML:
<?xml version="1.0" encoding="utf-8"?>
<android.opengl.GLSurfaceView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/background"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:visibility="gone"/>
and in java:
getLayoutInflater().inflate(R.layout.background, contents);
GLSurfaceView background = (GLSurfaceView) contents.findViewById(R.id.background);

This is a phone bug. Nexus 4 causes this issue with certain theme configurations.

Android ICS 1x1 widget text label

I am trying to make a 1x1 widget for ICS, which displays the text label beneath the icon, and uses the device default text style, but am unable to find out how this is done. I know it is possible, as many 1x1 widgets that come stock with the my Galaxy Nexus have this functionality. I don't want to hard-code a textView in the layout file, as doing this will make it look bad on other devices, which may use different fonts and text sizes, etc.
Anybody have any idea?

I don't think you can get around putting a TextView into the layout. What you can do is choose style for it from one of the built-in android styles. That way it should match all of the other icon/widget labels. Hopefully this will work in other API versions as well but I know that it looks right on my ICS phone. I'm also not sure if the FrameLayout is the best thing to use here but I thought I would do a bit of experimenting. The important part is the TextView at the end.
<?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:orientation="vertical" >
<FrameLayout
android:id="#+id/FrameLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1" >
<ImageButton
android:id="#+id/buttonimg"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/appwidget_dark_bg_clickable"
android:clickable="true"
android:contentDescription="#string/app_name" />
<ImageView
android:id="#+id/imageView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="#string/app_name"
android:src="#drawable/arrow_dark" />
</FrameLayout>
<TextView
android:id="#+id/labelTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textAppearance="#android:style/TextAppearance.DeviceDefault.Widget"
android:text="#string/widgetlabeldefault" />
</LinearLayout>