I found a documentation from OneSignal saying that the icons must be white even, from API 21.
I was using Android Asset Studio previously. Images are being generated in white.
your "icon" have a rounded background, so it is also converted to white pixels... your notification icon should contain only image-shape, e.g. logo of app without background - put this image into Assest Studio and you will get proper icon (every non-transparent pixel will be converted to white)
for example: Facebook icon is small "f" letter on blue rounded-corner background - put only "f" icon on transparent background to get proper white icon in Asset Studio (well, in this case it is already white...)
As i know, if your app supports Android 2.3 to 2.3.7 (API level 9 to 10), Image Asset Studio generates a gray version of your icon. Later Android versions use the white icon that Image Asset Studio generates.
The way to generate the correct notification icon:
Use the ANDROID ASSET STUDIO. https://jgilfelt.github.io/AndroidAssetStudio/icons-launcher.html#foreground.type=image&foreground.space.trim=1&foreground.space.pad=-0.05&foreColor=e8eaf6%2C27&crop=1&backgroundShape=none&backColor=e8eaf6%2C100&effects=none&elevate=0
Download the icon which you want from the website. You could search icon in goole. It would show a lot of websites whicn could download.
I have an app on android that create home shortcut icon.
The image of the icon is image that i set programmatically from the drawable
Now the problem is, when the shortcut was created on the home screen it's created with white background.
How do i remove that white backgroubd and set image to full size of icon?
Thank you all..
EDIT: the app i was talking about is app that i developed using android studio and just want to set full size of image when i create home shortcut
This is highly dependent on the launcher you use. The image looks like the standard google android 8+ (?) icon shape.
I theory it could be part of the icon you created but since you are asking this I doubt it.
In older versions of android the outer shape of the icons were individual, while rather cool and the outline correctly shown while dragging them etc many complained about the lack of a uniform look of all the icons in the app drawer etc.
It was introduced to make all icons seem more uniform.
Long pressing an empty space in the Google Pixel launcher for example shows a choice to go into the settings for the launcher and there you can change the shape all icons should have:
In addition to this, apps can take advantage of the various shapes and adapt to them and fill them out so to speak. See for example the Chrome icon while changing the icon shapes in the launcher settings.
Introduced in android 8: The feature is called adaptive icons.
See the docs about adaptive icons here:
https://developer.android.com/guide/practices/ui_guidelines/icon_design_adaptive
That is because of adaptive icons - a feature of Android 8 and can't or shouldn't be changed. You can at best change the colour of the background.
i removed the white background from the launcher icon by following these guidelines https://developer.android.com/studio/write/image-asset-studio
a few more points
in the background layer, move the slider to resize the icon until you see no what would have been the white background.
in the manifest file, change the icons to reference the mipmap folder;
android:icon="#mipmap/yourlogo"
android:roundIcon="#mipmap/yourlogo"
You might be thinking this question is a duplicate of this one. But since then, Android Studio has been updated and the solution given there is not working anymore.
I am trying to set my app logo using image asset in android studio. This is because if I put my app logo directly in drawable or mipmap, then it causes many problems like: If it's size is big then app crash occurs, if device running on oreo then logo will not showed and default ic_launcher is showing etc.
While trying to set my app's logo using image asset, I am facing a problem:
I can't keep app logo's background transparent.
I have a png logo made in photoshop and I want to set this as my app logo and I don't want any background but android studio image asset doesn't provide any option to remove background. I tried following solutions from google:
this and this
but none of these worked for me.
Tried solutions:
By setting shape to none
by Deleting ic_launcher_background file from it's default location
Tried in different devices
None of these works...please help me. Any help will be appreciated.
Android 8.0 Oreo (API level 26) introduced adaptive launcher icons, which consist of two layers: a foreground and a background. The material design guidelines state that the background layer must be opaque in Android O and beyond, as you can see at the bottom of the following citation. So, the adaptive launcher icon for Android 8.0 or higher must have opaque background color at least, if targetSdkVersion of your app is 26 or higher.
https://material.io/guidelines/style/icons.html#icons-icons-for-android
Icons for Android
Android O and beyond
Android O icons represent your app on a device's Home and All Apps screens. The following guidelines describe how icons can receive unique visual treatments, animations, and behaviors.
...
Layer specs
Icons consist of two layers: a foreground and a background. Each layer can animate and receive treatments independently from the other layer.
Foreground (scrolling parallax)
108 x 108 dp
72dp masked section
Transparency recommended (optional)
Background (subtler parallax)
108 X 108 dp
72dp masked section
Must be opaque
Workaround for 7.1 or lower
Although launcher icons for 8.0 or higher must have opaque background color, the other legacy launcher icons for 7.1 or lower can revert to transparent background color, if you can omit round launcher icons from your app.
First, create Launcher Icons (Adaptive and Legacy). It will create adaptive launcher icons and legacy launcher icons. All of them have opaque background color, at first.
After that, create Launcher Icons (Legacy only). This will overwrite only the existing legacy launcher icons, as you can see in the second screenshot below. If you set the shape to none, they will have transparent background color.
Delete folder res/mipmap/ic_laucher_round in the project window.
Open AndroidManifest.xml and remove attribute android:roundIcon="#mipmap/ic_launcher_round" from the application element.
In the left-side pane above, the following XML files define adaptive launcher icons for Android 8.0 or higher.
mipmap-anydpi-v26/ic_launcher.xml
mipmap-anydpi-v26/ic_launcher_round.xml
As seen in the right-side pane, they refer to the following drawable XML files.
drawable/ic_launcher_background.xml
drawable-v24/ic_launcher_foreground.xml
Update #1:
In Android 8.0 or higher, the background color of launcher icons can be transparent, as shown in the Android 8.1 (Nexus 5X) screenshots. The sample app "NoAdaptive" is without any resource for the adaptive launcher icons in folder mipmap-anydpi-v26, and the other app "Adaptive" has the resource.
Update #2:
Although the background color of launcher icon can be transparent in Android 8.0 or higher, it depends on user’s launcher app. Some launcher apps will convert your legacy icon to opaque adaptive icon.
In Nexus 5X device (Android 8.1)
The default launcher app is Google Now Launcher, according to its package name com.google.android.launcher. The background color can be transparent, as in the screenshots of Update #1.
In Nexus 5 emulator (Android 8.1)
The default launcher app is Pixel Launcher, according to its package name com.google.android.apps.nexuslauncher. The background color can be transparent in Recents screen, as in the screenshots below:
opaque in Home screen
transparent in Recents screen
opaque in All Apps screen
Opaque white background in some launcher apps
These GMS apps are closed-source:
com.google.android.launcher Google Now Launcher
com.google.android.apps.nexuslauncher Pixel Launcher
In contrast, AOSP apps are open-source. Most launcher apps in Android are based on the source code of the following launcher apps:
com.android.launcher
Launcher (discontinued)
Launcher2 (legacy)
com.android.launcher2
Launcher2 (original package name)
com.android.launcher3
Launcher3 (for Android 5.0 Lollipop or higher)
Launcher3 source code
In the git branch oreo-release of Launcher3, LauncherIcons.java has the method wrapToAdaptiveIconDrawable that wraps legacy launcher icon in adaptive launcher icon.
/**
* If the platform is running O but the app is not providing AdaptiveIconDrawable, then
* shrink the legacy icon and set it as foreground. Use color drawable as background to
* create AdaptiveIconDrawable.
*/
static Drawable wrapToAdaptiveIconDrawable(Context context, Drawable drawable, float scale) {
if (!(FeatureFlags.LEGACY_ICON_TREATMENT && Utilities.isAtLeastO())) {
return drawable;
}
try {
if (!(drawable instanceof AdaptiveIconDrawable)) {
AdaptiveIconDrawable iconWrapper = (AdaptiveIconDrawable)
context.getDrawable(R.drawable.adaptive_icon_drawable_wrapper).mutate();
FixedScaleDrawable fsd = ((FixedScaleDrawable) iconWrapper.getForeground());
fsd.setDrawable(drawable);
fsd.setScale(scale);
return (Drawable) iconWrapper;
}
} catch (Exception e) {
return drawable;
}
return drawable;
}
The flag FeatureFlags.LEGACY_ICON_TREATMENT is defined in FeatureFlags.java:
// When enabled, icons not supporting {#link AdaptiveIconDrawable} will be wrapped in this class.
public static final boolean LEGACY_ICON_TREATMENT = true;
So, the background color of legacy launcher icon depends on this flag, and it can be opaque in some launcher apps such as Pixel Launcher.
The background color
If the flag is set to true, a new adaptive launcher icon is created with R.drawable.adaptive_icon_drawable_wrapper, and the existing legacy icon becomes its foreground layer. The background layer is a drawable: #color/legacy_icon_background, according to the resource XML file:
<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
<background android:drawable="#color/legacy_icon_background"/>
<foreground>
<com.android.launcher3.graphics.FixedScaleDrawable />
</foreground>
</adaptive-icon>
The color legacy_icon_background is defined in colors.xml
<color name="legacy_icon_background">#FFFFFF</color>
So, the background color becomes white.
In Android 5.0 an icon always got an opaque background until I created a transparent file.
File > New > Image Asset.
Turn to Launcher Icons (Adaptive and Legacy) in Icon Type.
Choose Image in Asset Type and select your picture inside Path field (Foreground Layer tab).
Create or download below a PNG file with transparent background of 512x512 px size (this is a size of ic_launcher-web.png).
In Background Layer tab select Image in Asset Type and load the transparent background from step 4.
In Legacy tab select Yes for all Generate, None for Shape.
In Foreground Layer and Background Layer tabs you can change trim size.
Though you will see a black background behind the image in Preview window, after pressing Next, Finish and compiling an application you will see a transparent background in Android 5, Android 8.
Here is the transparent image:
Try this way that worked for me:
First, create a launcher icon (Adaptive and Legacy) from Image Asset:
Select an image for background layer and resize it to 0% or 1% and
In legacy tab set shape to none.
Delete folder res/mipmap/ic_laucher_round in the project window and Open AndroidManifest.xml and remove attribute android:roundIcon="#mipmap/ic_launcher_round" from the application element.
Delete ic_launcher.xml from mipmap-anydpi-v26.
Note: Some devices like Nexus 5X (Android 8.1) adding a white background automatically and can't do anything.
If i didn't get you wrong you have a png file with 512x512 px from a Photoshop file and you want to make logo from it for all necessary folders (mipmap-xxxhdpi to mipmap-mdpi).
You can also use this after creating icon using Android Studio too. I prefer creating my icons using Photoshop.
I use this site after creating a 512x512px icon using Photoshop. You can have icons not only for Android also for iPhone apps and and more and it's free. Icons are scaled correctly, named, and placed inside mipmap folders under android folder of the zip file. You just unzip the file after downloading and copy and paste.I made 50 icons at least and never had a problem.
The number pickers in Android contain a shadow above the previous and next value(s). Is there a attribute to make this shadow transparent?
If an image is being used as the background, these shadows are distracting.
Edit:
Running emulator with Android version 6.0.
Setting the solidColor attribute makes the shadows appear in different colors. Unfortunately, setting it to transparent still keeps the black fading appearance.
How this renders during emulation with the background image:
I think it's just the Android version is too old. I didn't do any customization to numberpicker and it still looks flat (no ugly shadow like that). My test device running 6.0
Android 7.1 now supports Round Icon Resources.
Are there any "hard" specifications/requirements for the rounded icon?
So far, I have only seen round icons with a white background, is that mandatory?
It would be great to have some information on the padding of the circle, for example.