Develop Reference

Android 12 Splash Screen Icon Not Displaying

I am seeing a weird issue with a new app that I am starting. I am utilizing the new Android 12 splash screen API to create my splash screen and I followed the guide provided by Google to do so. I included core-splashscreen in my project to provide compatibility with older versions of Android OS. When I run the app, I see the splash screen as expected on older OS versions like API 30, but when I run it on API 31, the splash screen icon that I provide is not displayed. The background color that I specify is displayed, but the icon is not there at all. I have tried this with a drawable asset as well as a mipmap and nothing is working. I am stumped as every tutorial I find shows the same steps I have followed and screenshots of their working splash screens, but I am not having any luck.
For context here is my splash screen style definition for v31:
<style name="Theme.Splash" parent="Theme.SplashScreen">
<item name="android:windowSplashScreenBackground">#color/orange_7A</item>
<item name="android:windowSplashScreenAnimatedIcon">#drawable/splash_foreground</item>
<item name="postSplashScreenTheme">#style/Theme.App</item>
</style>
I have an identical style for all other OS versions except I'm using "windowSplashScreenAnimatedIcon" instead of "android:windowSplashScreenAnimatedIcon". I have tried v31 with and without the "android:" in front of the item names and neither work. Here is my MainActivity.kt:
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
installSplashScreen()
setContent {
MyVeevaTheme {
Login()
}
}
}
I am also setting the "android:theme" property to my splash style in my AndroidManifest.xml. I know the splash style is being applied because it honors the background color, but it is not showing the icon for some reason even though the icon shows fine for older OS versions. Thanks in advance for any help you can give.

TL;DR kill the app and run from the launcher, icon does not show up when run from Android Studio.
Adding my comment here as an answer for better visibility.
I did figure out how to get it to show. I was following this tutorial to set up a base project to recreate the issue and I noticed the note the author put right near the bottom that mentions that just running the app doesn't show the full splash screen. You have to kill it and open the app from the launcher. Once I did that, I was able to see my splash screen. Annoying, but at least I have a way to test it now. I did go ahead and log a bug report for this as well, but I have a work around for now. Thanks for everyone's answers/comments!

folks as per the document installSplashScreen() should have been called prior to super.onCreate()

When you use the AndroidX SplashScreen Library, like you are doing (Theme.SplashScreen) you need to use the windowSplashScreen* attributes without the android: prefix.
The android: prefix is used to call the platform attributes, but in this case you are using the library and not the platform, so no need for the prefix:
res/values/themes.xml:
<style name="Theme.Splash" parent="Theme.SplashScreen">
<item name="windowSplashScreenBackground">#color/orange_7A</item>
<item name="windowSplashScreenAnimatedIcon">#drawable/splash_foreground</item>
<item name="postSplashScreenTheme">#style/Theme.App</item>
</style>

For some reason when the app is launched through android studio it doesn't show the icon. Kill the app and launch app from the menu. Then the icon will appear.
This is true if you are not using Splash API: https://developer.android.com/develop/ui/views/launch/splash-screen/migrate

Icons are also not shown when navigating from the deeplink.
And It looks like its more then only not showing the icon. It also stops calling code for setOnExitAnimation lambda.
installSplashScreen().apply {
setOnAnimationListener { viewProvider ->
viewProvider.iconView
.animate()
.setDuration(500L)
.alpha(0f)
.withEndAnimation {
viewProvider.remove()
someActionCall()
}
.start()
}
If you relied upon this code to be always called it is not.
See mention in issue tracker: https://issuetracker.google.com/issues/207095799

The following instructions helped me, you may try this one. A few things need to keep in mind while working with the new splash screen API.
Keep updated on the latest library version. Follow this link (https://developer.android.com/jetpack/androidx/releases/core).
Put installSplashScreen() before setContentView()
Make a proper theme for the splash screen. You may try the following one.
Put this into your styles.xml or themes.xml folder and use it with your activity as the theme.
<!-- Splash Screen Theme. -->
<style name="Theme.AppSplash" parent="Theme.SplashScreen">
<item name="windowSplashScreenBackground">#color/white</item>
<item name="windowSplashScreenAnimatedIcon">#mipmap/ic_launcher_round</item>
<item name="windowSplashScreenAnimationDuration">1000</item>
<item name="postSplashScreenTheme">#style/AppTheme</item>
</style>

Make sure you set the theme to the MainActivity as well. For me that was the cause for the splash screen to now show. So you have to set the theme in both the application and the MainActivity

In addition to the other explanations above, I had the same issue but I realized that in my Manifest file I was setting the Splashscreen theme on my MainActivity which is correct, but my MainActivity was not having the main/launcher intent-filter which tells the android OS that this is the starting activity.
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
So in your manifest, check that you are actually setting the Splashscreen theme on the Starting activity that is having the main/launcher intent-filter, and leave the Application tag to have your application theme and not the Splashscreen theme, to avoid having your app misbehave on other activities due to the theme because I experienced that too (This is especially for those migrating to the new splash screen).
Thank you, I hope someone finds this helpful

I had the same problem on my phone running Android 12. None of the above suggestions worked, (moving installSpashScreen() above super.onCreate etc...)
What fixed it for me was adding the android:theme attribute in the manifest to the Launching <activity> Tag, Not the <application> Tag, which is contrary to the documentation :
In the manifest, replace the theme of the starting activity to the theme you created in the previous step.
<manifest>
<application android:theme="#style/Theme.App.Starting">
<!-- or -->
<activity android:theme="#style/Theme.App.Starting">
Note, you still have to kill the activity and launch it from the launcher for this to work :(

In my case, the problem with the lack of a splash screen was the installation of the default activity theme:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<application
android:name=".App"
android:theme="#style/Theme.Tracker.StartSplashScreen"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:allowBackup="true"
android:dataExtractionRules="#xml/data_extraction_rules"
android:fullBackupContent="#xml/backup_rules"
tools:targetApi="tiramisu">
<activity
android:name=".MainActivity"
android:exported="true"
android:theme="#style/Theme.Tracker"> <-------
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
When I deleted android:theme="#style/Theme.Tracker" line, it started working.

How to set default edittext color in android 4.x

For setting default theme, I set that in application tag in the manifest file.
<application
android:name=".App"
android:icon="#drawable/icon"
android:label="#string/app_name"
android:theme="#style/AppTheme">
And this is the 'AppTheme' in styles.xml.
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
<item name="android:textColor">#0400ff</item>
<item name="android:editTextColor">#ff0000</item>
</style>
This works in Android 5.0 and 6.0 devices.
But in Android 4.x, oddly it works only for 'textColor' not 'editTextColor'. Although I set this theme, default editText color is white in android 4.x.
I don't know why this problem happened.
Please give me some hints!

I answer this by myself. I found a similar question.
Android set edit text style globally in theme doesn't work
It told that I should use like this
<item name="editTextColor">#ff0000</item>
instead of
<item name="android:editTextColor">#ff0000</item>.
I used it because Android Studio auto complete function recommended it.
And now I know that I have to use these BOTH!
Android 5.0 and 6.0 follow the color name="android:editTextColor", but Android 4.X follow the color name="editTextColor".
The problem has solved!

try the following :
Java
Et.setTextColor()
XML
textColor="#color/yourColor"

Removing Title Bar on Android

I've been having a very hard time trying to get rid of the Title Bar on the application I'm developing. I'm using Android Studio.
I've tried almost all the methods that have been listed on various places on the net..
super.onCreate()...
this.requestWindowFeature(Window.FEATURE_NO_TITLE); // also used it without the "this"
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
this.setContentView(R.layout.your_layout_name_here);
in the .java file
also tried a couple of other methods in the .java file
I've tried changing the codes in the manifest file as well using
<activity android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#android:style/Theme.NoTitleBar.Fullscreen">
even by changing the theme under the Application tag..
I've tried changing the style tag in the styles.xml to something like
<style name="AppTheme">
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
but all of these have failed. The app has CRASHED in all of the above instances. Any help will be deeply appreciated.

try this before your setContentView(..)
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
if (Build.VERSION.SDK_INT > 20)
window.setStatusBarColor(getResources().getColor(R.color.color_white));
or if your ok with it. #android:style/Theme.Holo.NoActionBar though i prefer not using this.
or if youre using appCompat libs
1.Go to your manifest.xml file.
2.Find the activity tag for which you want to hide your ActionBar and then add,
android:theme="#style/Theme.AppCompat.NoActionBar"
<activity android:name=".MainActivity" android:theme="#style/Theme.AppCompat.NoActionBar">

I think you are extending either actionbaractivity or appcompatactivity .Instead of them simply extend Activity and then use
requestWindowFeature(Window.FEATURE_NO_TITLE);

Missing styles. Is the correct theme chosen for this layout?

Missing styles. Is the correct theme chosen for this layout? Use the Theme combo box above the layout to choose a different layout, or fix the theme style references. Failed to find style mapViewStyle in current theme.
I tried every solutions available to solve this problem but nothing seems to work. I have included library in the manifest file. I even created style is styles.xml, I have chosen Google Apis build target as well.
Can somebody please give me a solution?
here is my xml file:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
style="#style/AppTheme"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<com.google.android.maps.MapView
android:id="#+id/themap"
style="#style/mapViewStyle"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey="here i have my key"
android:clickable="true"
android:enabled="true" />
</RelativeLayout>
Here is my manifest snippet:
<uses-library android:name="com.google.android.maps" />
<activity
android:name=".MainActivity"
android:label="#string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Second" />
<activity android:name=".Third" android:theme="#android:style/Theme.Black"/>
</application>
here is my style.xml file
<resources>
<style name="mapViewStyle" parent="#android:style/Theme.Black">
</style>
</resources>

For Android Studio (or IntelliJ IDEA),
If everything looks OK in your project and you're still receiving the error in your layouts, try to 'Invalidate caches & restart'.
Enjoy a coffee while Android Studio is recreating caches & indexes.

I had the same problem and found it was the Theme dropdown at the top of the graphical layout editor. I changed from Holo to Theme and the layout displayed and error disappeared.

What I usually do is the following: a Gradle Clean, Rebuild and Sync all my Gradle files. After that I restart Android Studio, and I go to:
Select Theme -> Project Themes -> AppTheme

This is because you select not a theme of your project. Try to do next:

If we are creating too many projects using Android Studio sometime Rendering issue comes. Even creating a blank activity we receive such rendering error.
Please shut down and restart Android studio. In case the issue persists you can
Hope this helps. It works similar fashion as rule of thumb, in case all looks good and still error persists a restart of application usually resolves the issue.

In my case the problem occurred while the default setting for Android Version in the Designer was set to 'Preview N'. Changed Android Version to '23' and the error notification went away.
Edit And don't forget to uncheck 'Automatically Pick Best'.

I had the same problem using Android Studio 1.5.1.
This was solved by using the Android SDK Manager and updating Android Support Library, as well as Local Maven repository for Support Libraries.
After updating the SDK and restarting Android Studio, the problem was rectified.
Hope this helps anyone who has the same problem after trying other suggestions.

I solved it by changing "classpath" in "dependencies" in build.gradles.
Just change:
dependencies {
classpath 'com.android.tools.build:gradle:2.3.0-alpha2'
or something like that to:
dependencies {
classpath 'com.android.tools.build:gradle:2.2.3'

I got this error after overriding action bar style like this. Also i lost action bar in preview.
<style name="general_app_theme" parent="#style/Theme.AppCompat">
<!-- for API level 11 -->
<item name="android:actionBarStyle">#style/action_bar_style</item>
<!-- Support library compatibility -->
<item name="actionBarStyle">#style/action_bar_style</item>
</style>
<style name="action_bar_style" parent="#style/Widget.AppCompat.ActionBar">
<!-- for API level 11 -->
<item name="android:height">#dimen/action_bar_height</item>
<item name="android:background">#color/action_bar_color</item>
<item name="android:displayOptions">showTitle</item>
<!-- Support library compatibility -->
<item name="displayOptions">showTitle</item>
</style>
So, problem is overriding theme by my custom. this is the reason, why I've changed AppCompat (from "Project Themes") to general_app_theme (from "Manifest Themes"). Now I have no this error and action bar in preview come back.

Try switching the theme in the design view to one of the options in "Manifest Themes". I'm guessing this is Because you are inheriting the theme from the manifest to support multiple api levels. It worked for me anyway.

With reference to the answer provided by #Benno:
Instead of changing to a specific theme, you can simply choose 'DeviceDefault' from the theme menu. This should choose the theme most compatible with the emulated device.

If you still have the problem after trying all the solutions above， please try modify the API Level as shown below. Incorrect API Level may also cause the problem.

It can be fixed by changing your theme in styles.xml from
Theme.AppCompat.Light.DarkActionBar to Base.Theme.AppCompat.Light.DarkActionBar
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
</style>
to
<style name="AppTheme" parent="Base.Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">#color/colorPrimary</item>
<item name="colorPrimaryDark">#color/colorPrimaryDark</item>
<item name="colorAccent">#color/colorAccent</item>
</style>
and clean the project. It will surely help.

Most of the errors in XML happen due to the names you have given to the resources.
Images stored in the drawable folder need to be named in a proper manner.
just check these things:
Are there any duplicate files? if so remove the duplicates. (For example "image.jpg" and "image.png" are not allowed in the same time. It will not show any errors but sometimes it will show that R.java cannot be resolved)
Do the filenames contains any uppercase letters? If so right click on that file->refactor->rename
and rename it with all lowercase, no hyphens, and only a-z and 0-9 are allowed.
Just make sure of the above cases.

I got the same problem with my customized theme that used Holo.Light as its parent. In grayed text Android Studio indicated that some attributes were missing. When I added these missing attributes as follows, the rendering problems went away -
<item name="android:textEditSuggestionItemLayout"></item>
<item name="android:textEditSuggestionContainerLayout"></item>
<item name="android:textEditSuggestionHighlightStyle"></item>
Even though they introduced errors in my style's theme, they caused no problems in rendering the activity designs or building my app.

You can simply remove this error through change "App theme" and select any theme such as light. This error will be removed.

I meet the same problem.Select theme to another one in preview can solve problem temporary.Like the image
Finally,I found out that there are AppTheme and AppBaseTheme in my styles.xml.
And AppTheme has parent AppBaseTheme.
The AppBaseTheme has parent of one system style.
And every layout file use the theme AppTheme.
Just change AppTheme's parent to AppBaseTheme's parent.
It solve the problem permanent.

Just need click button 'AppTheme', and choose 'Manifest Themes'. It works in most cases.

For me, it was occurring on menu.xml file as i was using android:Theme.Light as my theme, So what i did was -
Added new Folder in res directory named values-v21.
Added android:Theme.Material.Light as AppTheme in styles.xml.

This is very late but i like to share my experience this same issue.
i face the same issue in Android studio i tried to some other solution that i found in internet but nothing works for me unless i REBUILD THE PROJECT and it solve my issue.
Hope this will works for you too.
Happy coding.

Change your App theme to AppCombat..

Activity should be transparent, but has black background

My use case is writing an overlay controller activity for a landscape camera preview. I followed the instructions from a couple of tutorials for writing a transparent theme.
So my res/values/style.xml looks like this:
<resources>
<style name="Theme" parent="android:Theme" />
<style name="Theme.Transparent">
<item name="android:windowBackground">#drawable/transparent_background</item>
</style>
<drawable name="transparent_background">#00000000</drawable>
</resources>
The activity snippet:
<activity android:name=".CameraPreview"
android:label="Camera"
android:screenOrientation="landscape"
android:theme="#android:style/Theme.NoTitleBar.Fullscreen">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Controlls"
android:label="Controlls"
android:screenOrientation="portrait"
android:theme="#android:style/Theme.Translucent">
</activity>
When I start this activity from my root activity, the layout gets drawn correctly, but the background stays black. I tried to use #android:style/Theme.Translucent instead, but this Theme inherits the orientation from the calling activity (landscape) and thats not what I want.
Edit:
The application holding the camera preview is set to landscape view as it does not display the preview correctly in portrait orientation. (see old google bug report)
What I wanted to do was to put an independent activity for user interaction interface in front of the camera surface holder (this activity should be set to 'portrait', or even better to 'sensor')

Here's a somewhat related answer for anyone else that has a similar problem.
tl;dr
Adding a new style where the name is a suffix of an existing style can cause problems (like making transparent activities have a black screen).
Problem:
Our transparent activity background was black after doing a large refactor. (The activity was already using a transparent theme.)
After several hours of going through commits I found what seemed to be the cause of the problem. In our app we use styles like CSS. There was an existing style like this that we applied to a TextView.
<style name="HeadLine.SM.White.MyFontBold">
<item name="android:fontFamily">#font/some_bold_font</item>
</style>
The non-bold variant of the style was added as a style before the bold variant as below.
//This style was added
<style name="HeadLine.SM.White.MyFont">
<item name="android:fontFamily">#font/some_font</item>
</style>
<style name="HeadLine.SM.White.MyFontBold">
<item name="android:fontFamily">#font/some_bold_font</item>
</style>
For some reason, after the non-bold style variant was added all transparent activities had a black screen. When we changed the non-bold variant style name to something else it fixed the problem for us.
Now our styles look like this (I know there are better ways to handle font styles - these styles are a few years old).
<style name="HeadLine.SM.White.MyFontRegular">
<item name="android:fontFamily">#font/some_font</item>
</style>
<style name="HeadLine.SM.White.MyFontBold">
<item name="android:fontFamily">#font/some_bold_font</item>
</style>
Conclusion
It seemed that adding a new style where the name is a suffix of an existing style caused problems. If you're adding a new style make sure the name is not a suffix of an existing style.
We did try cleaning the build, rebuilding, and invalidating Android Studio caches. None of these things solved our problem.

Try the built-in #android:style/Theme.Translucent instead of your custom one, according to this blog post. I haven't tried to do this myself, so I don't know if the technique written about there works or not.

I found out, that another important child element for the style description above is <item name="android:windowIsTranslucent">true</item> was lacking.
Problem:
That child element also causes synchronizing the activity's orientation with the calling one. (same effect as #android:style/Theme.Translucent)

I bumped into the same problem as you describe (regarding translucent background and screen orientation), but in the end I reconciled with the fact that this is just how it works. In fact it actually makes sense that it works this way. I can't think of any screen based system that supports mixing portrait and landscape views, so why should Android?
I guess the general rule is that all visible activities must have the same orientation, regardless of the attributes in the manifest-file. If all are set to "sensor" then they will all change, if one is fixed to portrait or landscape, then the others must follow (and whoever sets it last "wins").
I guess this was just so obvious to the developers that it didn't occur to them to document it :)

Remove and all its done
#Override
public void onAttachedToWindow() {}

Style name is having some effect on the transparent background to be black. I used below one and works fine.
<style name="Theme.AppCompat.Translucent">
<item name="android:windowNoTitle">true</item>
<item name="android:windowBackground">#android:color/transparent</item>
<item name="android:colorBackgroundCacheHint">#null</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowAnimationStyle">#android:style/Animation</item>
</style>
<!-- AndroidManifest.xml -->
<activity android:name=".TranslucentThemeActivity"
android:theme="#style/Theme.AppCompat.Translucent"/>