I have a Xamarin Forms project and now I'd like to improve it with the new Visual / Material features.
On IOS, it works like a charm.
On Android I have strange problems: after adding Xamarin.Forms.Visual.Material nuget I get weird error messages and my project does not build:
\res\values\values.xml(6): error APT0000: Attribute "statusBarBackground" already defined with incompatible format.
\res\values\values.xml(2): error APT0000: Original attribute defined here.
\res\values\values.xml(10): error APT0000: Attribute "layout_anchorGravity" already defined with incompatible format.
\res\values\values.xml(2): error APT0000: Original attribute defined here.
\res\values\values.xml(17): error APT0000: Attribute "layout_insetEdge" already defined with incompatible format.
\res\values\values.xml(2): error APT0000: Original attribute defined here.
\res\values\values.xml(17): error APT0000: Attribute "layout_dodgeInsetEdges" already defined with incompatible format.
\res\values\values.xml(2): error APT0000: Original attribute defined here.
\res\values\styles.xml(2): error APT0000: Error retrieving parent for item: No resource found that matches the given name 'Theme.MaterialComponents.Light.DarkActionBar'.
\res\values\styles.xml(2): error APT0000: No resource found that matches the given name: attr 'materialButtonStyle'.
\res\values\styles.xml(2): error APT0000: Error retrieving parent for item: No resource found that matches the given name 'Widget.MaterialComponents.Button'.
\res\values\styles.xml(2): error APT0000: Error retrieving parent for item: No resource found that matches the given name 'Widget.MaterialComponents.Button.OutlinedButton'.
\res\values\styles.xml(2): error APT0000: Error retrieving parent for item: No resource found that matches the given name 'Widget.MaterialComponents.TextInputLayout.FilledBox'.
\res\values\styles.xml(2): error APT0000: No resource found that matches the given name: attr 'boxCollapsedPaddingTop'.
I use Visual Studio 2017 Professional on Windows, I don't use any prerelease nuget.
Xamarin.Forms version is 3.6.0.293080.
Minimum Android API level is 21, target is 28, and compiled with 28.
Xamarin Android support libraries version is 28.0.0.1.
I tried the usual tricks (delete bin, obj dir, restart Visual Studio, run it in admin mode, delete Xamarin app data...) but neither helped.
The same thing happens if I create a new project from schratch, and don't do anything with it, just add visual.material nuget to the Android project.
Do you have any suggestions? Thanks a lot!
I had the same issue a few days ago where I first had TargetFramework set to Android 8.1, installed same packages and later changed it to Android9 and installed a new package.
The Xamarin.Forms.Visual.Material requires Android 9 to be set in Android project options and you previously had 8.1 configured and installed nuget packages for Android 8.1.
If you still use old packages.config like me to add NuGet packages, make sure you always see same monodroid string in hint path in the csproj and don't mix 81 with 90 and always have monoandroid90.
<Reference Include="Xamarin.Forms.Visual.Material , Version=3.6.0.293080, Culture=neutral, processorArchitecture=MSIL">
<HintPath>..\..\packages\Xamarin.Forms.Material.3.6.0.293080\lib\monoandroid90\Xamarin.Forms.Material.dll</HintPath>
</Reference>
After changing TargetFramework to 9, open Package Manager Console and run
Update-Package -Reinstall -IgnoreDependencies
to let VS update the packages.config and csproj.
I found this answer on github:
Migrating Package.json File to PackageReference to resolved problem.
1 - Click right on packages.config in Android Project
2 - Click on Migration Package.config to PackageReference
3 - Accept
4 - Run Project
Ref: https://github.com/xamarin/Xamarin.Forms/issues/5828
I also updated references with Nuget, done a clean, removed obj and bin fonder, and then Build.
I get the following error in xamarin Android:
SeverityCode Description Project File Line Suppression State Error No resource found that matches the given name (at 'value' with value '#integer/google_play_services_version').
Please help me resolve this issue.
I'm trying to fix a couple errors that I'm getting when trying to create a new Android Application Project in Eclipse.
The following errors occur:
[2016-11-17 15:22:52 - Chatter] C:\Users\Chris\AppData\Local\Android\sdk\extras\android\support\v7\appcompat\res\values-v23\styles_base.xml:20: error: Error retrieving parent for item: No resource found that matches the given name 'android:Widget.Material.Button.Colored'.
[2016-11-17 15:22:48 - Chatter]
[2016-11-17 15:22:48 - Chatter] C:\Users\Chris\AppData\Local\Android\sdk\extras\android\support\v7\appcompat\res\values-v23\styles_base_text.xml:19: error: Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Widget.Button.Inverse'.
[2016-11-17 15:22:48 - Chatter]
I have tried the following things:
Imported android-support-v7-appcompat into the project. Also created the reference.
Changed project.properties > target from android-19 to android-21
My project setup:
Minimum required SDK: API 14
Target SDK: API 21
Compile with: API 21
Blank Activity - Default names for everything.
enter image description hereI have installed the android sdk and trying to create a new project but i have encounter the issues in appcompat_v7. I have tried few ways to recover the issue through the google search like project->clean, Change the target as android-19 in project properties and set the java build path but none of these work out for me.
I have faced the following issue,
D:\NewWorkSpace\appcompat_v7\res\values-v21\styles_base.xml:75: error: Error retrieving parent for item: No resource found that matches the given name 'android:Widget.Material.ActionButton'.
D:\NewWorkSpace\appcompat_v7\res\values-v21\styles_base.xml:79: error: Error retrieving parent for item: No resource found that matches the given name 'android:Widget.Material.ActionButton.CloseMode'.
D:\NewWorkSpace\appcompat_v7\res\values-v21\styles_base.xml:84: error: Error retrieving parent for item: No resource found that matches the given name 'android:Widget.Material.ActionButton.Overflow'.
...etc
Then the appcompat_v7 and the folder res->values-v21->styles_base.xml
always shown in red color.
error: Error retrieving parent for item: No resource found that matches the given name 'android:Widget.Material.ActionButton'
In manifest set targetsdkVersion="21"
and
In project.properties set target=android-21
Im trying to add a Library Project (https://github.com/inmite/android-styled-dialogs) to my Android Studio project.
However I get the following build errors because my build is not able to reference the values in the Android-styled-dialog LibraryProject
android-apt-compiler: [NavigationDrawer] /Users/Jase/Downloads/NavigationDrawer/res/values-v11/themes_apptheme.xml:23: error: Error retrieving parent for item: No resource found that matches the given name 'DialogStyleLight'.
android-apt-compiler: [NavigationDrawer] /Users/Jase/Downloads/NavigationDrawer/res/values-v11/themes_apptheme.xml:30: error: Error: No resource found that matches the given name: attr 'buttonBackgroundColorNormal'.
android-apt-compiler: [NavigationDrawer] /Users/Jase/Downloads/NavigationDrawer/res/values-v11/themes_apptheme.xml:29: error: Error: No resource found that matches the given name: attr 'buttonSeparatorColor'.
....
I don't really know anything about Gradle but I feel that I possibly need to tell the build to reference Android-styled-dialog. I don't know I'm completely lost...
PS: When I created a new android studio project with the demo project for Android-Styled-Dialogs it created the following mavin file... which I don't have in my other project - https://gist.github.com/anonymous/8207108
I don't really know anything about Java build systems, please help