take photo and save to Album,but error

Question

I use the codes to take photo and save it.
private async void btnCamera_Clicked(object sender, EventArgs e)
{
var photo = await CrossMedia.Current.TakePhotoAsync(
new StoreCameraMediaOptions
{
SaveToAlbum = true
});
}
But error, vs2022 tell that
System.ArgumentException: 'Unable to get file location. This most likely means that the file provider information is not set in your Android Manifest file. Please check documentation on how to set this up in your project.'

I have add the info to AndroidManifest.xml, but error too.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.cartooncamera">
<uses-sdk android:minSdkVersion="21" android:targetSdkVersion="30" />
<application android:label="CartoonCamera.Android" android:theme="@STYLE /MainTheme"></application>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
</manifest>

Answer 1

Hello,​

Welcome to our Microsoft Q&A platform!

But error, vs2022 tell that
System.ArgumentException: 'Unable to get file location. This most likely means that the file provider information is not set in your Android Manifest file. Please check >documentation on how to set this up in your project.'

I have add the info to AndroidManifest.xml, but error too.

No, you did not add <provider> tag like following format to the AndroidManifest.xml.

   <?xml version="1.0" encoding="utf-8"?>  
   <manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.startactivitydemo11">  
       <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="30" />  
       <application android:label="StartActivityDemo11.Android" android:theme="@style/MainTheme">  


      <!--add this part-->  
         <provider android:name="androidx.core.content.FileProvider"  
              android:authorities="${applicationId}.fileprovider"  
              android:exported="false"  
              android:grantUriPermissions="true">  

           <meta-data android:name="android.support.FILE_PROVIDER_PATHS"  
                            android:resource="@xml/file_paths"></meta-data>  
         </provider>  
       </application>  



     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />  
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />  
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />  
     <uses-permission android:name="android.permission.CAMERA" />  
   </manifest>  

Here are steps to add the <provider> tag.

If you target framework set Android 10 or later.

1 (AndroidX) Add the following to your AndroidManifest.xml inside the <application> tags:

   <provider android:name="androidx.core.content.FileProvider"   
             android:authorities="${applicationId}.fileprovider"   
             android:exported="false"   
             android:grantUriPermissions="true">  

      <meta-data android:name="android.support.FILE_PROVIDER_PATHS"   
                        android:resource="@xml/file_paths"></meta-data>  
   </provider>  

2 Add a new folder called xml into your Resources folder and add a new XML file called file_paths.xml. Make sure that this XML file has a Build Action of: AndroidResource.

3 Add the following code to file_paths.xml:

   <?xml version="1.0" encoding="utf-8" ?>  
     <paths xmlns:android="http://schemas.android.com/apk/res/android">  
       <external-files-path name="my_images" path="Pictures" />  
       <external-files-path name="my_movies" path="Movies" />  
     </paths>  

If you target framework blew Android 10 .

(Non AndroidX) Add the following to your AndroidManifest.xml inside the <application> tags: Other steps is the same as above AndroidX

   <provider android:name="android.support.v4.content.FileProvider"   
             android:authorities="${applicationId}.fileprovider"   
             android:exported="false"   
             android:grantUriPermissions="true">  

      <meta-data android:name="android.support.FILE_PROVIDER_PATHS"   
                        android:resource="@xml/file_paths"></meta-data>  
   </provider>  

You can read more at: https://developer.android.com/training/camera/photobasics.html

Best Regards,

Leon Lu

---

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Answer 2

I use android 10 api 29.
I have add MANAGE_EXTERNAL_STORAGE to file.
I do not find the image by camera take at album.
How to use fileUpdate?

Answer 3

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.cartooncamera">
<uses-sdk android:minSdkVersion="21" android:targetSdkVersion="30" />
<application android:label="CartoonCamera.Android" android:theme="@STYLE /MainTheme">
<provider android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@XML /file_paths"></meta-data>
</provider>
</application>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE " />
</manifest>

Answer 4

LeonLu-MSFT ：
Thank you very much.
Your code work well at my android 10 phone.