如何使用 FileProvider 共享使用适用于 android 10+ 的范围存储保存到共享存储的文件

如何解决如何使用 FileProvider 共享使用适用于 android 10+ 的范围存储保存到共享存储的文件

我正在开发一款图像编辑应用，该应用可根据此开发者指南 Save to Shared Storage 将图像保存到共享存储中。现在我需要将保存的图片分享到 Messenger、Whatsapp 或其他分享应用。

这是我实现的代码和截图：

我使用以下代码保存了图像：

private fun saveImage(testImage: Bitmap) {
val resolver = applicationContext.contentResolver

val imageCollection = MediaStore.Images.Media.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY)


Log.d("save_debug","saveImage: " + MimeTypeMap.getSingleton().getMimeTypeFromExtension("jpeg"))
val c = Calendar.getInstance().time
println("Current time => $c")

val df = SimpleDateFormat("dd-MMM-yyyy",Locale.getDefault())
val formattedDate: String = df.format(c)
filename = "${System.currentTimeMillis()}.jpg"
val imageDetails = ContentValues().apply {
put(MediaStore.Images.Media.DISPLAY_NAME,filename)
put(MediaStore.Images.Media.RELATIVE_PATH,"Pictures/Test")
put(MediaStore.Images.Media.MIME_TYPE,MimeTypeMap.getSingleton().getMimeTypeFromExtension("jpeg"))
put(MediaStore.Images.Media.DATE_ADDED,formattedDate)
put(MediaStore.Images.Media.DATE_MODIFIED,formattedDate)
put(MediaStore.Images.Media.BUCKET_DISPLAY_NAME,"test")
put(MediaStore.Images.Media.SIZE,testImage.byteCount)
put(MediaStore.Images.Media.WIDTH,testImage.width)
put(MediaStore.Images.Media.HEIGHT,testImage.height)
put(MediaStore.Images.Media.IS_PENDING,1)
}


imageContentUri = resolver.insert(imageCollection,imageDetails)
Log.d("save_debug","saveImage: $imageContentUri")

imageContentUri?.let {
resolver.openFileDescriptor(it,"w",null).use { pfd ->
// Write data into the pending audio file.
val output = FileOutputStream(pfd?.fileDescriptor)
testImage.compress(Bitmap.CompressFormat.JPEG,100,output)
}
}

imageDetails.clear()
imageDetails.put(MediaStore.Audio.Media.IS_PENDING,0)
if (imageContentUri != null) {
resolver.update(imageContentUri!!,imageDetails,null,null)
}

}

然后使用 FileProvider 共享图像：

清单：

<provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="com.kgs.scopestorageproject.fileprovider"
            android:grantUriPermissions="true"
            android:exported="false">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/filepaths" />
  </provider>

filepaths.xml 文件：

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <external-path name="my_images" path="Pictures/Test" />
</paths>

kotlin 代码（将文件名作为参数发送）：

private fun shareImage(filename: String) {
        
        // Created the image path using externalStoragePublicDirectory 
        val imagePath = File(Environment.getExternalStoragePublicDirectory(DIRECTORY_PICTURES),"Test")
        val newFile = File(imagePath,filename)
        
        
        // generated the content uri using file provider
        val contentUri = getUriForFile(this,"com.kgs.scopestorageproject.fileprovider",newFile)
        
        
        // created the share intent
        val shareIntent = Intent()
        shareIntent.action = Intent.ACTION_SEND
        
        // put the content URI in Extra_Stream,set the type 
        shareIntent.putExtra(Intent.EXTRA_STREAM,contentUri)
        shareIntent.type = "image/jpg"
        
        // I also tried to use the following setter to set the data 
//        shareIntent.setDataAndType(contentUri,contentResolver.getType(contentUri))
//        shareIntent.clipData = ClipData.newRawUri("",contentUri)
        
        // Granted temporary nd permanent both permission 
        grantUriPermission("com.kgs.scopestorageproject",contentUri,Intent.FLAG_GRANT_READ_URI_PERMISSION 
        or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
        shareIntent.addFlags(
                Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
        
        // Then started with chooser 
        startActivity(Intent.createChooser(shareIntent,"Share To"));
    }

它启动了选择器，并在选择后将我发送到 Messenger 或 whatsapp。但它说有问题或不支持文件格式：附上截图 - >

The screenshot of messenger after choose from chooser