multiple media upload support (#2029)

* multiple media upload support

* multiple media upload support

* multiple media upload support

* remove  typing

* Update app/src/main/res/values/strings.xml

Co-authored-by: Konrad Pozniak <connyduck@users.noreply.github.com>

* remove magic number on string.xml and add to activity.

Co-authored-by: Konrad Pozniak <connyduck@users.noreply.github.com>

app/src/main/java/com/keylesspalace/tusky/components/compose/ComposeActivity.kt

@@ -132,6 +132,7 @@ class ComposeActivity : BaseActivity(),
     val viewModel: ComposeViewModel by viewModels { viewModelFactory }
     private var suggestFormattingSyntax: String = "text/markdown"
 
+    private val maxUploadMediaNumber = 4
     private var mediaCount = 0
 
     public override fun onCreate(savedInstanceState: Bundle?) {
@@ -1073,6 +1074,8 @@ class ComposeActivity : BaseActivity(),
             intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes)
         }
         intent.type = "*/*"
+        intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes)
+        intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true)
         startActivityForResult(intent, MEDIA_PICK_RESULT)
     }
 
@@ -1099,7 +1102,23 @@ class ComposeActivity : BaseActivity(),
     override fun onActivityResult(requestCode: Int, resultCode: Int, intent: Intent?) {
         super.onActivityResult(requestCode, resultCode, intent)
         if (resultCode == Activity.RESULT_OK && requestCode == MEDIA_PICK_RESULT && intent != null) {
-            pickMedia(intent.data!!)
+            if(intent.data != null){
+                // Single media, upload it and done.
+                pickMedia(intent.data!!)
+            }else if(intent.clipData != null){
+                val clipData = intent.clipData!!
+                val count = clipData.itemCount
+                if(mediaCount + count > maxUploadMediaNumber){
+                    // check if exist media + upcoming media > 4, then prob error message.
+                    Toast.makeText(this, getString(R.string.error_upload_max_media_reached, maxUploadMediaNumber), Toast.LENGTH_SHORT).show()
+                }else{
+                    // if not grater then 4, upload all multiple media.
+                    for (i in 0 until count) {
+                            val imageUri = clipData.getItemAt(i).getUri()
+                            pickMedia(imageUri)
+                        }
+                    }
+            }
         } else if (resultCode == Activity.RESULT_OK && requestCode == MEDIA_TAKE_PHOTO_RESULT) {
             pickMedia(photoUploadUri!!)
         }

app/src/main/res/values/strings.xml

@@ -595,6 +595,7 @@
     <string name="limit_notifications">Limit timeline notifications</string>
     <string name="wellbeing_hide_stats_posts">Hide quantitative stats on posts</string>
     <string name="wellbeing_hide_stats_profile">Hide quantitative stats on profiles</string>
+    <string name="error_upload_max_media_reached">You cannot upload more than %1$d media attachments.</string>
 
     <string name="wellbeing_mode_notice">Some information that might affect your mental wellbeing will be hidden. This includes:\n\n
         - Favorite/Boost/Follow notifications\n