fix #378, allow adding multiple items as email attachments

app/build.gradle

@@ -37,7 +37,7 @@ android {
 }
 
 dependencies {
-    compile 'com.simplemobiletools:commons:2.29.0'
+    compile 'com.simplemobiletools:commons:2.29.1'
     compile 'com.davemorrissey.labs:subsampling-scale-image-view:3.6.0'
     compile 'com.theartofdev.edmodo:android-image-cropper:2.4.0'
     compile 'com.bignerdranch.android:recyclerview-multiselect:0.2'

app/src/main/kotlin/com/simplemobiletools/gallery/activities/MainActivity.kt

@@ -2,6 +2,7 @@ package com.simplemobiletools.gallery.activities
 
 import android.Manifest
 import android.app.Activity
+import android.content.ClipData
 import android.content.Intent
 import android.content.pm.PackageManager
 import android.net.Uri
@@ -412,12 +413,33 @@ class MainActivity : SimpleActivity(), DirectoryAdapter.DirOperationsListener {
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, resultData: Intent?) {
         if (resultCode == Activity.RESULT_OK) {
-            if (requestCode == PICK_MEDIA && resultData?.data != null) {
+            if (requestCode == PICK_MEDIA && resultData != null) {
-                Intent().apply {
+                val resultIntent = Intent()
+                if (mIsGetImageContentIntent || mIsGetVideoContentIntent || mIsGetAnyContentIntent) {
+                    when {
+                        intent.extras?.containsKey(MediaStore.EXTRA_OUTPUT) == true -> fillExtraOutput(resultData)
+                        resultData.extras?.containsKey(PICKED_PATHS) == true -> fillPickedPaths(resultData, resultIntent)
+                        else -> fillIntentPath(resultData, resultIntent)
+                    }
+                } else if ((mIsPickImageIntent || mIsPickVideoIntent)) {
                     val path = resultData.data.path
                     val uri = Uri.fromFile(File(path))
-                    if (mIsGetImageContentIntent || mIsGetVideoContentIntent || mIsGetAnyContentIntent) {
+                    resultIntent.data = uri
-                        if (intent.extras?.containsKey(MediaStore.EXTRA_OUTPUT) == true) {
+                    resultIntent.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
+                }
+
+                setResult(Activity.RESULT_OK, resultIntent)
+                finish()
+            } else if (requestCode == PICK_WALLPAPER) {
+                setResult(Activity.RESULT_OK)
+                finish()
+            }
+        }
+        super.onActivityResult(requestCode, resultCode, resultData)
+    }
+
+    private fun fillExtraOutput(resultData: Intent) {
+        val path = resultData.data.path
         var inputStream: InputStream? = null
         var outputStream: OutputStream? = null
         try {
@@ -430,25 +452,26 @@ class MainActivity : SimpleActivity(), DirectoryAdapter.DirOperationsListener {
             inputStream?.close()
             outputStream?.close()
         }
-                        } else {
-                            val type = File(path).getMimeType("image/jpeg")
-                            setDataAndTypeAndNormalize(uri, type)
-                            flags = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
-                        }
-                    } else if (mIsPickImageIntent || mIsPickVideoIntent) {
-                        data = uri
-                        flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
     }
 
-                    setResult(Activity.RESULT_OK, this)
+    private fun fillPickedPaths(resultData: Intent, resultIntent: Intent) {
+        val paths = resultData.extras.getStringArrayList(PICKED_PATHS)
+        val uris = paths.map { Uri.fromFile(File(it)) } as ArrayList
+        val clipData = ClipData("Attachment", arrayOf("image/*", "video/*"), ClipData.Item(uris.removeAt(0)))
+
+        uris.forEach {
+            clipData.addItem(ClipData.Item(it))
         }
-                finish()
+
-            } else if (requestCode == PICK_WALLPAPER) {
+        resultIntent.clipData = clipData
-                setResult(Activity.RESULT_OK)
-                finish()
     }
-        }
+
-        super.onActivityResult(requestCode, resultCode, resultData)
+    private fun fillIntentPath(resultData: Intent, resultIntent: Intent) {
+        val path = resultData.data.path
+        val uri = Uri.fromFile(File(path))
+        val type = File(path).getMimeType("image/jpeg")
+        resultIntent.setDataAndTypeAndNormalize(uri, type)
+        resultIntent.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
     }
 
     private fun itemClicked(path: String) {
@@ -462,6 +485,7 @@ class MainActivity : SimpleActivity(), DirectoryAdapter.DirOperationsListener {
                 putExtra(GET_IMAGE_INTENT, mIsPickImageIntent || mIsGetImageContentIntent)
                 putExtra(GET_VIDEO_INTENT, mIsPickVideoIntent || mIsGetVideoContentIntent)
                 putExtra(GET_ANY_INTENT, mIsGetAnyContentIntent)
+                putExtra(Intent.EXTRA_ALLOW_MULTIPLE, intent.getBooleanExtra(Intent.EXTRA_ALLOW_MULTIPLE, false))
                 startActivityForResult(this, PICK_MEDIA)
             }
         }

app/src/main/kotlin/com/simplemobiletools/gallery/activities/MediaActivity.kt

@@ -46,6 +46,7 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
     private var mIsGetVideoIntent = false
     private var mIsGetAnyIntent = false
     private var mIsGettingMedia = false
+    private var mAllowPickingMultiple = false
     private var mShowAll = false
     private var mLoadedInitialPhotos = false
     private var mStoredAnimateGifs = true
@@ -68,6 +69,7 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
             mIsGetImageIntent = getBooleanExtra(GET_IMAGE_INTENT, false)
             mIsGetVideoIntent = getBooleanExtra(GET_VIDEO_INTENT, false)
             mIsGetAnyIntent = getBooleanExtra(GET_ANY_INTENT, false)
+            mAllowPickingMultiple = getBooleanExtra(Intent.EXTRA_ALLOW_MULTIPLE, false)
         }
 
         media_refresh_layout.setOnRefreshListener({ getMedia() })
@@ -159,7 +161,7 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
 
         val currAdapter = media_grid.adapter
         if (currAdapter == null) {
-            media_grid.adapter = MediaAdapter(this, mMedia, this, mIsGetAnyIntent) {
+            media_grid.adapter = MediaAdapter(this, mMedia, this, mIsGetAnyIntent, mAllowPickingMultiple) {
                 itemClicked(it.path)
             }
         } else {
@@ -561,4 +563,12 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
     override fun itemLongClicked(position: Int) {
         media_grid.setDragSelectActive(position)
     }
+
+    override fun selectedPaths(paths: ArrayList<String>) {
+        Intent().apply {
+            putExtra(PICKED_PATHS, paths)
+            setResult(Activity.RESULT_OK, this)
+        }
+        finish()
+    }
 }

app/src/main/kotlin/com/simplemobiletools/gallery/adapters/MediaAdapter.kt

@@ -25,7 +25,7 @@ import java.io.File
 import java.util.*
 
 class MediaAdapter(val activity: SimpleActivity, var media: MutableList<Medium>, val listener: MediaOperationsListener?, val isPickIntent: Boolean,
-                   val itemClick: (Medium) -> Unit) : RecyclerView.Adapter<MediaAdapter.ViewHolder>() {
+                   val allowMultiplePicks: Boolean, val itemClick: (Medium) -> Unit) : RecyclerView.Adapter<MediaAdapter.ViewHolder>() {
 
     val multiSelector = MultiSelector()
     val config = activity.config
@@ -72,6 +72,7 @@ class MediaAdapter(val activity: SimpleActivity, var media: MutableList<Medium>,
     private val multiSelectorMode = object : ModalMultiSelectorCallback(multiSelector) {
         override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
             when (item.itemId) {
+                R.id.cab_confirm_selection -> confirmSelection()
                 R.id.cab_properties -> showProperties()
                 R.id.cab_rename -> renameFile()
                 R.id.cab_edit -> editFile()
@@ -97,6 +98,7 @@ class MediaAdapter(val activity: SimpleActivity, var media: MutableList<Medium>,
         override fun onPrepareActionMode(actionMode: ActionMode?, menu: Menu): Boolean {
             menu.findItem(R.id.cab_rename).isVisible = selectedPositions.size <= 1
             menu.findItem(R.id.cab_edit).isVisible = selectedPositions.size == 1 && media.size > selectedPositions.first() && media[selectedPositions.first()].isImage()
+            menu.findItem(R.id.cab_confirm_selection).isVisible = isPickIntent && allowMultiplePicks && selectedPositions.size > 0
 
             checkHideBtnVisibility(menu)
 
@@ -127,6 +129,11 @@ class MediaAdapter(val activity: SimpleActivity, var media: MutableList<Medium>,
         }
     }
 
+    private fun confirmSelection() {
+        val paths = getSelectedMedia().map { it.path } as ArrayList<String>
+        listener?.selectedPaths(paths)
+    }
+
     private fun showProperties() {
         if (selectedPositions.size <= 1) {
             PropertiesDialog(activity, media[selectedPositions.first()].path, config.shouldShowHidden)
@@ -247,7 +254,7 @@ class MediaAdapter(val activity: SimpleActivity, var media: MutableList<Medium>,
     override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int): ViewHolder {
         val layoutType = if (isListViewType) R.layout.photo_video_item_list else R.layout.photo_video_item_grid
         val view = LayoutInflater.from(parent?.context).inflate(layoutType, parent, false)
-        return ViewHolder(view, adapterListener, activity, multiSelectorMode, multiSelector, listener, isPickIntent, itemClick)
+        return ViewHolder(view, adapterListener, activity, multiSelectorMode, multiSelector, listener, allowMultiplePicks || !isPickIntent, itemClick)
     }
 
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
@@ -319,7 +326,8 @@ class MediaAdapter(val activity: SimpleActivity, var media: MutableList<Medium>,
     }
 
     class ViewHolder(val view: View, val adapterListener: MyAdapterListener, val activity: SimpleActivity, val multiSelectorCallback: ModalMultiSelectorCallback,
-                     val multiSelector: MultiSelector, val listener: MediaOperationsListener?, val isPickIntent: Boolean, val itemClick: (Medium) -> (Unit)) :
+                     val multiSelector: MultiSelector, val listener: MediaOperationsListener?, val allowMultiplePicks: Boolean,
+                     val itemClick: (Medium) -> (Unit)) :
             SwappingHolder(view, MultiSelector()) {
         fun bindView(medium: Medium, displayFilenames: Boolean, scrollVertically: Boolean, isListViewType: Boolean, textColor: Int): View {
             itemView.apply {
@@ -334,7 +342,7 @@ class MediaAdapter(val activity: SimpleActivity, var media: MutableList<Medium>,
                 }
 
                 setOnClickListener { viewClicked(medium) }
-                setOnLongClickListener { if (isPickIntent) viewClicked(medium) else viewLongClicked(); true }
+                setOnLongClickListener { if (allowMultiplePicks) viewLongClicked() else viewClicked(medium); true }
             }
             return itemView
         }
@@ -377,5 +385,7 @@ class MediaAdapter(val activity: SimpleActivity, var media: MutableList<Medium>,
         fun deleteFiles(files: ArrayList<File>)
 
         fun itemLongClicked(position: Int)
+
+        fun selectedPaths(paths: ArrayList<String>)
     }
 }

app/src/main/kotlin/com/simplemobiletools/gallery/dialogs/PickMediumDialog.kt

@@ -47,7 +47,7 @@ class PickMediumDialog(val activity: SimpleActivity, val path: String, val callb
             return
 
         shownMedia = media
-        val adapter = MediaAdapter(activity, media, null, true) {
+        val adapter = MediaAdapter(activity, media, null, true, false) {
             callback(it.path)
             dialog.dismiss()
         }

app/src/main/kotlin/com/simplemobiletools/gallery/helpers/Constants.kt

@@ -63,6 +63,7 @@ val SET_WALLPAPER_INTENT = "set_wallpaper_intent"
 val DIRECTORIES = "directories2"
 val IS_VIEW_INTENT = "is_view_intent"
 val IS_FROM_GALLERY = "is_from_gallery"
+val PICKED_PATHS = "picked_paths"
 
 val REQUEST_EDIT_IMAGE = 1
 val REQUEST_SET_AS = 2

app/src/main/res/menu/cab_media.xml

@@ -1,6 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/cab_confirm_selection"
+        android:icon="@drawable/ic_check"
+        android:title="@string/confirm_selection"
+        app:showAsAction="ifRoom"/>
     <item
         android:id="@+id/cab_delete"
         android:icon="@drawable/ic_delete"