share pictures across apps (#129)

* share implemented

* added test for share intent

app/src/androidTest/java/com/h/pixeldroid/PostTest.kt

@@ -4,19 +4,27 @@ import android.content.Context
 import android.content.Intent
 import androidx.test.core.app.ActivityScenario
 import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.action.ViewActions
 import androidx.test.espresso.action.ViewActions.click
 import androidx.test.espresso.action.ViewActions.longClick
 import androidx.test.espresso.assertion.ViewAssertions.matches
+import androidx.test.espresso.intent.Intents
+import androidx.test.espresso.intent.matcher.IntentMatchers
+import androidx.test.espresso.intent.rule.IntentsTestRule
 import androidx.test.espresso.matcher.RootMatchers
 import androidx.test.espresso.matcher.ViewMatchers.isDisplayed
 import androidx.test.espresso.matcher.ViewMatchers.withId
 import androidx.test.espresso.matcher.ViewMatchers.withText
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.rule.GrantPermissionRule
 import com.h.pixeldroid.objects.Account
 import com.h.pixeldroid.objects.Attachment
 import com.h.pixeldroid.objects.Status
 import com.h.pixeldroid.testUtility.MockServer
+import org.hamcrest.CoreMatchers
+import org.hamcrest.Matcher
+import org.junit.After
 import org.junit.Before
 import org.junit.Rule
 import org.junit.Test
@@ -43,6 +51,7 @@ class PostTest {
             Context.MODE_PRIVATE)
         preferences.edit().putString("accessToken", "azerty").apply()
         preferences.edit().putString("domain", baseUrl.toString()).apply()
+        Intents.init()
     }
 
     @Test
@@ -100,4 +109,62 @@ class PostTest {
         ).check(matches(isDisplayed()))
         Thread.sleep(5000)
     }
+
+    @Test
+    fun shareTestSimplePost() {
+        val expectedIntent: Matcher<Intent> = IntentMatchers.hasAction(Intent.ACTION_CHOOSER)
+        val attachment = Attachment(
+            id = "12",
+            url = "https://wiki.gnugen.ch/lib/tpl/gnugen/images/logo_web.png"
+        )
+        val post = Status(
+            id = "12",
+            account = Account(
+                id = "12",
+                username = "douze"
+            ),
+            media_attachments = listOf(attachment)
+        )
+        val intent = Intent(context, PostActivity::class.java)
+        intent.putExtra(Status.POST_TAG, post)
+        ActivityScenario.launch<PostActivity>(intent)
+        onView(withId(R.id.postPicture)).perform(longClick())
+        onView(withText(R.string.share_picture)).inRoot(RootMatchers.isPlatformPopup()).perform(click())
+        Thread.sleep(2000)
+        Intents.intended(expectedIntent)
+    }
+
+    @Test
+    fun shareIntentAlbumTest() {
+        val expectedIntent: Matcher<Intent> = IntentMatchers.hasAction(Intent.ACTION_CHOOSER)
+        val attachment1 = Attachment(
+            id = "12",
+            url = "https://wiki.gnugen.ch/lib/tpl/gnugen/images/logo_web.png"
+        )
+        val attachment2 = Attachment(
+            id = "13",
+            url = "https://wiki.gnugen.ch/lib/tpl/gnugen/images/logo_web.png"
+        )
+        val post = Status(
+            id = "12",
+            account = Account(
+                id = "12",
+                username = "douze"
+            ),
+            media_attachments = listOf(attachment1, attachment2)
+        )
+        val intent = Intent(context, PostActivity::class.java)
+        intent.putExtra(Status.POST_TAG, post)
+        ActivityScenario.launch<PostActivity>(intent)
+        onView(withId(R.id.imageImageView)).perform(longClick())
+        onView(withText(R.string.share_picture)).inRoot(RootMatchers.isPlatformPopup()).perform(click())
+        Thread.sleep(2000)
+        Intents.intended(expectedIntent)
+    }
+
+    @After
+    fun after() {
+        Intents.release()
+    }
+
 }

app/src/main/java/com/h/pixeldroid/ImageFragment.kt

@@ -51,6 +51,10 @@ class ImageFragment : Fragment() {
                             ImageUtils.downloadImage(requireActivity(), view.context, imgUrl)
                             true
                         }
+                        R.id.image_popup_menu_share_picture ->  {
+                            ImageUtils.downloadImage(requireActivity(), view.context, imgUrl, share = true)
+                            true
+                        }
                         else -> false
                     }
                 }

app/src/main/java/com/h/pixeldroid/objects/Status.kt

@@ -1,9 +1,13 @@
 package com.h.pixeldroid.objects
 
-import android.app.Activity
+import android.content.ContentValues
 import android.content.Context
+import android.content.Intent
+import android.graphics.Bitmap
 import android.graphics.Typeface
 import android.graphics.drawable.Drawable
+import android.net.Uri
+import android.provider.MediaStore
 import android.text.Spanned
 import android.text.method.LinkMovementMethod
 import android.util.Log
@@ -16,15 +20,15 @@ import android.widget.LinearLayout
 import android.widget.PopupMenu
 import android.widget.TextView
 import android.widget.Toast
+import androidx.core.content.ContextCompat.startActivity
 import androidx.core.text.toSpanned
+import androidx.core.view.drawToBitmap
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentActivity
 import androidx.viewpager2.adapter.FragmentStateAdapter
-import androidx.viewpager2.widget.ViewPager2
 import com.bumptech.glide.RequestBuilder
 import com.google.android.material.tabs.TabLayoutMediator
 import com.h.pixeldroid.ImageFragment
-import com.h.pixeldroid.MainActivity
 import com.h.pixeldroid.R
 import com.h.pixeldroid.api.PixelfedAPI
 import com.h.pixeldroid.fragments.feeds.PostViewHolder
@@ -42,7 +46,10 @@ import kotlinx.android.synthetic.main.post_fragment.view.postPager
 import kotlinx.android.synthetic.main.post_fragment.view.postPicture
 import kotlinx.android.synthetic.main.post_fragment.view.postTabs
 import kotlinx.android.synthetic.main.post_fragment.view.profilePic
+import retrofit2.http.Url
+import java.io.OutputStream
 import java.io.Serializable
+import java.net.URL
 
 /*
 Represents a status posted by an account.
@@ -316,6 +323,10 @@ data class Status(
                                 downloadImage(activity, view.context, getPostUrl()!!)
                                 true
                             }
+                            R.id.image_popup_menu_share_picture -> {
+                                downloadImage(activity, view.context, getPostUrl()!!, share = true)
+                                true
+                            }
                             else -> false
                         }
                     }

app/src/main/java/com/h/pixeldroid/utils/ImageUtils.kt

@@ -1,19 +1,24 @@
 package com.h.pixeldroid.utils
 
 import android.app.DownloadManager
+import android.content.ContentValues
 import android.content.Context
+import android.content.Intent
 import android.database.Cursor
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
 import android.net.Uri
 import android.os.Environment
-import android.provider.Settings.Global.getString
+import android.provider.MediaStore.Images
 import android.widget.Toast
 import androidx.fragment.app.FragmentActivity
 import com.h.pixeldroid.R
 import java.io.File
 
+
 class ImageUtils {
     companion object {
-        fun downloadImage(activity: FragmentActivity, context: Context, url: String) {
+        fun downloadImage(activity: FragmentActivity, context: Context, url: String, share: Boolean = false) {
             var msg = ""
             var lastMsg = ""
             val directory = File(Environment.DIRECTORY_PICTURES)
@@ -24,6 +29,7 @@ class ImageUtils {
                     as DownloadManager
             val downloadUri = Uri.parse(url)
             val title = url.substring(url.lastIndexOf("/") + 1)
+            val ext = url.substring(url.lastIndexOf("."))
             val request = DownloadManager.Request(downloadUri).apply {
                 setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI
                         or DownloadManager.Request.NETWORK_MOBILE)
@@ -43,6 +49,7 @@ class ImageUtils {
                         downloading = false
                     }
                     val status = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS))
+                    if(!share) {
                         msg = when (status) {
                             DownloadManager.STATUS_FAILED ->
                                 context.getString(R.string.image_download_failed)
@@ -58,20 +65,34 @@ class ImageUtils {
                             }
                             lastMsg = msg
                         }
+                    } else if (status == DownloadManager.STATUS_SUCCESSFUL) {
+                        val icon: Bitmap = BitmapFactory.decodeFile(
+                            Uri.parse(cursor.getString(
+                                cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI)
+                            )).path
+                        )
+                        val intentShare = Intent(Intent.ACTION_SEND)
+                        intentShare.type = "image/$ext"
+                        val values = ContentValues()
+                        values.put(Images.Media.TITLE, title)
+                        values.put(Images.Media.MIME_TYPE, "image/$ext")
+                        val uri: Uri = context.contentResolver.insert(
+                            Images.Media.EXTERNAL_CONTENT_URI,
+                            values
+                        )!!
+                        try {
+                            val outstream = context.contentResolver.openOutputStream(uri)!!
+                            icon.compress(Bitmap.CompressFormat.JPEG, 100, outstream)
+                            outstream.close()
+                        } catch(e: Exception) {
+                            e.printStackTrace()
+                        }
+                        intentShare.putExtra(Intent.EXTRA_STREAM, uri)
+                        context.startActivity(Intent.createChooser(intentShare, "Share Image"))
+                    }
                     cursor.close()
                 }
             }).start()
         }
-
-        private fun statusMessage(url: String, directory: File, status: Int, context: Context): String {
-            return when (status) {
-                DownloadManager.STATUS_FAILED -> context.getString(R.string.image_download_failed)
-                DownloadManager.STATUS_RUNNING -> "Downloading..."
-                DownloadManager.STATUS_SUCCESSFUL -> "Image downloaded successfully in $directory" + File.separator + url.substring(
-                    url.lastIndexOf("/") + 1
-                )
-                else -> ""
-            }
-        }
     }
 }

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

@@ -2,4 +2,6 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:id="@+id/image_popup_menu_save_to_gallery"
         android:title="@string/save_to_gallery"/>
+    <item android:id="@+id/image_popup_menu_share_picture"
+        android:title="@string/share_picture"/>
 </menu>

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

@@ -49,4 +49,5 @@
     <string name="image_download_failed">Download has been failed, please try again</string>
     <string name="image_download_downloading">Downloading…</string>
     <string name="image_download_success">Image downloaded successfully</string>
+    <string name="share_picture">Share picture...</string>
 </resources>