fix some Android 7 file uri crashes

app/src/main/AndroidManifest.xml

@@ -158,5 +158,15 @@
                 <category android:name="android.intent.category.DEFAULT"/>
             </intent-filter>
         </activity>
+
+        <provider
+            android:name="android.support.v4.content.FileProvider"
+            android:authorities="${applicationId}.provider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/provider_paths"/>
+        </provider>
     </application>
 </manifest>

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

@@ -5,7 +5,6 @@ import android.app.WallpaperManager
 import android.content.Intent
 import android.graphics.Bitmap
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
 import android.support.v7.widget.GridLayoutManager
 import android.util.Log
@@ -333,8 +332,7 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
         } else {
             val file = File(path)
             val isVideo = file.isVideoFast()
-            val isNougat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N
-            if (isVideo && !isNougat) {
+            if (isVideo) {
                 openWith(file, false)
             } else {
                 Intent(this, ViewPagerActivity::class.java).apply {

app/src/main/kotlin/com/simplemobiletools/gallery/extensions/activity.kt

@@ -4,6 +4,7 @@ import android.app.Activity
 import android.content.Intent
 import android.net.Uri
 import android.os.Build
+import android.support.v4.content.FileProvider
 import android.support.v7.app.AppCompatActivity
 import android.util.DisplayMetrics
 import android.view.KeyCharacterMap
@@ -36,7 +37,7 @@ fun Activity.shareUri(medium: Medium, uri: Uri) {
 fun Activity.shareMedium(medium: Medium) {
     val shareTitle = resources.getString(R.string.share_via)
     val file = File(medium.path)
-    val uri = Uri.fromFile(file)
+    val uri = FileProvider.getUriForFile(this, "$packageName.provider", file)
     Intent().apply {
         action = Intent.ACTION_SEND
         putExtra(Intent.EXTRA_STREAM, uri)
@@ -54,7 +55,7 @@ fun Activity.shareMedia(media: List<Medium>) {
         type = "image/* video/*"
         addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
         media.map { File(it.path) }
-                .mapTo(uris) { Uri.fromFile(it) }
+                .mapTo(uris) { FileProvider.getUriForFile(this@shareMedia, "$packageName.provider", it) }
 
         putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris)
         startActivity(Intent.createChooser(this, shareTitle))
@@ -62,7 +63,7 @@ fun Activity.shareMedia(media: List<Medium>) {
 }
 
 fun Activity.setAsWallpaper(file: File) {
-    val uri = Uri.fromFile(file)
+    val uri = FileProvider.getUriForFile(this, "$packageName.provider", file)
     Intent().apply {
         action = Intent.ACTION_ATTACH_DATA
         setDataAndType(uri, file.getMimeType("image/*"))
@@ -78,7 +79,7 @@ fun Activity.setAsWallpaper(file: File) {
 }
 
 fun Activity.openWith(file: File, forceChooser: Boolean = true) {
-    val uri = Uri.fromFile(file)
+    val uri = FileProvider.getUriForFile(this, "$packageName.provider", file)
     Intent().apply {
         action = Intent.ACTION_VIEW
         setDataAndType(uri, file.getMimeType("image/jpeg"))
@@ -94,9 +95,10 @@ fun Activity.openWith(file: File, forceChooser: Boolean = true) {
 }
 
 fun Activity.openEditor(file: File) {
+    val uri = FileProvider.getUriForFile(this, "$packageName.provider", file)
     Intent().apply {
         action = Intent.ACTION_EDIT
-        setDataAndType(Uri.fromFile(file), "image/*")
+        setDataAndType(uri, "image/*")
         addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
 
         if (resolveActivity(packageManager) != null) {

app/src/main/res/xml/provider_paths.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths>
+    <external-path name="external_files" path="."/>
+</paths>