Introduced FileProvider to fix #627 (#629)

src/main/AndroidManifest.xml

@@ -148,7 +148,17 @@
         <meta-data android:name="com.sec.android.multiwindow.DEFAULT_SIZE_H" android:resource="@dimen/app_defaultsize_h" />
         <meta-data android:name="com.sec.android.multiwindow.MINIMUM_SIZE_W" android:resource="@dimen/app_minimumsize_w" />
         <meta-data android:name="com.sec.android.multiwindow.MINIMUM_SIZE_H" android:resource="@dimen/app_minimumsize_h" />
-
+
+		<provider
+				android:name="android.support.v4.content.FileProvider"
+				android:authorities="org.quantumbadger.redreader.provider"
+				android:exported="false"
+				android:grantUriPermissions="true">
+			<meta-data
+					android:name="android.support.FILE_PROVIDER_PATHS"
+					android:resource="@xml/file_paths">
+			</meta-data>
+		</provider>
     </application>
 
 </manifest>

src/main/java/org/quantumbadger/redreader/image/ShareImageCallback.java

@@ -20,6 +20,7 @@
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Environment;
+import android.support.v4.content.FileProvider;
 import android.support.v7.app.AppCompatActivity;
 import org.quantumbadger.redreader.R;
 import org.quantumbadger.redreader.account.RedditAccount;
@@ -135,6 +136,12 @@ protected void onSuccess(
 							}
 						}
 
+						Uri sharedImage = FileProvider.getUriForFile(
+								context,
+								"org.quantumbadger.redreader.provider",
+								dst
+						);
+
 						try {
 							final InputStream cacheFileInputStream = cacheFile.getInputStream();
 
@@ -147,7 +154,7 @@ protected void onSuccess(
 
 							Intent shareIntent = new Intent();
 							shareIntent.setAction(Intent.ACTION_SEND);
-							shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://" + dst.getAbsolutePath()));
+							shareIntent.putExtra(Intent.EXTRA_STREAM, sharedImage);
 							shareIntent.setType(mimetype);
 							activity.startActivity(Intent.createChooser(shareIntent, activity.getString(R.string.action_share_image)));
 
@@ -157,7 +164,7 @@ protected void onSuccess(
 						}
 
 						activity.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,
-								Uri.parse("file://" + dst.getAbsolutePath()))
+								sharedImage)
 						);
 
 						General.quickToast(context, context.getString(R.string.action_save_image_success) + " " + dst.getAbsolutePath());

src/main/res/xml/file_paths.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+	<external-path name="external_files" path="." />
+</paths>