1 files changed, 72 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/ui/util/ViewUtil.java b/src/main/java/de/pixart/messenger/ui/util/ViewUtil.java
new file mode 100644
index 000000000..b1905479b
--- /dev/null
+++ b/src/main/java/de/pixart/messenger/ui/util/ViewUtil.java
@@ -0,0 +1,72 @@
+package de.pixart.messenger.ui.util;
+
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.net.Uri;
+import android.util.Log;
+import android.widget.Toast;
+
+import java.io.File;
+import java.util.List;
+
+import de.pixart.messenger.Config;
+import de.pixart.messenger.R;
+import de.pixart.messenger.persistance.FileBackend;
+import de.pixart.messenger.ui.ShowFullscreenMessageActivity;
+
+public class ViewUtil {
+
+    public static void view(Context context, Attachment attachment) {
+        File file = new File(attachment.getUri().getPath());
+        final String mime = attachment.getMime() == null ? "*/*" : attachment.getMime();
+        view(context, file, mime);
+    }
+
+    public static void view(Context context, File file, String mime) {
+        Uri uri;
+        try {
+            uri = FileBackend.getUriForFile(context, file);
+        } catch (SecurityException e) {
+            Log.d(Config.LOGTAG, "No permission to access " + file.getAbsolutePath(), e);
+            Toast.makeText(context, context.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
+            return;
+        }
+        // use internal viewer for images and videos
+        if (mime.startsWith("image/")) {
+            Intent intent = new Intent(context, ShowFullscreenMessageActivity.class);
+            intent.putExtra("image", Uri.fromFile(file));
+            try {
+                context.startActivity(intent);
+                return;
+            } catch (ActivityNotFoundException e) {
+                //ignored
+            }
+        } else if (mime.startsWith("video/")) {
+            Intent intent = new Intent(context, ShowFullscreenMessageActivity.class);
+            intent.putExtra("video", Uri.fromFile(file));
+            try {
+                context.startActivity(intent);
+                return;
+            } catch (ActivityNotFoundException e) {
+                //ignored
+            }
+        } else {
+            Intent openIntent = new Intent(Intent.ACTION_VIEW);
+            openIntent.setDataAndType(uri, mime);
+            openIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+            PackageManager manager = context.getPackageManager();
+            List<ResolveInfo> info = manager.queryIntentActivities(openIntent, 0);
+            if (info.size() == 0) {
+                openIntent.setDataAndType(uri, "*/*");
+            }
+            try {
+                context.startActivity(openIntent);
+            } catch (ActivityNotFoundException e) {
+                Toast.makeText(context, R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+}
+\ No newline at end of file