FileBackend splitted into several util classes for separate concerns: AvatarUtil, StreamUtil, ImageUtil. Unused imports removed.

1 files changed, 48 insertions, 0 deletions

diff --git a/src/main/java/de/thedevstack/conversationsplus/utils/StreamUtil.java b/src/main/java/de/thedevstack/conversationsplus/utils/StreamUtil.java
new file mode 100644
index 00000000..64f46314
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/utils/StreamUtil.java
@@ -0,0 +1,48 @@
+package de.thedevstack.conversationsplus.utils;
+
+import android.net.Uri;
+
+import java.io.Closeable;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+
+import de.thedevstack.conversationsplus.ConversationsPlusApplication;
+
+/**
+ * Util to handle streams.
+ */
+public final class StreamUtil {
+
+    /**
+     * Opens an InputStream from Uri using the ContentResolver from application.
+     * @see android.content.ContentResolver#openInputStream(Uri)
+     * @param uri the uri to open
+     * @return the InputStream for given uri
+     * @throws FileNotFoundException if the provided URI could not be opened.
+     */
+    public static InputStream openInputStreamFromContentResolver(Uri uri) throws FileNotFoundException {
+        return ConversationsPlusApplication.getInstance().getContentResolver().openInputStream(uri);
+    }
+
+    /**
+     * Closes a stream.
+     * IOException is silently ignored.
+     * @param stream the stream to close
+     */
+    public static void close(Closeable stream) {
+        if (stream != null) {
+            try {
+                stream.close();
+            } catch (IOException e) {
+            }
+        }
+    }
+
+    /**
+     * Avoid instantiation of util class.
+     */
+    private StreamUtil() {
+        // Static helper class
+    }
+}