Added Android code

[wl-app.git] / Android / folioreader / src / main / java / com / folioreader / ui / base / HtmlTask.java

diff --git a/Android/folioreader/src/main/java/com/folioreader/ui/base/HtmlTask.java b/Android/folioreader/src/main/java/com/folioreader/ui/base/HtmlTask.java
new file mode 100755 (executable)
index 0000000..c890adf
--- /dev/null
+++ b/Android/folioreader/src/main/java/com/folioreader/ui/base/HtmlTask.java
@@ -0,0 +1,61 @@
+package com.folioreader.ui.base;
+
+import android.os.AsyncTask;
+import android.util.Log;
+
+import com.folioreader.util.AppUtil;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.net.URL;
+import java.net.URLConnection;
+
+/**
+ * Background async task which downloads the html content of a web page
+ * from server
+ *
+ * @author by gautam on 12/6/17.
+ */
+
+public class HtmlTask extends AsyncTask<String, Void, String> {
+
+    private static final String TAG = "HtmlTask";
+
+    private HtmlTaskCallback callback;
+
+    public HtmlTask(HtmlTaskCallback callback) {
+        this.callback = callback;
+    }
+
+    @Override
+    protected String doInBackground(String... urls) {
+        String strUrl = urls[0];
+        try {
+            URL url = new URL(strUrl);
+            URLConnection urlConnection = url.openConnection();
+            InputStream inputStream = urlConnection.getInputStream();
+            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream, AppUtil.charsetNameForURLConnection(urlConnection)));
+            StringBuilder stringBuilder = new StringBuilder();
+            String line;
+            while ((line = bufferedReader.readLine()) != null) {
+                stringBuilder.append(line);
+            }
+            return stringBuilder.toString();
+        } catch (IOException e) {
+            Log.e(TAG, "HtmlTask failed", e);
+        }
+        return null;
+    }
+
+    @Override
+    protected void onPostExecute(String htmlString) {
+        if (htmlString != null) {
+            callback.onReceiveHtml(htmlString);
+        } else {
+            callback.onError();
+        }
+        cancel(true);
+    }
+}