Android : 04-TheFragmentClass: add

1 files changed, 83 insertions, 0 deletions

diff --git a/Android/04-TheFragmentClass/FragmentsLab/src/course/labs/fragmentslab/FeedFragmentData.java b/Android/04-TheFragmentClass/FragmentsLab/src/course/labs/fragmentslab/FeedFragmentData.java
new file mode 100644
index 0000000..fb09cae
--- /dev/null
+++ b/Android/04-TheFragmentClass/FragmentsLab/src/course/labs/fragmentslab/FeedFragmentData.java
@@ -0,0 +1,83 @@
+package course.labs.fragmentslab;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import android.content.Context;
+import android.util.Log;
+import android.util.SparseArray;
+
+// Utility class that provides stored Twitter feed data
+public class FeedFragmentData {
+    private static final String TAG = "FeedFragmentData";
+    private static final int[] IDS = { R.raw.ladygaga, R.raw.rebeccablack, R.raw.taylorswift };
+
+    private SparseArray<String> mFeeds = new SparseArray<String>();
+    private Context mContext;
+
+
+    public FeedFragmentData(Context context) {
+        mContext = context;
+        loadFeeds();
+    }
+
+    // Load all stored Twitter feeds into the mFeeds SparseArray.
+    private void loadFeeds() {
+        for (int id : IDS) {
+            InputStream inputStream = mContext.getResources().openRawResource(id);
+            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
+            StringBuffer buffer = new StringBuffer("");
+
+            // Read raw data from resource file
+            try {
+                String line = "";
+                while ((line = reader.readLine()) != null) {
+                    buffer.append(line);
+                }
+            } catch (IOException e) {
+                Log.i(TAG, "IOException");
+            }
+
+            // Convert raw data into a String
+            JSONArray feed = null;
+            try {
+                feed = new JSONArray(buffer.toString());
+            } catch (JSONException e) {
+                Log.i(TAG, "JSONException");
+            }
+            mFeeds.put(id, procFeed(feed));
+        }
+    }
+
+    // Convert JSON formatted data to a String
+    private String procFeed(JSONArray feed) {
+        String name = "";
+        String tweet = "";
+
+        // string buffer for twitter feeds
+        StringBuffer textFeed = new StringBuffer("");
+
+        for (int j = 0; j < feed.length(); j++) {
+            try {
+                tweet = feed.getJSONObject(j).getString("text");
+                JSONObject user = (JSONObject) feed.getJSONObject(j).get("user");
+                name = user.getString("name");
+            } catch (JSONException e) {
+                Log.i(TAG, "JSONException while processing feed");
+            }
+            textFeed.append(name + " - " + tweet + "\n\n");
+        }
+        return textFeed.toString();
+    }
+
+    // Return the Twitter feed data for the specified position as a single String
+    String getFeed (int position) {
+        return mFeeds.get(IDS[position]);
+    }
+}