Android : 04-TheFragmentClass: add

1 files changed, 75 insertions, 0 deletions

diff --git a/Android/04-TheFragmentClass/FragmentsLab/src/course/labs/fragmentslab/FriendsFragment.java b/Android/04-TheFragmentClass/FragmentsLab/src/course/labs/fragmentslab/FriendsFragment.java
new file mode 100644
index 0000000..3d18ee6
--- /dev/null
+++ b/Android/04-TheFragmentClass/FragmentsLab/src/course/labs/fragmentslab/FriendsFragment.java
@@ -0,0 +1,75 @@
+package course.labs.fragmentslab;
+
+import android.app.Activity;
+import android.app.ListFragment;
+import android.os.Build;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+
+public class FriendsFragment extends ListFragment {
+
+    private static final String[] FRIENDS = { "ladygaga", "msrebeccablack", "taylorswift13" };
+    private static final String TAG = "Lab-Fragments";
+
+    public interface SelectionListener {
+        public void onItemSelected(int position);
+    }
+
+    private SelectionListener mCallback;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        // use different layout definition, depending on whether device is pre-
+        // or post-honeycomb
+        int layout = Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB ? android.R.layout.simple_list_item_activated_1 : android.R.layout.simple_list_item_1;
+        // Set the list adapter for this ListFragment
+        setListAdapter(new ArrayAdapter<String>(getActivity(), layout, FRIENDS));
+    }
+
+    @Override
+    public void onAttach(Activity activity) {
+        super.onAttach(activity);
+        // Make sure that the hosting Activity has implemented
+        // the SelectionListener callback interface. We need this
+        // because when an item in this ListFragment is selected,
+        // the hosting Activity's onItemSelected() method will be called.
+        try {
+            mCallback = (SelectionListener) activity;
+
+        } catch (ClassCastException e) {
+            throw new ClassCastException(activity.toString() + " must implement SelectionListener");
+        }
+    }
+
+    // Note: ListFragments come with a default onCreateView() method.
+    // For other Fragments you'll normally implement this method.
+    // @Override
+    //  public View onCreateView(LayoutInflater inflater, ViewGroup container,
+    //  Bundle savedInstanceState)
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        Log.i(TAG, "Entered onActivityCreated()");
+        // When using two-pane layout, configure the ListView to highlight the
+        // selected list item
+        if (isInTwoPaneMode()) {
+            getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
+        }
+    }
+
+    @Override
+    public void onListItemClick(ListView l, View view, int position, long id) {
+        // Notify the hosting Activity that a selection has been made.
+        mCallback.onItemSelected(position);
+    }
+
+    // If there is a FeedFragment, then the layout is two-pane
+    private boolean isInTwoPaneMode() {
+        return getFragmentManager().findFragmentById(R.id.feed_frag) != null;
+    }
+}