Added autocomplete to 'Default Activity Type' field.

MyTracks/res/xml/preferences.xml

@@ -152,7 +152,7 @@ limitations under the License.
         android:summaryOff="@string/settings_timestamp_track_name_summary_off"
         android:defaultValue="true" />
         
-    <EditTextPreference
+    <com.google.android.apps.mytracks.AutoCompleteTextPreference
         android:key="@string/default_category_key"
         android:title="@string/settings_default_category"
         android:summary="@string/settings_default_category_summary"

MyTracks/src/com/google/android/apps/mytracks/AutoCompleteTextPreference.java

@@ -0,0 +1,64 @@
+package com.google.android.apps.mytracks;
+
+import com.google.android.maps.mytracks.R;
+
+import android.content.Context;
+import android.preference.EditTextPreference;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewParent;
+import android.widget.ArrayAdapter;
+import android.widget.AutoCompleteTextView;
+
+/**
+ * The {@link AutoCompleteTextPreference} class is a preference that allows for
+ * string input using auto complete . It is a subclass of
+ * {@link EditTextPreference} and shows the {@link AutoCompleteTextView} in a
+ * dialog.
+ * <p>
+ * This preference will store a string into the SharedPreferences.
+ * 
+ * @author Rimas Trumpa (with Matt Levan)
+ */
+public class AutoCompleteTextPreference extends EditTextPreference {
+
+  private static AutoCompleteTextView mEditText = null;
+
+  public AutoCompleteTextPreference(Context context, AttributeSet attrs) {
+    super(context, attrs);
+    mEditText = new AutoCompleteTextView(context, attrs);
+    mEditText.setThreshold(0);
+
+    // Gets autocomplete values for 'Default Activity' preference
+    if (getKey().equals(context.getString(R.string.default_category_key))) {
+      ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(context,
+          R.array.activity_types, android.R.layout.simple_dropdown_item_1line);
+      mEditText.setAdapter(adapter);
+    }
+  }
+
+  @Override
+  protected void onBindDialogView(View view) {
+    AutoCompleteTextView editText = mEditText;
+    editText.setText(getText());
+
+    ViewParent oldParent = editText.getParent();
+    if (oldParent != view) {
+      if (oldParent != null) {
+        ((ViewGroup) oldParent).removeView(editText);
+      }
+      onAddEditTextToDialogView(view, editText);
+    }
+  }
+
+  @Override
+  protected void onDialogClosed(boolean positiveResult) {
+    if (positiveResult) {
+      String value = mEditText.getText().toString();
+      if (callChangeListener(value)) {
+        setText(value);
+      }
+    }
+  }
+}