GestureListviewを説明するソース コードを含む Android ドキュメントの優れたチュートリアルを次に示します。しかし、onGesturePerformed(GestureOverlayView overlay, Gesture Gesture) メソッドでリスト項目の位置を取得する方法が見つかりませんか?
コード内のコメントを参照してください。私の質問を理解するためにマークしてください。ありがとうございました。
public class GesturesListActivity extends ListActivity implements OnGesturePerformedListener {
private GestureLibrary mLibrary;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Populate the activity with the names of our contacts
Cursor query = managedQuery(Contacts.People.CONTENT_URI,
new String[] { Contacts.People._ID, Contacts.People.DISPLAY_NAME },
null, null, Contacts.People.DEFAULT_SORT_ORDER);
ListAdapter adapter = new SimpleCursorAdapter(this,
android.R.layout.simple_list_item_1, query,
new String[] { Contacts.People.DISPLAY_NAME },
new int[] { android.R.id.text1 });
setListAdapter(adapter);
mLibrary = GestureLibraries.fromRawResource(this, R.raw.actions);
if (!mLibrary.load()) {
finish();
}
GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures);
gestures.addOnGesturePerformedListener(this);
}
public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) {
ArrayList<Prediction> predictions = mLibrary.recognize(gesture);
if (predictions.size() > 0) {
if (predictions.get(0).score > 1.0) {
String action = predictions.get(0).name;
if ("action_add".equals(action)) {
Toast.makeText(this, "Adding a contact", Toast.LENGTH_SHORT).show();
} else if ("action_delete".equals(action)) {
Toast.makeText(this, "Removing a contact", Toast.LENGTH_SHORT).show();
//How to get the specific position in the list to remove the contact on which the gesture event took place?
} else if ("action_refresh".equals(action)) {
Toast.makeText(this, "Reloading contacts", Toast.LENGTH_SHORT).show();
}
}
}
}
}