| package com.example.masterdetail; |
| |
| import android.content.Intent; |
| import android.os.Bundle; |
| import android.app.Activity; |
| |
| |
| |
| |
| /** |
| * An activity representing a list of Items. This activity |
| * has different presentations for handset and tablet-size devices. On |
| * handsets, the activity presents a list of items, which when touched, |
| * lead to a {@link ItemDetailActivity} representing |
| * item details. On tablets, the activity presents the list of items and |
| * item details side-by-side using two vertical panes. |
| * <p> |
| * The activity makes heavy use of fragments. The list of items is a |
| * {@link ItemListFragment} and the item details |
| * (if present) is a {@link ItemDetailFragment}. |
| * <p> |
| * This activity also implements the required |
| * {@link ItemListFragment.Callbacks} interface |
| * to listen for item selections. |
| */ |
| public class ItemListActivity extends Activity |
| implements ItemListFragment.Callbacks { |
| |
| /** |
| * Whether or not the activity is in two-pane mode, i.e. running on a tablet |
| * device. |
| */ |
| private boolean mTwoPane; |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| setContentView(R.layout.activity_item_list); |
| |
| if (findViewById(R.id.item_detail_container) != null) { |
| // The detail container view will be present only in the |
| // large-screen layouts (res/values-large and |
| // res/values-sw600dp). If this view is present, then the |
| // activity should be in two-pane mode. |
| mTwoPane = true; |
| |
| // In two-pane mode, list items should be given the |
| // 'activated' state when touched. |
| ((ItemListFragment) getFragmentManager() |
| .findFragmentById(R.id.item_list)) |
| .setActivateOnItemClick(true); |
| } |
| |
| // TODO: If exposing deep links into your app, handle intents here. |
| } |
| |
| /** |
| * Callback method from {@link ItemListFragment.Callbacks} |
| * indicating that the item with the given ID was selected. |
| */ |
| @Override |
| public void onItemSelected(String id) { |
| if (mTwoPane) { |
| // In two-pane mode, show the detail view in this activity by |
| // adding or replacing the detail fragment using a |
| // fragment transaction. |
| Bundle arguments = new Bundle(); |
| arguments.putString(ItemDetailFragment.ARG_ITEM_ID, id); |
| ItemDetailFragment fragment = new ItemDetailFragment(); |
| fragment.setArguments(arguments); |
| getFragmentManager().beginTransaction() |
| .replace(R.id.item_detail_container, fragment) |
| .commit(); |
| |
| } else { |
| // In single-pane mode, simply start the detail activity |
| // for the selected item ID. |
| Intent detailIntent = new Intent(this, ItemDetailActivity.class); |
| detailIntent.putExtra(ItemDetailFragment.ARG_ITEM_ID, id); |
| startActivity(detailIntent); |
| } |
| } |
| } |