1 @SuppressWarnings("unchecked")
2 public <T extends Fragment> T getFragment(int id) {
3 T result = (T)getFragmentManager().findFragmentById(id);
4 if (result == null) {
5 throw new IllegalArgumentException("fragment 0x" + Integer.toHexString(id)
6 + " doesn't exist");
7 }
8 return result;
9 }
10
11 /**
12 * Convenient version of {@link #findViewById(int)}, which throws
13 * an exception if the view doesn't exist.
14 */
15 @SuppressWarnings("unchecked")
16 public <T extends View> T getView(int id) {
17 T result = (T)findViewById(id);
18 if (result == null) {
19 throw new IllegalArgumentException("view 0x" + Integer.toHexString(id)
20 + " doesn't exist");
21 }
22 return result;
23 }
