| Binder is Android's inter-process communication mechanism. Each call to |
| `Binder.clearCallingIdentity()` should be followed by |
| `Binder.restoreCallingIdentity()` in a finally block. Otherwise the wrong Binder |
| identity may be used by subsequent code. |
| |
| For example: `java long token = Binder.clearCallingIdentity(); // Issue a Binder |
| call (may throw an Exception). someBinderInterface.makeCall(); |
| Binder.restoreCallingIdentity(token);` |
| |
| The above code should be rewritten as: `java long token = |
| Binder.clearCallingIdentity(); try { // Issue a Binder call (may throw an |
| Exception). someBinderInterface.makeCall(); } finally { |
| Binder.restoreCallingIdentity(token); }` |
