| java.lang.Object | |
| ↳ | android.databinding.ViewDataBinding |
Base class for generated data binding classes. If possible, the generated binding should
be instantiated using one of its generated static bind or inflate methods. If the specific
binding is unknown, bind(View) or
inflate(LayoutInflater, int, ViewGroup, boolean) should be used.
| Public Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Add a listener to be called when reevaluating dirty fields.
| |||||||||||
Evaluates the pending bindings, updating any Views that have expressions bound to
modified variables.
| |||||||||||
Returns the outermost View in the layout file associated with the Binding.
| |||||||||||
Returns whether the UI needs to be refresh to represent the current data.
| |||||||||||
Invalidates all binding expressions and requests a new rebind to refresh UI.
| |||||||||||
Removes a listener that was added in
addOnRebindCallback(OnRebindCallback).
| |||||||||||
Set a value value in the Binding class.
| |||||||||||
Removes binding listeners to expression variables.
| |||||||||||
| Protected Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Invoked when the garbage collector has detected that this instance is no longer reachable.
| |||||||||||
|
[Expand]
Inherited Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
From class
java.lang.Object
| |||||||||||
Add a listener to be called when reevaluating dirty fields. This also allows automatic
updates to be halted, but does not stop explicit calls to executePendingBindings().
| listener | The listener to add. |
|---|
Evaluates the pending bindings, updating any Views that have expressions bound to modified variables. This must be run on the UI thread.
Returns the outermost View in the layout file associated with the Binding. If this binding is for a merge layout file, this will return the first root in the merge tag.
Returns whether the UI needs to be refresh to represent the current data.
Invalidates all binding expressions and requests a new rebind to refresh UI.
Removes a listener that was added in addOnRebindCallback(OnRebindCallback).
| listener | The listener to remove. |
|---|
Set a value value in the Binding class.
Typically, the developer will be able to call the subclass's set method directly. For
example, if there is a variable x in the Binding, a setX method
will be generated. However, there are times when the specific subclass of ViewDataBinding
is unknown, so the generated method cannot be discovered without reflection. The
setVariable call allows the values of variables to be set without reflection.
| variableId | the BR id of the variable to be set. For example, if the variable is
x, then variableId will be BR.x. |
|---|---|
| value | The new value of the variable to be set. |
Developers
true if the variable exists in the binding or false
otherwise.
Removes binding listeners to expression variables.
Invoked when the garbage collector has detected that this instance is no longer reachable. The default implementation does nothing, but this method can be overridden to free resources.
Note that objects that override finalize are significantly more expensive than
objects that don't. Finalizers may be run a long time after the object is no longer
reachable, depending on memory pressure, so it's a bad idea to rely on them for cleanup.
Note also that finalizers are run on a single VM-wide finalizer thread,
so doing blocking work in a finalizer is a bad idea. A finalizer is usually only necessary
for a class that has a native peer and needs to call a native method to destroy that peer.
Even then, it's better to provide an explicit close method (and implement
Closeable), and insist that callers manually dispose of instances. This
works well for something like files, but less well for something like a BigInteger
where typical calling code would have to deal with lots of temporaries. Unfortunately,
code that creates lots of temporaries is the worst kind of code from the point of view of
the single finalizer thread.
If you must use finalizers, consider at least providing your own
ReferenceQueue and having your own thread process that queue.
Unlike constructors, finalizers are not automatically chained. You are responsible for
calling super.finalize() yourself.
Uncaught exceptions thrown by finalizers are ignored and do not terminate the finalizer thread. See Effective Java Item 7, "Avoid finalizers" for more.
| Throwable |
|---|