Stay organized with collections
Save and categorize content based on your preferences.
OnPreDrawListener
interface OnPreDrawListener
Known Direct Subclasses
| TextView |
A user interface element that displays text to the user.
|
|
Known Indirect Subclasses
AutoCompleteTextView, Button, CheckBox, CheckedTextView, Chronometer, CompoundButton, DigitalClock, EditText, ExtractEditText, MultiAutoCompleteTextView, RadioButton, Switch, and 2 others.
| AutoCompleteTextView |
An editable text view that shows completion suggestions automatically while the user is typing.
|
| Button |
A user interface element the user can tap or click to perform an action.
|
| CheckBox |
A checkbox is a specific type of two-states button that can be either checked or unchecked.
|
| CheckedTextView |
An extension to TextView that supports the Checkable interface and displays.
|
| Chronometer |
Class that implements a simple timer.
|
| CompoundButton |
A button with two states, checked and unchecked.
|
| DigitalClock |
Like AnalogClock, but digital.
|
| EditText |
A user interface element for entering and modifying text.
|
| ExtractEditText |
* Specialization of EditText for showing and interacting with the extracted text in a full-screen input method.
|
| MultiAutoCompleteTextView |
An editable text view, extending AutoCompleteTextView, that can show completion suggestions for the substring of the text where the user is typing instead of necessarily for the entire thing.
|
| RadioButton |
A radio button is a two-states button that can be either checked or unchecked.
|
| Switch |
A Switch is a two-state toggle widget.
|
| TextClock |
TextClock can display the current date and/or time as a formatted string.
|
| ToggleButton |
Displays checked/unchecked states as a button with a "light" indicator and by default accompanied with the text "ON" or "OFF".
|
|
Interface definition for a callback to be invoked when the view tree is about to be drawn.
Summary
| Public methods |
| abstract Boolean |
Callback method to be invoked when the view tree is about to be drawn.
|
Public methods
onPreDraw
abstract fun onPreDraw(): Boolean
Callback method to be invoked when the view tree is about to be drawn. At this point, all views in the tree have been measured and given a frame. Clients can use this to adjust their scroll bounds or even to request a new layout before drawing occurs.
| Return |
Boolean |
Return true to proceed with the current drawing pass, or false to cancel. |
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2025-02-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[]]
