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AppCompatTextView

public class AppCompatTextView
extends TextView implements TintableBackgroundView

java.lang.Object
   ↳ android.view.View
     ↳ android.widget.TextView
       ↳ android.support.v7.widget.AppCompatTextView
Known Direct Subclasses


A TextView which supports compatible features on older versions of the platform, including:

This will automatically be used when you use TextView in your layouts and the top-level activity / dialog is provided by appcompat. You should only need to manually use this class when writing custom views.

Summary

Inherited XML attributes

From class android.widget.TextView
From class android.view.View

Inherited constants

From class android.widget.TextView
From class android.view.View

Inherited fields

From class android.view.View

Public constructors

AppCompatTextView(Context context)
AppCompatTextView(Context context, AttributeSet attrs)
AppCompatTextView(Context context, AttributeSet attrs, int defStyleAttr)

Public methods

void setBackgroundDrawable(Drawable background)

This method is deprecated. use setBackground(Drawable) instead

void setBackgroundResource(int resId)

Set the background to a given resource.

void setTextAppearance(Context context, int resId)

This method is deprecated. Use setTextAppearance(int) instead.

void setTextSize(int unit, float size)

Set the default text size to a given unit and value.

Protected methods

void drawableStateChanged()

This function is called whenever the state of the view changes in such a way that it impacts the state of drawables being shown.

void onLayout(boolean changed, int left, int top, int right, int bottom)

Called from layout when this view should assign a size and position to each of its children.

void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter)

This method is called when the text is changed, in case any subclasses would like to know.

Inherited methods

From class android.widget.TextView
From class android.view.View
From class java.lang.Object
From interface android.view.ViewTreeObserver.OnPreDrawListener
From interface android.graphics.drawable.Drawable.Callback
From interface android.view.KeyEvent.Callback
From interface android.view.accessibility.AccessibilityEventSource
From interface android.support.v4.view.TintableBackgroundView

Public constructors

AppCompatTextView

added in version 24.2.0
AppCompatTextView (Context context)

Parameters
context Context

AppCompatTextView

added in version 24.2.0
AppCompatTextView (Context context, 
                AttributeSet attrs)

Parameters
context Context

attrs AttributeSet

AppCompatTextView

added in version 24.2.0
AppCompatTextView (Context context, 
                AttributeSet attrs, 
                int defStyleAttr)

Parameters
context Context

attrs AttributeSet

defStyleAttr int

Public methods

setBackgroundDrawable

added in version 26.0.0
void setBackgroundDrawable (Drawable background)

This method is deprecated.
use setBackground(Drawable) instead

Parameters
background Drawable

setBackgroundResource

void setBackgroundResource (int resId)

Set the background to a given resource. The resource should refer to a Drawable object or 0 to remove the background.

Parameters
resId int: The identifier of the resource.

setTextAppearance

added in version 26.0.0
void setTextAppearance (Context context, 
                int resId)

This method is deprecated.
Use setTextAppearance(int) instead.

Sets the text color, size, style, hint color, and highlight color from the specified TextAppearance resource.

Parameters
context Context

resId int

setTextSize

void setTextSize (int unit, 
                float size)

Set the default text size to a given unit and value. See TypedValue for the possible dimension units.

Note: if this TextView has the auto-size feature enabled than this function is no-op.

Parameters
unit int: The desired dimension unit.

size float: The desired size in the given units.

Protected methods

drawableStateChanged

void drawableStateChanged ()

This function is called whenever the state of the view changes in such a way that it impacts the state of drawables being shown.

If the View has a StateListAnimator, it will also be called to run necessary state change animations.

Be sure to call through to the superclass when overriding this function.

onLayout

void onLayout (boolean changed, 
                int left, 
                int top, 
                int right, 
                int bottom)

Called from layout when this view should assign a size and position to each of its children. Derived classes with children should override this method and call layout on each of their children.

Parameters
changed boolean: This is a new size or position for this view

left int: Left position, relative to parent

top int: Top position, relative to parent

right int: Right position, relative to parent

bottom int: Bottom position, relative to parent

onTextChanged

void onTextChanged (CharSequence text, 
                int start, 
                int lengthBefore, 
                int lengthAfter)

This method is called when the text is changed, in case any subclasses would like to know. Within text, the lengthAfter characters beginning at start have just replaced old text that had length lengthBefore. It is an error to attempt to make changes to text from this callback.

Parameters
text CharSequence: The text the TextView is displaying

start int: The offset of the start of the range of the text that was modified

lengthBefore int: The length of the former text that has been replaced

lengthAfter int: The length of the replacement modified text

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