public
abstract
class
AppCompatDelegate
extends Object
java.lang.Object | |
↳ | android.support.v7.app.AppCompatDelegate |
This class represents a delegate which you can use to extend AppCompat's support to any
Activity
.
When using an AppCompatDelegate
, you should any methods exposed in it rather than the
Activity
method of the same name. This applies to:
addContentView(android.view.View, android.view.ViewGroup.LayoutParams)
setContentView(int)
setContentView(android.view.View)
setContentView(android.view.View, android.view.ViewGroup.LayoutParams)
requestWindowFeature(int)
invalidateOptionsMenu()
startSupportActionMode(android.support.v7.view.ActionMode.Callback)
setSupportActionBar(android.support.v7.widget.Toolbar)
getSupportActionBar()
getMenuInflater()
onCreate(android.os.Bundle)
onPostCreate(android.os.Bundle)
onConfigurationChanged(android.content.res.Configuration)
setTitle(CharSequence)
onStop()
onDestroy()
An Activity
can only be linked with one AppCompatDelegate
instance,
so the instance returned from create(Activity, AppCompatCallback)
should be kept
until the Activity is destroyed.
Constants | |
---|---|
int |
FEATURE_ACTION_MODE_OVERLAY
Flag for specifying the behavior of action modes when an Action Bar is not present. |
int |
FEATURE_SUPPORT_ACTION_BAR
Flag for enabling the support Action Bar. |
int |
FEATURE_SUPPORT_ACTION_BAR_OVERLAY
Flag for requesting an support Action Bar that overlays window content. |
int |
MODE_NIGHT_AUTO
Mode which means to use night mode when it is determined that it is night or not. |
int |
MODE_NIGHT_FOLLOW_SYSTEM
Mode which uses the system's night mode setting to determine if it is night or not. |
int |
MODE_NIGHT_NO
Mode which means to not use night mode, and therefore prefer |
int |
MODE_NIGHT_YES
Mode which means to always use night mode, and therefore prefer |
Public methods | |
---|---|
abstract
void
|
addContentView(View v, ViewGroup.LayoutParams lp)
Should be called instead of
|
abstract
boolean
|
applyDayNight()
Allow AppCompat to apply the |
static
AppCompatDelegate
|
create(Dialog dialog, AppCompatCallback callback)
Create a |
static
AppCompatDelegate
|
create(Activity activity, AppCompatCallback callback)
Create a |
abstract
View
|
createView(View parent, String name, Context context, AttributeSet attrs)
This should be called from a
|
abstract
View
|
findViewById(int id)
Finds a view that was identified by the id attribute from the XML that
was processed in |
static
int
|
getDefaultNightMode()
Returns the default night mode. |
abstract
ActionBarDrawerToggle.Delegate
|
getDrawerToggleDelegate()
Returns an |
abstract
MenuInflater
|
getMenuInflater()
Return the value of this call from your |
abstract
ActionBar
|
getSupportActionBar()
Support library version of |
abstract
boolean
|
hasWindowFeature(int featureId)
Query for the availability of a certain feature. |
abstract
void
|
installViewFactory()
Installs AppCompat's |
abstract
void
|
invalidateOptionsMenu()
Should be called from |
static
boolean
|
isCompatVectorFromResourcesEnabled()
Returns whether vector drawables on older platforms (< API 21) can be accessed from within resources. |
abstract
boolean
|
isHandleNativeActionModesEnabled()
Returns whether AppCompat handles any native action modes itself. |
abstract
void
|
onConfigurationChanged(Configuration newConfig)
Should be called from
|
abstract
void
|
onCreate(Bundle savedInstanceState)
Should be called from |
abstract
void
|
onDestroy()
Should be called from |
abstract
void
|
onPostCreate(Bundle savedInstanceState)
Should be called from |
abstract
void
|
onPostResume()
Should be called from |
abstract
void
|
onSaveInstanceState(Bundle outState)
Allows AppCompat to save instance state. |
abstract
void
|
onStop()
Should be called from |
abstract
boolean
|
requestWindowFeature(int featureId)
Enable extended window features. |
static
void
|
setCompatVectorFromResourcesEnabled(boolean enabled)
Sets whether vector drawables on older platforms (< API 21) can be used within
|
abstract
void
|
setContentView(View v)
Should be called instead of |
abstract
void
|
setContentView(int resId)
Should be called instead of |
abstract
void
|
setContentView(View v, ViewGroup.LayoutParams lp)
Should be called instead of
|
static
void
|
setDefaultNightMode(int mode)
Sets the default night mode. |
abstract
void
|
setHandleNativeActionModesEnabled(boolean enabled)
Whether AppCompat handles any native action modes itself. |
abstract
void
|
setLocalNightMode(int mode)
Override the night mode used for this delegate's host component. |
abstract
void
|
setSupportActionBar(Toolbar toolbar)
|
abstract
void
|
setTitle(CharSequence title)
Should be called from |
abstract
ActionMode
|
startSupportActionMode(ActionMode.Callback callback)
Start an action mode. |
Inherited methods | |
---|---|
From
class
java.lang.Object
|
int FEATURE_ACTION_MODE_OVERLAY
Flag for specifying the behavior of action modes when an Action Bar is not present. If overlay is enabled, the action mode UI will be allowed to cover existing window content.
Constant Value: 10 (0x0000000a)
int FEATURE_SUPPORT_ACTION_BAR
Flag for enabling the support Action Bar.
This is enabled by default for some devices. The Action Bar replaces the title bar and provides an alternate location for an on-screen menu button on some devices.
Constant Value: 108 (0x0000006c)
int FEATURE_SUPPORT_ACTION_BAR_OVERLAY
Flag for requesting an support Action Bar that overlays window content.
Normally an Action Bar will sit in the space above window content, but if this
feature is requested along with FEATURE_SUPPORT_ACTION_BAR
it will be layered over
the window content itself. This is useful if you would like your app to have more control
over how the Action Bar is displayed, such as letting application content scroll beneath
an Action Bar with a transparent background or otherwise displaying a transparent/translucent
Action Bar over application content.
This mode is especially useful with View.SYSTEM_UI_FLAG_FULLSCREEN
, which allows
you to seamlessly hide the action bar in conjunction with other screen decorations.
When an ActionBar is in this mode it will adjust the insets provided to
View.fitSystemWindows(Rect)
to include the content covered by the action bar, so you can do layout within
that space.
Constant Value: 109 (0x0000006d)
int MODE_NIGHT_AUTO
Mode which means to use night mode when it is determined that it is night or not.
The calculation used to determine whether it is night or not makes use of the location APIs (if this app has the necessary permissions). This allows us to generate accurate sunrise and sunset times. If this app does not have permission to access the location APIs then we use hardcoded times which will be less accurate.
See also:
Constant Value: 0 (0x00000000)
int MODE_NIGHT_FOLLOW_SYSTEM
Mode which uses the system's night mode setting to determine if it is night or not.
See also:
Constant Value: -1 (0xffffffff)
int MODE_NIGHT_NO
Mode which means to not use night mode, and therefore prefer notnight
qualified
resources where available, regardless of the time.
See also:
Constant Value: 1 (0x00000001)
int MODE_NIGHT_YES
Mode which means to always use night mode, and therefore prefer night
qualified
resources where available, regardless of the time.
See also:
Constant Value: 2 (0x00000002)
void addContentView (View v, ViewGroup.LayoutParams lp)
Should be called instead of
addContentView(android.view.View, android.view.ViewGroup.LayoutParams)
}
Parameters | |
---|---|
v |
View
|
lp |
ViewGroup.LayoutParams
|
boolean applyDayNight ()
Allow AppCompat to apply the night
and notnight
resource qualifiers.
Doing this enables the
Theme.AppCompat.DayNight
family of themes to work, using the computed twilight to automatically select a dark or
light theme.
You can override the night mode using setLocalNightMode(int)
.
This only works on devices running
ICE_CREAM_SANDWICH
and above.
Returns | |
---|---|
boolean |
true if the night mode was applied, false if not |
AppCompatDelegate create (Dialog dialog, AppCompatCallback callback)
Create a AppCompatDelegate
to use with dialog
.
Parameters | |
---|---|
dialog |
Dialog
|
callback |
AppCompatCallback :
An optional callback for AppCompat specific events
|
Returns | |
---|---|
AppCompatDelegate |
AppCompatDelegate create (Activity activity, AppCompatCallback callback)
Create a AppCompatDelegate
to use with activity
.
Parameters | |
---|---|
activity |
Activity
|
callback |
AppCompatCallback :
An optional callback for AppCompat specific events
|
Returns | |
---|---|
AppCompatDelegate |
View createView (View parent, String name, Context context, AttributeSet attrs)
This should be called from a
LayoutInflaterFactory
in order
to return tint-aware widgets.
This is only needed if you are using your own
LayoutInflater
factory, and have therefore not
installed the default factory via installViewFactory()
.
Parameters | |
---|---|
parent |
View
|
name |
String
|
context |
Context
|
attrs |
AttributeSet
|
Returns | |
---|---|
View |
View findViewById (int id)
Finds a view that was identified by the id attribute from the XML that
was processed in onCreate(Bundle)
.
Parameters | |
---|---|
id |
int
|
Returns | |
---|---|
View |
The view if found or null otherwise. |
int getDefaultNightMode ()
Returns the default night mode.
Returns | |
---|---|
int |
See also:
ActionBarDrawerToggle.Delegate getDrawerToggleDelegate ()
Returns an ActionBarDrawerToggle.Delegate
which can be returned from your Activity
if it implements ActionBarDrawerToggle.DelegateProvider
.
Returns | |
---|---|
ActionBarDrawerToggle.Delegate |
MenuInflater getMenuInflater ()
Return the value of this call from your getMenuInflater()
Returns | |
---|---|
MenuInflater |
ActionBar getSupportActionBar ()
Support library version of getActionBar()
.
Returns | |
---|---|
ActionBar |
AppCompat's action bar, or null if it does not have one. |
boolean hasWindowFeature (int featureId)
Query for the availability of a certain feature.
This should be called instead of hasFeature(int)
.
Parameters | |
---|---|
featureId |
int :
The feature ID to check |
Returns | |
---|---|
boolean |
true if the feature is enabled, false otherwise. |
void installViewFactory ()
Installs AppCompat's LayoutInflater
Factory so that it can replace
the framework widgets with compatible tinted versions. This should be called before
super.onCreate()
as so:
protected void onCreate(Bundle savedInstanceState) { getDelegate().installViewFactory(); getDelegate().onCreate(savedInstanceState); super.onCreate(savedInstanceState); // ... }If you are using your own
Factory
or
Factory2
then you can omit this call, and instead call
createView(android.view.View, String, android.content.Context, android.util.AttributeSet)
from your factory to return any compatible widgets.
void invalidateOptionsMenu ()
Should be called from invalidateOptionsMenu()
} or
supportInvalidateOptionsMenu()
.
boolean isCompatVectorFromResourcesEnabled ()
Returns whether vector drawables on older platforms (< API 21) can be accessed from within resources.
Returns | |
---|---|
boolean |
boolean isHandleNativeActionModesEnabled ()
Returns whether AppCompat handles any native action modes itself.
Returns | |
---|---|
boolean |
true if AppCompat should handle native action modes. |
void onConfigurationChanged (Configuration newConfig)
Should be called from
onConfigurationChanged(Configuration)
Parameters | |
---|---|
newConfig |
Configuration
|
void onCreate (Bundle savedInstanceState)
Should be called from Activity.onCreate()
.
This should be called before super.onCreate()
as so:
protected void onCreate(Bundle savedInstanceState) { getDelegate().onCreate(savedInstanceState); super.onCreate(savedInstanceState); // ... }
Parameters | |
---|---|
savedInstanceState |
Bundle
|
void onPostCreate (Bundle savedInstanceState)
Should be called from onPostCreate(android.os.Bundle)
Parameters | |
---|---|
savedInstanceState |
Bundle
|
void onSaveInstanceState (Bundle outState)
Allows AppCompat to save instance state.
Parameters | |
---|---|
outState |
Bundle
|
boolean requestWindowFeature (int featureId)
Enable extended window features. This should be called instead of
requestWindowFeature(int)
or
getWindow().requestFeature()
.
Parameters | |
---|---|
featureId |
int :
The desired feature as defined in Window . |
Returns | |
---|---|
boolean |
Returns true if the requested feature is supported and now enabled. |
void setCompatVectorFromResourcesEnabled (boolean enabled)
Sets whether vector drawables on older platforms (< API 21) can be used within
DrawableContainer
resources.
When enabled, AppCompat can intercept some drawable inflation from the framework, which
enables implicit inflation of vector drawables within
DrawableContainer
resources. You can then use those
drawables in places such as android:src
on ImageView
,
or android:drawableLeft
on TextView
. Example usage:
<selector xmlns:android="..."> <item android:state_checked="true" android:drawable="@drawable/vector_checked_icon" /> <item android:drawable="@drawable/vector_icon" /> </selector> <TextView ... android:drawableLeft="@drawable/vector_state_list_icon" />
This feature defaults to disabled, since enabling it can cause issues with memory usage,
and problems updating Configuration
instances. If you update the configuration
manually, then you probably do not want to enable this. You have been warned.
Even with this disabled, you can still use vector resources through
setImageResource(int)
and it's
app:srcCompat
attribute. They can also be used in anything which AppComapt inflates
for you, such as menu resources.
Please note: this only takes effect in Activities created after this call.
Parameters | |
---|---|
enabled |
boolean
|
void setContentView (View v)
Should be called instead of setContentView(android.view.View)
}
Parameters | |
---|---|
v |
View
|
void setContentView (int resId)
Should be called instead of setContentView(int)
}
Parameters | |
---|---|
resId |
int
|
void setContentView (View v, ViewGroup.LayoutParams lp)
Should be called instead of
setContentView(android.view.View, android.view.ViewGroup.LayoutParams)
}
Parameters | |
---|---|
v |
View
|
lp |
ViewGroup.LayoutParams
|
void setDefaultNightMode (int mode)
Sets the default night mode. This is used across all activities/dialogs but can be overriden
locally via setLocalNightMode(int)
.
This method only takes effect for those situtations where applyDayNight()
works.
Defaults to MODE_NIGHT_NO
.
Parameters | |
---|---|
mode |
int
|
void setHandleNativeActionModesEnabled (boolean enabled)
Whether AppCompat handles any native action modes itself.
This methods only takes effect on
ICE_CREAM_SANDWICH
and above.
Parameters | |
---|---|
enabled |
boolean :
whether AppCompat should handle native action modes.
|
void setLocalNightMode (int mode)
Override the night mode used for this delegate's host component. This method only takes
effect for those situtations where applyDayNight()
works.
Depending on when this is called, this may not take effect until the next time that
the host component is created. You may use recreate()
to force a
recreation.
Parameters | |
---|---|
mode |
int
|
See also:
void setSupportActionBar (Toolbar toolbar)
Set a Toolbar
to act as the ActionBar
for this delegate.
When set to a non-null value the getSupportActionBar()
()} method will return
an ActionBar
object that can be used to control the given toolbar as if it were
a traditional window decor action bar. The toolbar's menu will be populated with the
Activity's options menu and the navigation button will be wired through the standard
home
menu select action.
In order to use a Toolbar within the Activity's window content the application
must not request the window feature
FEATURE_SUPPORT_ACTION_BAR
.
Parameters | |
---|---|
toolbar |
Toolbar :
Toolbar to set as the Activity's action bar, or null to clear it
|
void setTitle (CharSequence title)
Should be called from onTitleChanged(CharSequence, int)
}
Parameters | |
---|---|
title |
CharSequence
|
ActionMode startSupportActionMode (ActionMode.Callback callback)
Start an action mode.
Parameters | |
---|---|
callback |
ActionMode.Callback :
Callback that will manage lifecycle events for this context mode |
Returns | |
---|---|
ActionMode |
The ContextMode that was started, or null if it was canceled |