Package icyllis.modernui.core

Class Context

java.lang.Object

icyllis.modernui.core.Context

Direct Known Subclasses:

Activity, ContextWrapper

public abstract class Context
extends Object

Interface for obtaining global information about the application environment. This is an abstract class whose implementation is provided by the framework. It allows access to application-specific resources and classes, as well as up-calls for application-level operations such as launching activities, etc.

Note: Unless otherwise specified, all Context objects are thread-safe by simply publishing them safely.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	WINDOW_SERVICE	Use with getSystemService(String) to retrieve a WindowManager for accessing the system's window manager.

Constructor Summary

Constructors

Constructor	Description
Context()

Method Summary

Modifier and Type	Method	Description
abstract Resources	getResources()	Returns a Resources instance for the application's environment.
abstract Object	getSystemService(String name)
abstract Resources.Theme	getTheme()	Return the Theme object associated with this Context.
final TypedArray	obtainStyledAttributes(ResourceId resId, String[] attrs)	Retrieve styled attribute information in this Context's theme.
final TypedArray	obtainStyledAttributes(AttributeSet set, ResourceId defStyleAttr, ResourceId defStyleRes, String[] attrs)	Retrieve styled attribute information in this Context's theme.
final TypedArray	obtainStyledAttributes(AttributeSet set, String[] attrs)	Retrieve styled attribute information in this Context's theme.
final TypedArray	obtainStyledAttributes(String[] attrs)	Retrieve styled attribute information in this Context's theme.
abstract void	setTheme(ResourceId resId)	Reset the base theme for this context.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

WINDOW_SERVICE

public static final String WINDOW_SERVICE

Use with getSystemService(String) to retrieve a WindowManager for accessing the system's window manager.

See Also:

• getSystemService(String)
• WindowManager
• Constant Field Values

Constructor Details

Context

public Context()

Method Details

getResources

public abstract Resources getResources()

Returns a Resources instance for the application's environment.

Note: For a Context object, the implementation of this method should always return the same Resources object, even if a resource reload occurs.

Returns:

a Resources instance for the application's environment

setTheme

public abstract void setTheme(@Nullable @StyleRes
 ResourceId resId)

Reset the base theme for this context. Note that this should be called before any views are instantiated in the Context.

Parameters:

resId - The style resource describing the theme.

getTheme

public abstract Resources.Theme getTheme()

Return the Theme object associated with this Context.

Note: For a Context object, the implementation of this method should always return the same Theme object, even if a resource reload or theme reset occurs. And the object returned by Resources.Theme.getResources() should be consistent with getResources(). Calling this method is not particularly fast, so it is recommended to cache it in a local variable.

obtainStyledAttributes

@NonNull
public final TypedArray obtainStyledAttributes(@NonNull @StyleableRes
 String[] attrs)

Retrieve styled attribute information in this Context's theme. See Resources.Theme.obtainStyledAttributes(String[]) for more information.

See Also:

• Resources.Theme.obtainStyledAttributes(String[])

obtainStyledAttributes

@NonNull
public final TypedArray obtainStyledAttributes(@Nullable @StyleRes
 ResourceId resId,
 @NonNull @StyleableRes
 String[] attrs)

Retrieve styled attribute information in this Context's theme. See Resources.Theme.obtainStyledAttributes(ResourceId, String[]) for more information.

See Also:

• Resources.Theme.obtainStyledAttributes(ResourceId, String[])

obtainStyledAttributes

@NonNull
public final TypedArray obtainStyledAttributes(@Nullable
 AttributeSet set,
 @NonNull @StyleableRes
 String[] attrs)

Retrieve styled attribute information in this Context's theme. See Resources.Theme.obtainStyledAttributes(AttributeSet, ResourceId, ResourceId, String[]) for more information.

See Also:

• Resources.Theme.obtainStyledAttributes(AttributeSet, ResourceId, ResourceId, String[])

obtainStyledAttributes

@NonNull
public final TypedArray obtainStyledAttributes(@Nullable
 AttributeSet set,
 @Nullable @AttrRes
 ResourceId defStyleAttr,
 @Nullable @StyleRes
 ResourceId defStyleRes,
 @NonNull @StyleableRes
 String[] attrs)

Retrieve styled attribute information in this Context's theme. See Resources.Theme.obtainStyledAttributes(AttributeSet, ResourceId, ResourceId, String[]) for more information.

See Also:

• Resources.Theme.obtainStyledAttributes(AttributeSet, ResourceId, ResourceId, String[])

getSystemService

@Nullable
public abstract Object getSystemService(@NonNull
 String name)