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| java.lang.Object | |
| ↳ | android.graphics.NinePatch |
The NinePatch class permits drawing a bitmap in nine or more sections. Essentially, it allows the creation of custom graphics that will scale the way that you define, when content added within the image exceeds the normal bounds of the graphic. For a thorough explanation of a NinePatch image, read the discussion in the 2D Graphics document.
The Draw 9-Patch tool offers an extremely handy way to create your NinePatch images, using a WYSIWYG graphics editor.
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Create a drawable projection from a bitmap to nine patches.
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Create a drawable projection from a bitmap to nine patches.
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| Public Methods | |||||||||||
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Draws the NinePatch.
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Draws the NinePatch.
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Draws the NinePatch.
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Returns the bitmap used to draw this NinePatch.
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Return the underlying bitmap's density, as per
Bitmap.getDensity(). | |||||||||||
Returns the intrinsic height, in pixels, of this NinePatch.
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Returns the name of this NinePatch object if one was specified
when calling the constructor.
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Returns the paint used to draw this NinePatch.
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Returns a
Region representing the parts of the NinePatch that are
completely transparent. | |||||||||||
Returns the intrinsic width, in pixels, of this NinePatch.
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Indicates whether this NinePatch contains transparent or translucent pixels.
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Verifies that the specified byte array is a valid 9-patch data chunk.
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Sets the paint to use when drawing the NinePatch.
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| Protected Methods | |||||||||||
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Invoked when the garbage collector has detected that this instance is no longer reachable.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
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Create a drawable projection from a bitmap to nine patches.
| bitmap | The bitmap describing the patches. |
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| chunk | The 9-patch data chunk describing how the underlying bitmap is split apart and drawn. |
Create a drawable projection from a bitmap to nine patches.
| bitmap | The bitmap describing the patches. |
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| chunk | The 9-patch data chunk describing how the underlying bitmap is split apart and drawn. |
| srcName | The name of the source for the bitmap. Might be null. |
Draws the NinePatch. This method will use the paint returned by getPaint().
| canvas | A container for the current matrix and clip used to draw the NinePatch. |
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| location | Where to draw the NinePatch. |
Draws the NinePatch. This method will use the paint returned by getPaint().
| canvas | A container for the current matrix and clip used to draw the NinePatch. |
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| location | Where to draw the NinePatch. |
Draws the NinePatch. This method will ignore the paint returned
by getPaint() and use the specified paint instead.
| canvas | A container for the current matrix and clip used to draw the NinePatch. |
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| location | Where to draw the NinePatch. |
| paint | The Paint to draw through. |
Return the underlying bitmap's density, as per
Bitmap.getDensity().
Returns the intrinsic height, in pixels, of this NinePatch. This is equivalent
to querying the height of the underlying bitmap returned by getBitmap().
Returns the name of this NinePatch object if one was specified when calling the constructor.
Returns the paint used to draw this NinePatch. The paint can be null.
Returns the intrinsic width, in pixels, of this NinePatch. This is equivalent
to querying the width of the underlying bitmap returned by getBitmap().
Indicates whether this NinePatch contains transparent or translucent pixels.
This is equivalent to calling getBitmap().hasAlpha() on this
NinePatch.
Verifies that the specified byte array is a valid 9-patch data chunk.
| chunk | A byte array representing a 9-patch data chunk. |
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Sets the paint to use when drawing the NinePatch.
| p | The paint that will be used to draw this NinePatch. |
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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.
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