(Preview)
| Package | mx.core |
| Class | public class RuntimeDPIProvider |
| Inheritance | RuntimeDPIProvider  Object |
| Language Version: | ActionScript 3.0 |
| Product Version: | Flex 4.5 |
| Runtime Versions: | Flash Player 10, AIR 2.5 |
Overriding Flex's default mappings is usually only necessary for devices that incorrectly report their screenDPI and for devices that may scale better in a different DPI class.
Flex's default mappings are:
| 160 DPI | <200 DPI |
| 240 DPI | >=200 DPI and <280 DPI |
| 320 DPI | >=280 DPI |
Subclasses of RuntimeDPIProvider should only depend on runtime APIs
and should not depend on any classes specific to the Flex framework except
mx.core.DPIClassification.
More examples
Related API Elements
Public Properties
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Show Inherited Public Properties| Property | Defined By | ||
|---|---|---|---|
 | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object | |
Public Methods
| Method | Defined By | ||
|---|---|---|---|
|
Indicates whether an object has a specified property defined. | Object | |
|
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
|
Indicates whether the specified property exists and is enumerable. | Object | |
|
Sets the availability of a dynamic property for loop operations. | Object | |
|
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
|
Returns the string representation of the specified object. | Object | |
|
Returns the primitive value of the specified object. | Object | |
Property Detail
Constructor Detail
Examples How to use this example
RuntimeDPIProviderApp.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:ViewNavigatorApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
firstView="views.RuntimeDPIProviderAppView"
applicationDPI="160" runtimeDPIProvider="RuntimeDPIProviderExample" >
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
</s:ViewNavigatorApplication>
RuntimeDPIProviderExample.as
package
{
import flash.system.Capabilities;
import mx.core.DPIClassification;
import mx.core.RuntimeDPIProvider;
public class RuntimeDPIProviderExample extends RuntimeDPIProvider
{
public function RuntimeDPIProviderExample()
{
}
override public function get runtimeDPI():Number
{
// A tablet reporting an incorrect DPI of 240.
if (Capabilities.screenDPI == 240 &&
Capabilities.screenResolutionX == 600 &&
Capabilities.screenResolutionY == 1024)
{
return DPIClassification.DPI_160;
}
return super.runtimeDPI;
}
}
}
RuntimeDPIProviderAppView.mxml
Wed Nov 21 2018, 06:34 AM -08:00