What is the proper way to IIORegistry.registerServiceProvider
已回答
I want to register a ImageReaderSpi. Here is my code. I must set preload="true". But IDE said I cannot use this outside IntelliJ.
```xml
<extensions defaultExtensionNs="com.intellij">
<fileType name="Image" extensions="qoi"/>
<applicationService serviceImplementation="io.github.xiaozhuai.jetbrains.qoi.QOIMetadataRegistrar" preload="true"/>
</extensions>
```
```java
package io.github.xiaozhuai.jetbrains.qoi;
import javax.imageio.spi.IIORegistry;
import javax.imageio.spi.ImageReaderSpi;
import javax.imageio.spi.ImageWriterSpi;
public class QOIMetadataRegistrar {
public QOIMetadataRegistrar() {
ensureQoiRegistered();
}
public static void ensureQoiRegistered() {
IIORegistry defaultInstance = IIORegistry.getDefaultInstance();
defaultInstance.registerServiceProvider(new QOIImageReaderSpi(), ImageReaderSpi.class);
defaultInstance.registerServiceProvider(new QOIImageWriterSpi(), ImageWriterSpi.class);
}
}
```
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Hi,
Please consider delaying loading these classes until the first usage. This is the recommended approach.
If you still want to load it as soon as possible, consider using PreloadingActivity:
https://upsource.jetbrains.com/idea-ce/file/idea-ce-6ed4281aa53e1672d2e5870243c6606bb48afc84/platform/ide-core/src/com/intellij/openapi/application/PreloadingActivity.java
Thanks for your suggestion! I succeed using PreloadingActivity with require-restart="true"