trigger android hardware event from a service

Is it possible to trigger a hard开发者_高级运维ware event from a service? At the very least, I'm hoping to emulate trackball movements and clicking events such that an active app will process them normally.

Many thanks.

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I don' think so and certainly hope not. That would be a serious security issue.

If you are just testing with JUnit etc then this is possible with the instrumentation classes.