Android is no system source code, how to call to send DTMF, namely SendDtmf?

Android is no system source code, how to call to send DTMF, namely SendDtmf?
Some say the call ril.java in SendDtmf, I have no system source code, how to call?
Is their use Eclipse to write an application.<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
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Need to write jni call the bottom, you can use sendDTMF
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cited a floor birdsaction reply:

need to write jni call the bottom, you can use sendDTMF

How to write that way, to be specific.
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The reply was deleted at the moderator 2012-01-07 22:42:30

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How home Xia shadow of an excuse to call Native sendDTMF
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references, 4th Floor oexpress reply:

how home Xia shadow of an excuse to call Native sendDTMF

Code? Can get some over? How to adjust specific point.
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http://www.google.com/codesearch/p?hl=en # cZwlSNS7aEw/frameworks/base/telephony/java/com/android/internal/telephony/Phone.java & q = Phone & exact_package = android & type = cs & l = 830

frameworks / base / telephony / java / com / android / internal / telephony / Phone.java have sendDtmf. But the internal directory is located, so the interface is not included in the SDK, third-party applications can not be invoked.
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reference to the 6th floor izeiming reply:

http://www.google.com/codesearch/p?hl=en # cZwlSNS7aEw/frameworks/base/telephony / java / com / android / internal / telephony / Phone.java & q = Phone & exact_package = android & type = cs & l = 830

frameworks / ......

I said, no source code, Java reflection can get? How to do?
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APK instead sent in a broadcast, then send DTMF telephone system should be able to program it
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Has been resolved, but changed the system source code, is not a good way, if it does not change the system source code can fix it
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Landlord can share with you
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Compare the landlord Oh, study came out, the answer to share ah
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I am also doing this! In school, graduation need this, hope the landlord wing. I QQ: 15953505
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reference to the 10th floor Mayjak reply:

landlord can share with you

reference to the 11th floor liuruiyan02 reply:

comparing the landlord Oh, study came out, the answer to share ah

reference to the 12th floor cyf2012124040 reply:

I am also doing this! In school, graduation need this, hope the landlord wing. I QQ: 15953505

What did not find a good way, I was the source of the phone.apk processDtmf function to a public type, and then add in inCallScreen a radio receiver, the receiver sends the application to broadcast after the call processDtmf, application to be sent DTMF to look at news on the radio on the line
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processDtmf this function where are you? Phone.java there is no way?
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Hello Dear Landlord, android send DTMF, seeking to share. Buttoned: 644953556
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reference to the 9th floor llxxhm reply:

been resolved, but changed the system source code, which is not a good way, if it does not change the system source code can fix it

The landlord Hello, changed the system source code, and that someone else's cell phone how to install ah? If you just modify the phone's source code, there are installation problems ah, seeking exchanges, seeking advice. Buttoned: 644,953,556