Now I am trying to build a apk which can control the device's
hardware.
When I try to mute microphone with the "AudioManager.muteMicrophone"
and "AudioSystem.muteMicrophone" methods. As a result, I can only mute
the
Microphone in my own apk, when I jump to another apk such as some
other recorder,
the microphone seem to do nothing with my setting...

But there seem to be only one way to the JNI, so I am very confuced,
is there any other solution can help me with this??

To sum up, I want to make an apk whick can mute my device's
microphone,
anybody can give me a few hints about it?

Or I can only make it by turn the driver down?

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