Android app uses system signature

Android m platform requires permissions when writing app tests using Mediarecoder to record calls up and down through Audiosource.voice_call

<android:name= "Android.permission.CAPTURE_AUDIO_OUTPUT"/>  <android:name= "Android.permission.RECORD_AUDIO"/>< android:name = "Android.permission.WRITE_EXTERNAL_STORAGE"/>   

But in requesting permission

<android:name= "Android.permission.CAPTURE_AUDIO_OUTPUT"/>

, the app will crash out

The reason is that this privilege is not open to third-party apps, and the app should be signed with the System app signature.

Solution:

Add in ①androidmanifest.xml

<xmlns:android= "http://schemas.android.com/apk/res/android"       Android:shareduserid= "Android.uid.system"      Package= " Com.thundersoft.tsrecoder ">

Pass

Android:shareduserid= "Android.uid.system"

Let the app have system permissions

② in the android.mk.

Local_certificate: = Platform

Sign the app with a system signature

Android app uses system signature