But it still error application requires INJECT_EVENTS permission

Question

I follow : Android INJECT_EVENTS permission and Permission: INJECT_EVENTS for Instrumenation to other apps

1.I have done root my phone success.

2.I have done follow sign application APK and copy app.apk to system/app and set permission app.apk to rw-r--r-- by app root explorer

3.I add <uses-permission android:name="android.permission.INJECT_EVENTS" /> in Androidmanifest.xml

but It still error require inject permissoin. I don't know why?

    06-06 21:23:31.815: E/OpenCV::camera(21812): calling (*pGetPropertyC)(0x7bde06c8, 3)
06-06 21:23:32.058: E/AndroidRuntime(21812): FATAL EXCEPTION: Thread-1881
06-06 21:23:32.058: E/AndroidRuntime(21812): Process: com.example.handtracking, PID: 21812
06-06 21:23:32.058: E/AndroidRuntime(21812): java.lang.SecurityException: Injecting to another application requires INJECT_EVENTS permission
06-06 21:23:32.058: E/AndroidRuntime(21812):    at android.os.Parcel.readException(Parcel.java:1472)
06-06 21:23:32.058: E/AndroidRuntime(21812):    at android.os.Parcel.readException(Parcel.java:1426)
06-06 21:23:32.058: E/AndroidRuntime(21812):    at android.hardware.input.IInputManager$Stub$Proxy.injectInputEvent(IInputManager.java:356)
06-06 21:23:32.058: E/AndroidRuntime(21812):    at android.hardware.input.InputManager.injectInputEvent(InputManager.java:642)
06-06 21:23:32.058: E/AndroidRuntime(21812):    at android.app.Instrumentation.sendPointerSync(Instrumentation.java:937)
06-06 21:23:32.058: E/AndroidRuntime(21812):    at com.example.handtracking.CameraService$CameraWorker$2.run(CameraService.java:293)
06-06 21:23:32.274: E/Surface(240): queueBuffer: error queuing buffer to SurfaceTexture, -32
06-06 21:23:32.276: E/MtkCam/DisplayClient(240): (22102)[enquePrvOps] mpStreamOps->enqueue_buffer failed: status[Broken pipe(32)], rpImgBuf(0xb7381fb8,0xaeeb1000) (enquePrvOps){#369:mediatek/hardware/mtkcam/v1/client/DisplayClient/DisplayClient.Stream.cpp}
06-06 21:23:32.406: E/Sensors(785): handleToDriver handle(0)
06-06 21:23:32.406: E/Sensors(785): handleToDriver handle(0)
06-06 21:23:32.409: E/Sensors(785): new setDelay handle(0),ns(1000000)m, error(0), index(1)
06-06 21:23:32.409: E/Accel(785): ACC batch: handle:0, en:0, maxBatchReportLatencyNs:0 
06-06 21:23:32.409: E/Sensors(785): sensor 0 go to common batch
06-06 21:23:32.480: E/Sensors(785): handleToDriver handle(0)
06-06 21:23:32.480: E/Sensors(785): handleToDriver handle(0)
06-06 21:23:32.483: E/Sensors(785): new setDelay handle(0),ns(1000000)m, error(0), index(1)
06-06 21:23:32.483: E/Accel(785): ACC batch: handle:0, en:0, maxBatchReportLatencyNs:0 
06-06 21:23:32.483: E/Sensors(785): sensor 0 go to common batch
06-06 21:23:32.743: E/PROXIMITY(785): ProximitySensor: unknown event (type=3, code=0)
06-06 21:23:32.843: E/PROXIMITY(785): ProximitySensor: unknown event (type=3, code=0)
06-06 21:23:33.543: E/PROXIMITY(785): ProximitySensor: unknown event (type=3, code=0)

Code Inject event

thread_touch = new Thread(){
                       @Override
                       public void run(){
                               Instrumentation m_Instrumentation = new Instrumentation();

                               m_Instrumentation.sendPointerSync(MotionEvent.obtain(
                                       SystemClock.uptimeMillis(),
                                       SystemClock.uptimeMillis(),
                                       MotionEvent.ACTION_DOWN,x, y, 0));
                               m_Instrumentation.sendPointerSync(MotionEvent.obtain(
                                       SystemClock.uptimeMillis(),
                                       SystemClock.uptimeMillis(),
                                       MotionEvent.ACTION_UP,x,y, 0));
                       }
                   };
                   thread_touch.start();

My phone is Lenovo P70 android 4.4.4

Marcin Orlowski · Accepted Answer · 2015-07-01T11:30:24.647

1

This permission is granted to system apps. 3rd party cannot have it. Unless you sign your app with system certificate, you will not be granted INJECT_EVENTS permission.

Docs here read:

Allows an application to inject user events (keys, touch, trackball) into the event stream and deliver them to ANY window. Without this permission, you can only deliver events to windows in your own process.

Not for use by third-party applications.

edited Jul 01 '15 at 11:30

answered Jun 15 '15 at 09:27

Marcin Orlowski

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How to sign my app with system certificate? Can you give me link . – PichetNart Jun 15 '15 at 09:35
As with any other. But you have to have system certificate first and this is not a public thing. – Marcin Orlowski Jun 15 '15 at 09:37
How can I to have system certificate in my app? – PichetNart Jun 15 '15 at 09:50
This is something I would like to know as well, do even CyanogenMod sources provide a system certificate file or is it behind the original developers? – Whome Jun 27 '15 at 10:56
You cannot have system certificate unless you are building whole system image yourself and which means you need to create own certificate to become system one. . – Marcin Orlowski Jun 27 '15 at 13:07
I have own system.img from my phone. Can I change my app and system.img to Compatibility. – PichetNart Jul 24 '15 at 03:41

But it still error application requires INJECT_EVENTS permission

1 Answers1