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Questions tagged [android-binder]

Android's lightweight remote procedure call mechanism designed for high performance when performing in-process and cross-process calls.

While the term "binder" is somewhat generic, its most popular namesake is the Android-specific interprocess communication mechanism and remote method invocation system. It forms the basis for many of Android's core services.

The official documentation is here, and there is a collection of in-depth information at this wiki.

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Android: secure IPC alternative to AIDL?

What I'm trying to do: implement lightweight, secure IPC protocol between two applications installed on the device. Client app should be able to send commands and queries to Service running in a service app, and receive back results of…
Vasiliy
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Understanding and implementing native Binders in android using C++

I want to implement a simple IPC mechanism using Binders in android. For that, I searched on the Internet and found this. I compiled it and it runs fine on my Android device. I tried to take an overall understanding of the program, by searching for…
Naveen
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what does it mean when uid equals to zero for Android system

In the NotificationManagerService.java from Android 5.0 framework source code. I don't understand when the uid will be zero. private static boolean isUidSystem(int uid) { final int appid = UserHandle.getAppId(uid); return (appid ==…
shanwu
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C++ Binder without addService()

Is it possible to use C++ Binder API to communicate between two non-privileged processes? All examples I found (e.g. https://github.com/mcr/Android-HelloWorldService) rely on registering service via ServiceManager->addService() which throws…
Iwo Banas
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Android IPC and service_manager

Does all Android IPC is pass through the service_manager? How does applications interacts with services and intents? Does all messages passed through the service_manager as a proxy? or applications can "talk" directly?
omri-c
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Android NDK: Inter-process transfers of AHardwareBuffer via Binder

I am writing a C++ library to allow two Android applications to communicate and exchange data. The server-side appication is pure C++ too, with a small amount of Java to create a service/activity. Some of the shared data is best managed by…
Pesho_T
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android binder driver

I am trying to read Android source code to learn about binder, but I am not able to find the part of binder driver as described in the Android system architecture. Any idea where the binder code resides in Android source?
thisEric
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How the same code is shared between two processes in Android?

I've a util class in my android project and it looks something like this, public class MyUtil { public static final String TAG = "tim"; static IBinder mIBinder1 = new Binder(); public static void printHelloWorld() { Log.i(TAG,…
Tom Taylor
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Camera service binder died after zooming

I'm capturing a large Bitmap after zooming on TextureView and I get this error after several shot only on some devices and nothing found about this on the web : 2019-12-29 19:27:37.940 3687-26031/? E/CameraService: binderDied: Java client's binder…
nicover
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Android communicating from Service to Clients

I'd like to keep a reference to each client that binds to a started & bound Android service. My service is NOT in a separate process. I can have multiple clients bound, e.g. - 1 Activity and 2 Fragments. They may all be interested in a combination…
Sofia Clover
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compare android binder's performance with unix-socket

I write a IPC framework using domain socket and protobuf. I compared binder with my IPC Framework in my x86 ubuntu and anbox on it. when data size between 8 byte ~ 4K, the performance has no difference.when data size large than 32K, My IPC…
rockycai
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How to provide RPC interface in an Android system service?

I'm developing a (native) service process whose executable resides on the system partition on Android 8.1/9.0. Let's call the process S. S is supposed to provide RPC service to a process V whose executable resides on the vendor partition. I read…
Julian Zhang
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Binder transaction failing in android

Possible Duplicate: Failed Binder Transaction when returning camera image What are the chances of binder transaction failing in android stack? I have an application which switches thru different activities, but the size of data being exchanged…
aTJ
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Does an Android process without IPC have a Binder thread-pool by default?

I know that Binder threads are used for IPC and by High-level mechanisms such as Intents. But what if an app doesn't use IPC, Intents or any form of Binder-usage, then does it still have a Binder thread-pool by default on creation of the process? In…
Matt
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Instant App crash using WiFi

My instant app crash when i run script “WifiManager.isWifiEnable” Caused by: java.lang.SecurityException: Method class android.net.wifi.IWifiManager$Stub$Proxy.getWifiEnabledState[] not available to instant apps …
Wang Yixiong
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