native

问题 I am building a React Native mobile application that is using a Laravel backend, currently running on localhost:8000. When making a fetch request from an Android device to my server, my application gets the following error logs: My code is below: export default class App extends Component { login() { fetch('http://localhost:8000/api/establishments/get') .then((response) => response.json()) .then((responseJson) => { console.log('success!'); }) .catch((error) => { console.error(error); }); }

问题 I am building a React Native mobile application that is using a Laravel backend, currently running on localhost:8000. When making a fetch request from an Android device to my server, my application gets the following error logs: My code is below: export default class App extends Component { login() { fetch('http://localhost:8000/api/establishments/get') .then((response) => response.json()) .then((responseJson) => { console.log('success!'); }) .catch((error) => { console.error(error); }); }

问题 I have an Android application that call a native shared library by jni. This shared library invokes some loadable kernel modules .ko My app run fail when jni calls the function in shared library that invokes kernel module. But when I write an executable using this shared library, it works fine when call above function. I found that my app run with user name is "u0_axx" and my executable run by command line with root. So maybe it doesn't have permission to invokes kernel module. My question is

问题 I have an Android application that call a native shared library by jni. This shared library invokes some loadable kernel modules .ko My app run fail when jni calls the function in shared library that invokes kernel module. But when I write an executable using this shared library, it works fine when call above function. I found that my app run with user name is "u0_axx" and my executable run by command line with root. So maybe it doesn't have permission to invokes kernel module. My question is

问题 I have an Android application that call a native shared library by jni. This shared library invokes some loadable kernel modules .ko My app run fail when jni calls the function in shared library that invokes kernel module. But when I write an executable using this shared library, it works fine when call above function. I found that my app run with user name is "u0_axx" and my executable run by command line with root. So maybe it doesn't have permission to invokes kernel module. My question is

问题 I am writing a native plugin that, in some cases, has to call functions in the Flutter portion of the app, written in Dart. How it's achieved, is explained here: https://flutter.io/platform-channels/ Furthermore, an example of invoking a method from the native/platform part towards the Dart/non-native is here: https://github.com/flutter/plugins/tree/master/packages/quick_actions Now, this example is really nice in case the platform only needs to invoke a method , i.e. that call returns

问题 What is the difference between NtCreateProcess and ZwCreateProcess? In ntdll.dll, both NtCreateProcess and ZwCreateProcess point to exactly the same address 回答1: In user-mode the groups of Nt and Zw APIs are identical. In kernel mode they are different. The Nt API contains the actual implementation. The Zw API uses a system-call mechanism and ensures that it is calling in kernel-mode and that there is no need to check the parameters if they contain user-mode addresses. Otherwise you could use

问题 What is the difference between NtCreateProcess and ZwCreateProcess? In ntdll.dll, both NtCreateProcess and ZwCreateProcess point to exactly the same address 回答1: In user-mode the groups of Nt and Zw APIs are identical. In kernel mode they are different. The Nt API contains the actual implementation. The Zw API uses a system-call mechanism and ensures that it is calling in kernel-mode and that there is no need to check the parameters if they contain user-mode addresses. Otherwise you could use

问题 What is the difference between NtCreateProcess and ZwCreateProcess? In ntdll.dll, both NtCreateProcess and ZwCreateProcess point to exactly the same address 回答1: In user-mode the groups of Nt and Zw APIs are identical. In kernel mode they are different. The Nt API contains the actual implementation. The Zw API uses a system-call mechanism and ensures that it is calling in kernel-mode and that there is no need to check the parameters if they contain user-mode addresses. Otherwise you could use

问题 I’m looking for a way to assign a Surface (native window) object to a display so that the buffers submitted to that native window would be rendered to that specific display rather than to the main display. I would like to do that in native code. In Java, it can be done by using the Presentation API. In native code I tried to call SurfaceComposerClient::setDisplaySurface() , passing to it the display's IBinder object (returned by SurfaceComposerClient::getBuiltInDisplay() ), and the