android-ndk

问题 I plan to develop Android application which will encrypt/decrypt voice data such that parties can communicate using secure channel. So the question is: how to intercept voice/audio data during GSM call? Is it possible or not? Should I use Android NDK or something else? 回答1: This is something that happens in the low level of the operating system. You wouldn't be able to access this information in the application level. I suggest that you look into VOIP like SipDroid. I bet you'll be able to

问题 I plan to develop Android application which will encrypt/decrypt voice data such that parties can communicate using secure channel. So the question is: how to intercept voice/audio data during GSM call? Is it possible or not? Should I use Android NDK or something else? 回答1: This is something that happens in the low level of the operating system. You wouldn't be able to access this information in the application level. I suggest that you look into VOIP like SipDroid. I bet you'll be able to

问题 I've successfully configured and built some Qt5 applications for Android using CMake and this CMake utility. Everything worked fine until I switched from Qt5.6 to Qt5.7 . When I try to configure I get an CMake error which doesn't help me much: -- Configuring done CMake Error in CMakeLists.txt: No known features for CXX compiler "GNU" version 4.9. -- Generating done -- Build files have been written to: /path/to/build-dir I run CMake like this: ANDROID_SDK=/path/to/android-sdk-linux \ ANDROID

问题 I've successfully configured and built some Qt5 applications for Android using CMake and this CMake utility. Everything worked fine until I switched from Qt5.6 to Qt5.7 . When I try to configure I get an CMake error which doesn't help me much: -- Configuring done CMake Error in CMakeLists.txt: No known features for CXX compiler "GNU" version 4.9. -- Generating done -- Build files have been written to: /path/to/build-dir I run CMake like this: ANDROID_SDK=/path/to/android-sdk-linux \ ANDROID

问题 I've successfully configured and built some Qt5 applications for Android using CMake and this CMake utility. Everything worked fine until I switched from Qt5.6 to Qt5.7 . When I try to configure I get an CMake error which doesn't help me much: -- Configuring done CMake Error in CMakeLists.txt: No known features for CXX compiler "GNU" version 4.9. -- Generating done -- Build files have been written to: /path/to/build-dir I run CMake like this: ANDROID_SDK=/path/to/android-sdk-linux \ ANDROID

问题 Today I updated my android studio to 1.3 and I enter the NDK (android-ndk-r10e NDK version) path in local.properties (ndk.dir=C:\AndroidNDK\android-ndk-r10e\android-ndk-r10e) but I got this error. Error:Execution failed for task ':app:compileDebugNdk'. Error: NDK integration is deprecated in the current plugin. Consider trying the new experimental plugin. For details, see http://tools.android.com/tech-docs/new-build-system/gradle-experimental. Set "android.useDeprecatedNdk=true" in gradle

问题 Can we use Ble hardware(Bluetooth low energy) direct from Ndk without any java interface. I am new to NDk. So I don't know about jni, or Ndk. I want to control the bluetooth hardware directly from native code , 回答1: NO and YES. NO: There is no BLE API in ndk. YES: You can talk to BT hardware from C code. In AOSP, look under <>/hardware/libhardware/include/hardware/ there are a bunch of headers. bluetooth.h defines the interface for Android's bluetooth module. Bluedroid implements it. You

问题 Can we use Ble hardware(Bluetooth low energy) direct from Ndk without any java interface. I am new to NDk. So I don't know about jni, or Ndk. I want to control the bluetooth hardware directly from native code , 回答1: NO and YES. NO: There is no BLE API in ndk. YES: You can talk to BT hardware from C code. In AOSP, look under <>/hardware/libhardware/include/hardware/ there are a bunch of headers. bluetooth.h defines the interface for Android's bluetooth module. Bluedroid implements it. You

问题 I have successfully installed the Android SDK and also linked the SDK Manager to the SDK path. Then I have created the AVD of API 8 and it's done. But while I am going to start the Virtual Device it's not started and gives me error like "@foo" can not started, commend line error , and also give me hint: open @foo for virtual device . What exactly is 'foo'? 回答1: Spaces may be contained in the installation path of Android SDK. You may move it under a path with no space in it. 来源： https:/

问题 Hello everyone i am new to android ndk and want to find two things: Can we detect whether the microphone is on or not? Can we detect which application is using the microphone? It would be good if anyone knows any idea how to do above through C or through android sdk. 回答1: 1. AudioManager am = Context.getSystemService(Context.AUDIO_SERVICE) am.isMicrophoneMute() But I don't know how to do it using NDK (and no one seems to know). AudioManager documentation 2. No you can't. And that is a