android-ndk

问题 I'm trying to build android adb tool from the sources. Since file Android.mk is presented i'm running ndk-build tool to build it. But unfortunately i'm having following errors: /Users/user/Documents/dev/tmp/adb/jni/Android.mk:95: /softdev/android-ndk-r10c/build/core/build-host-static-library.mk: No such file or directory /Users/user/Documents/dev/tmp/adb/jni/Android.mk:183: /softdev/android-ndk-r10c/build/core/build-host-executable.mk: No such file or directory Android NDK: Trying to define

问题 I'm developing a native apk for android with NDK 5. My question is, how do I access to write and read from external SD card from native code? PS: Testing under Galaxy Tab. 回答1: Have you tried: fopen("/sdcard/filename.ext", "r+") ? 回答2: Please read this answer, things are little bit complicated for Galaxy Tab 来源： https://stackoverflow.com/questions/4661664/acess-external-sd-card-with-ndk

问题 I'm currently developping an android app with android studio, for this project i need to use a custom library written in c/c++ . So i in order to do that i needed to use NDK. The library contain methods that i need to implements in order to have access to specifics fonctions in android My question is : how can I call my jni method inside the method existing in c which will call a java method to store session key in the android system So for a pratical exemple since it's maybe not clear: In a

问题 Issue I wonder how to make file hierarchy of assets folder in Android from native code. I'm using AAssetManager_openDir but AAssetDir_getNextFileName doesn't return any directory names so basically I have no way to dive deeper into hierarchy because I can't obtain names of subfolders. Is there any way to resolve this issue with AAssetManager or should I implement this in Java? Example Assets looks like a/ file1 file2 b/ file3 c/ file4 C++ code AAssetDir* assetDir = AAssetManager_openDir(env,

问题 I'm currently using Spotify in my Android app, but I am required to use a Secret in order to refresh tokens and such. I would like to transmit the secret from my Backend to the app, so the secret does not reside in the APK and cannot be found when decompiling. I've read a lot only about securing secrets in your app, via various ways like proxies, just using your own backend, putting the code into native C++ code (NDK) in the app or using the Hash of the app to determine whether the app is

问题 I've been trying to use the Android NDK's AssetManager class in my Flutter app, that works with Google Oboe, to access to audio files. Following this example in the Oboe repository, I learned that they obtain the AssetManager from Java like this: JNIEXPORT void JNICALL Java_com_google_oboe_sample_rhythmgame_MainActivity_native_1onStart(JNIEnv *env, jobject instance, jobject jAssetManager) { AAssetManager *assetManager = AAssetManager_fromJava(env, jAssetManager); if (assetManager == nullptr)

问题 I've been trying to use the Android NDK's AssetManager class in my Flutter app, that works with Google Oboe, to access to audio files. Following this example in the Oboe repository, I learned that they obtain the AssetManager from Java like this: JNIEXPORT void JNICALL Java_com_google_oboe_sample_rhythmgame_MainActivity_native_1onStart(JNIEnv *env, jobject instance, jobject jAssetManager) { AAssetManager *assetManager = AAssetManager_fromJava(env, jAssetManager); if (assetManager == nullptr)

问题 I've been trying to use the Android NDK's AssetManager class in my Flutter app, that works with Google Oboe, to access to audio files. Following this example in the Oboe repository, I learned that they obtain the AssetManager from Java like this: JNIEXPORT void JNICALL Java_com_google_oboe_sample_rhythmgame_MainActivity_native_1onStart(JNIEnv *env, jobject instance, jobject jAssetManager) { AAssetManager *assetManager = AAssetManager_fromJava(env, jAssetManager); if (assetManager == nullptr)

问题 I made an ndk based android app, and when I run it by clicking the run button in Android Studio, I found the app been installed, and running on my connected android device. But it complains that it could not load some .so files like libc++_shared.so and libomp.so , I did some research, and created a jniLibs in my app\src\main folder, and copied those two .so files into that, now everything works fine. However, it is still unclear to me what happened exactly: when I click the run button, where

问题 I made an ndk based android app, and when I run it by clicking the run button in Android Studio, I found the app been installed, and running on my connected android device. But it complains that it could not load some .so files like libc++_shared.so and libomp.so , I did some research, and created a jniLibs in my app\src\main folder, and copied those two .so files into that, now everything works fine. However, it is still unclear to me what happened exactly: when I click the run button, where