How to specify external C++ source folders for Android NDK with Gradle -

-

i want add c++ source files android studio project not in project tree. i'm new gradle, , tried research as possible. read, following build.gradle file should work, doesn't. bit jni.sourcedirs came post: http://www.shaneenishry.com/blog/2014/08/17/ndk-with-android-studio/

is right approach?

apply plugin: 'com.android.application'  android {     compilesdkversion 22     buildtoolsversion "22.0.1"     defaultconfig {         applicationid "com.mycompany.myapp"         minsdkversion 22         targetsdkversion 22          ndk {             modulename "mymodule"             ldlibs "log"         }     }     buildtypes {         release {             minifyenabled false             proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.txt'         }     }      sourcesets.main {         jni.srcdirs '../external/source/dir'     } }

have @ article this: http://www.sureshjoshi.com/mobile/android-ndk-in-android-studio-with-swig/

there 2 things need know here. default, if have external libs want loaded android application, looked in (module)/src/main/jnilibs. can change using setting sourcesets.main.jnilibs.srcdirs in module’s build.gradle. you’ll need subdirectory libraries each architecture you’re targeting (e.g. x86, arm, mips, arm64-v8a, etc…)

the code want compiled default ndk toolchain located in (module)/src/main/jni , above, can change setting sourcesets.main.jni.srcdirs in module’s build.gradle

and sample gradle file page:

apply plugin: 'com.android.application'  android {     compilesdkversion 21     buildtoolsversion "21.1.2"      defaultconfig {         applicationid "com.sureshjoshi.android.ndkexample"         minsdkversion 15         targetsdkversion 21         versioncode 1         versionname "1.0"          ndk {             modulename "seeplusplus" // name of c++ module (i.e. libseeplusplus)             cflags "-std=c++11 -fexceptions" // add provisions allow c++11 functionality             stl "gnustl_shared" // stl library use: gnustl or stlport         }     }      buildtypes {         release {             minifyenabled false             proguardfiles getdefaultproguardfile('proguard-android.txt'), 'proguard-rules.pro'         }     } }

also, when specifying external /jni directory, try using full build path (using 1 of macros, eg):

'${project.builddir}/../../thirdparty/blah/blah/'

Comments

Post a Comment

Popular posts from this blog

python - No exponential form of the z-axis in matplotlib-3D-plots -

-
Image
i have similar problem described in how prevent numbers being changed exponential form in python matplotlib figure : i don't want (in special case) weird scientific formatting of axis. problem different have problem @ z -axis. 2-d plots can use ax.get_yaxis().get_major_formatter().set_useoffset(false) . , there no function ax.get_zaxis() what use format z -axis same way? edit: example: from mpl_toolkits.mplot3d import axes3d import numpy np import sys import matplotlib import matplotlib.pyplot pyplot def func(xi, ti): res = 10e3 + np.cos(ti) * np.sin(xi) return res if __name__ == '__main__': timespacing = 20 timestart = 0 timeend = 1 time = np.linspace(timestart, timeend, timespacing) widthspacing = 50 widthstart = 0 widthend = 3 width = np.linspace(widthstart, widthend, widthspacing) reslist = [] matplotlib.rcparams['legend.fontsize'] = 10 fig = pyplot.figure() ax = fig.gca(projection = '3d...
Read more

php - Best Light server (Linux + Web server + Database) for Raspberry Pi -

-
i install web server database on raspberry pi (little computer). computer has 1gb ram. i want know best combination: linux distribution , web server , dbms run local server multiple users minimal latency, use php on server. , best settings performance , not have bugs (memory usage, disable plugin, disable service, etc)? i thought light debian , lighttpd server , sqlite database. solution? i think lighttpd + sqlite great choice. linux distro, debian @ centos or tiny core linux , although i'm not sure of compatibility pi. obviously, can't go wrong raspbian if want use in production , more stable performance, few more pi's , set them in cluster .
Read more

c# - "Newtonsoft.Json.JsonSerializationException unable to find constructor to use for types" error when deserializing class -

-
i developing app in xamarin android. have splash screen serialize class , pass mainactivity using intent . when try deserialize in mainactivity error message : "serializationexception unable find constructor use types" serialization : void loaddata() { currency currency = new currency(this); intent = new intent(this, typeof(mainactivity)); intent.putextra("currency", newtonsoft.json.jsonconvert.serializeobject(currency)); startactivity(intent); } deserialization : cur = newtonsoft.json.jsonconvert.deserializeobject<currency> (intent.getstringextra("currency")); // error here class constructor : public currency(context context) { thiscontext = context; } i began experiencing problem after added parameter context context constructor. has caused this? how can solve it? possible serialize/deserialize class has parameters? you need have empty constructor in currency class in order deserialize it. ...
Read more