Android NDK 构建以支持所有可用设备

Question

I am using in my project both java files and native c++ code. I would like to make the app available for all devices and hardware (API lvl >= 15). I am also using OpenCV4Android both in java and my native c++ if that matters. I'm not quite sure if my current configuration is sufficient to support all available hardware:

Application.mk

APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -fexceptions
APP_ABI := armeabi-v7a
APP_PLATFORM := android-9

Android.mk

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

OPENCV_CAMERA_MODULES:=on
OPENCV_INSTALL_MODULES:=on

include C:/OpenCV4Android/OpenCV-android-sdk/sdk/native/jni/OpenCV.mk

LOCAL_MODULE    := myNativeLib
LOCAL_SRC_FILES := myNativeLib.cpp
LOCAL_LDLIBS +=  -llog -ldl

include $(BUILD_SHARED_LIBRARY)

I have tested this configuration on a few devices and it seems to work but doesn't APP_ABI := armeabi-v7a narrow down the supported devices to only those with armeabi-v7a , or actually every device will be able to run it? Maybe I should insert APP_ABI := all as mentioned here?https://developer.android.com/ndk/guides/application_mk.html

It is very important to me to make the app responding and working for all devices possible.

Answer 1

To support all platforms you should use APP_ABI := all . For API 15 use APP_PLATFORM := android-15 . Pay attention that the more platforms you will support the larger your apk file will be, since it will create a binary for each supported platform in your APK.