kivy · xuhcc · Aug 18, 2019
diff --git a/pythonforandroid/bootstraps/common/build/build.py b/pythonforandroid/bootstraps/common/build/build.py
@@ -274,7 +274,7 @@ def compile_dir(dfn, optimize_python=True):
 def make_package(args):
     # If no launcher is specified, require a main.py/main.pyo:
     if (get_bootstrap_name() != "sdl" or args.launcher is None) and \
-            get_bootstrap_name() != "webview":
+            get_bootstrap_name() not in ["webview", "library"]:
         # (webview doesn't need an entrypoint, apparently)
         if args.private is None or (
                 not exists(join(realpath(args.private), 'main.py')) and
@@ -509,8 +509,9 @@ def make_package(args):
         aars=aars,
         jars=jars,
         android_api=android_api,
-        build_tools_version=build_tools_version
-        )
+        build_tools_version=build_tools_version,
+        is_library=get_bootstrap_name() == 'library',
+    )
 
     # ant build templates
     render(

diff --git a/pythonforandroid/bootstraps/common/build/templates/build.tmpl.gradle b/pythonforandroid/bootstraps/common/build/templates/build.tmpl.gradle
@@ -19,7 +19,11 @@ allprojects {
     }
 }
 
+{% if is_library %}
+apply plugin: 'com.android.library'
+{% else %}
 apply plugin: 'com.android.application'
+{% endif %}
 
 android {
 	compileSdkVersion {{ android_api }}

diff --git a/pythonforandroid/bootstraps/library/__init__.py b/pythonforandroid/bootstraps/library/__init__.py
@@ -0,0 +1,9 @@
+from pythonforandroid.bootstraps.service_only import ServiceOnlyBootstrap
+
+
+class LibraryBootstrap(ServiceOnlyBootstrap):
+
+    name = 'library'
+
+
+bootstrap = LibraryBootstrap()
diff --git a/pythonforandroid/bootstraps/library/build/blacklist.txt b/pythonforandroid/bootstraps/library/build/blacklist.txt
@@ -0,0 +1,89 @@
+# prevent user to include invalid extensions
+*.apk
+*.pxd
+
+# eggs
+*.egg-info
+
+# unit test
+unittest/*
+
+# python config
+config/makesetup
+
+# unused kivy files (platform specific)
+kivy/input/providers/wm_*
+kivy/input/providers/mactouch*
+kivy/input/providers/probesysfs*
+kivy/input/providers/mtdev*
+kivy/input/providers/hidinput*
+kivy/core/camera/camera_videocapture*
+kivy/core/spelling/*osx*
+kivy/core/video/video_pyglet*
+kivy/tools
+kivy/tests/*
+kivy/*/*.h
+kivy/*/*.pxi
+
+# unused encodings
+lib-dynload/*codec*
+encodings/cp*.pyo
+encodings/tis*
+encodings/shift*
+encodings/bz2*
+encodings/iso*
+encodings/undefined*
+encodings/johab*
+encodings/p*
+encodings/m*
+encodings/euc*
+encodings/k*
+encodings/unicode_internal*
+encodings/quo*
+encodings/gb*
+encodings/big5*
+encodings/hp*
+encodings/hz*
+
+# unused python modules
+bsddb/*
+wsgiref/*
+hotshot/*
+pydoc_data/*
+tty.pyo
+anydbm.pyo
+nturl2path.pyo
+LICENCE.txt
+macurl2path.pyo
+dummy_threading.pyo
+audiodev.pyo
+antigravity.pyo
+dumbdbm.pyo
+sndhdr.pyo
+__phello__.foo.pyo
+sunaudio.pyo
+os2emxpath.pyo
+multiprocessing/dummy*
+
+# unused binaries python modules
+lib-dynload/termios.so
+lib-dynload/_lsprof.so
+lib-dynload/*audioop.so
+lib-dynload/_hotshot.so
+lib-dynload/_heapq.so
+lib-dynload/_json.so
+lib-dynload/grp.so
+lib-dynload/resource.so
+lib-dynload/pyexpat.so
+lib-dynload/_ctypes_test.so
+lib-dynload/_testcapi.so
+
+# odd files
+plat-linux3/regen
+
+#>sqlite3
+# conditionnal include depending if some recipes are included or not.
+sqlite3/*
+lib-dynload/_sqlite3.so
+#<sqlite3
+
diff --git a/pythonforandroid/bootstraps/library/build/jni/Android.mk b/pythonforandroid/bootstraps/library/build/jni/Android.mk
@@ -0,0 +1 @@
+include $(call all-subdir-makefiles)
diff --git a/pythonforandroid/bootstraps/library/build/jni/Application.mk b/pythonforandroid/bootstraps/library/build/jni/Application.mk
@@ -0,0 +1,7 @@
+
+# Uncomment this if you're using STL in your project
+# See CPLUSPLUS-SUPPORT.html in the NDK documentation for more information
+# APP_STL := stlport_static 
+
+# APP_ABI := armeabi armeabi-v7a x86
+APP_ABI := $(ARCH)
diff --git a/pythonforandroid/bootstraps/library/build/jni/application/src/Android.mk b/pythonforandroid/bootstraps/library/build/jni/application/src/Android.mk
@@ -0,0 +1,18 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := main
+
+# Add your application source files here...
+LOCAL_SRC_FILES := start.c pyjniusjni.c
+
+LOCAL_CFLAGS += -I$(PYTHON_INCLUDE_ROOT) $(EXTRA_CFLAGS)
+
+LOCAL_SHARED_LIBRARIES := python_shared
+
+LOCAL_LDLIBS := -llog $(EXTRA_LDLIBS)
+
+LOCAL_LDFLAGS += -L$(PYTHON_LINK_ROOT) $(APPLICATION_ADDITIONAL_LDFLAGS)
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/pythonforandroid/bootstraps/library/build/jni/application/src/Android_static.mk b/pythonforandroid/bootstraps/library/build/jni/application/src/Android_static.mk
@@ -0,0 +1,10 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := main
+
+LOCAL_SRC_FILES := YourSourceHere.c
+
+include $(BUILD_SHARED_LIBRARY)
+$(call import-module,SDL)LOCAL_PATH := $(call my-dir)
diff --git a/pythonforandroid/bootstraps/library/build/jni/application/src/bootstrap_name.h b/pythonforandroid/bootstraps/library/build/jni/application/src/bootstrap_name.h
@@ -0,0 +1,6 @@
+
+#define BOOTSTRAP_NAME_LIBRARY
+#define BOOTSTRAP_USES_NO_SDL_HEADERS
+
+const char bootstrap_name[] = "library";
+
diff --git a/pythonforandroid/bootstraps/library/build/jni/application/src/pyjniusjni.c b/pythonforandroid/bootstraps/library/build/jni/application/src/pyjniusjni.c
@@ -0,0 +1,103 @@
+
+#include <pthread.h>
+#include <jni.h>
+
+#define LOGI(...) do {} while (0)
+#define LOGE(...) do {} while (0)
+
+#include "android/log.h"
+
+/* These JNI management functions are taken from SDL2, but modified to refer to pyjnius */
+
+/* #define LOG(n, x) __android_log_write(ANDROID_LOG_INFO, (n), (x)) */
+/* #define LOGP(x) LOG("python", (x)) */
+#define LOG_TAG "Python_android"
+#define LOGI(...)  __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
+#define LOGE(...)  __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
+
+
+/* Function headers */
+JNIEnv* Android_JNI_GetEnv(void);
+static void Android_JNI_ThreadDestroyed(void*);
+
+static pthread_key_t mThreadKey;
+static JavaVM* mJavaVM;
+
+int Android_JNI_SetupThread(void)
+{
+    Android_JNI_GetEnv();
+    return 1;
+}
+
+/* Library init */
+JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved)
+{
+    JNIEnv *env;
+    mJavaVM = vm;
+    LOGI("JNI_OnLoad called");
+    if ((*mJavaVM)->GetEnv(mJavaVM, (void**) &env, JNI_VERSION_1_4) != JNI_OK) {
+        LOGE("Failed to get the environment using GetEnv()");
+        return -1;
+    }
+    /*
+     * Create mThreadKey so we can keep track of the JNIEnv assigned to each thread
+     * Refer to http://developer.android.com/guide/practices/design/jni.html for the rationale behind this
+     */
+    if (pthread_key_create(&mThreadKey, Android_JNI_ThreadDestroyed) != 0) {
+
+        __android_log_print(ANDROID_LOG_ERROR, "pyjniusjni", "Error initializing pthread key");
+    }
+    Android_JNI_SetupThread();
+
+    return JNI_VERSION_1_4;
+}
+
+JNIEnv* Android_JNI_GetEnv(void)
+{
+    /* From http://developer.android.com/guide/practices/jni.html
+     * All threads are Linux threads, scheduled by the kernel.
+     * They're usually started from managed code (using Thread.start), but they can also be created elsewhere and then
+     * attached to the JavaVM. For example, a thread started with pthread_create can be attached with the
+     * JNI AttachCurrentThread or AttachCurrentThreadAsDaemon functions. Until a thread is attached, it has no JNIEnv,
+     * and cannot make JNI calls.
+     * Attaching a natively-created thread causes a java.lang.Thread object to be constructed and added to the "main"
+     * ThreadGroup, making it visible to the debugger. Calling AttachCurrentThread on an already-attached thread
+     * is a no-op.
+     * Note: You can call this function any number of times for the same thread, there's no harm in it
+     */
+
+    JNIEnv *env;
+    int status = (*mJavaVM)->AttachCurrentThread(mJavaVM, &env, NULL);
+    if(status < 0) {
+        LOGE("failed to attach current thread");
+        return 0;
+    }
+
+    /* From http://developer.android.com/guide/practices/jni.html
+     * Threads attached through JNI must call DetachCurrentThread before they exit. If coding this directly is awkward,
+     * in Android 2.0 (Eclair) and higher you can use pthread_key_create to define a destructor function that will be
+     * called before the thread exits, and call DetachCurrentThread from there. (Use that key with pthread_setspecific
+     * to store the JNIEnv in thread-local-storage; that way it'll be passed into your destructor as the argument.)
+     * Note: The destructor is not called unless the stored value is != NULL
+     * Note: You can call this function any number of times for the same thread, there's no harm in it
+     *       (except for some lost CPU cycles)
+     */
+    pthread_setspecific(mThreadKey, (void*) env);
+
+    return env;
+}
+
+static void Android_JNI_ThreadDestroyed(void* value)
+{
+    /* The thread is being destroyed, detach it from the Java VM and set the mThreadKey value to NULL as required */
+    JNIEnv *env = (JNIEnv*) value;
+    if (env != NULL) {
+        (*mJavaVM)->DetachCurrentThread(mJavaVM);
+        pthread_setspecific(mThreadKey, NULL);
+    }
+}
+
+void *WebView_AndroidGetJNIEnv()
+{
+    return Android_JNI_GetEnv();
+}
diff --git a/pythonforandroid/bootstraps/library/build/src/main/assets/.gitkeep b/pythonforandroid/bootstraps/library/build/src/main/assets/.gitkeep