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Added some platform specific API functions for Android:
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SDL_AndroidGetJNIEnv()
SDL_AndroidGetActivity()
SDL_AndroidGetInternalStoragePath()
SDL_AndroidGetExternalStorageState()
SDL_AndroidGetExternalStoragePath()
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@slouken
slouken committed Nov 2, 2012
1 parent d3748b8 commit 6cf1d1f
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Showing 2 changed files with 196 additions and 3 deletions.
47 changes: 46 additions & 1 deletion include/SDL_system.h
View file
Expand Up @@ -43,6 +43,11 @@ extern "C" {
/* *INDENT-ON* */
#endif

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
/* Platform specific functions for iOS
/*
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#if __IPHONEOS__

extern DECLSPEC int SDLCALL SDL_iPhoneSetAnimationCallback(SDL_Window * window, int interval, void (*callback)(void*), void *callbackParam);
Expand All @@ -53,7 +58,47 @@ extern DECLSPEC void SDLCALL SDL_iPhoneSetEventPump(SDL_bool enabled);
#define SDL_iPhoneKeyboardToggle SDL_ToggleScreenKeyboard
#define SDL_iPhoneKeyboardIsShown SDL_IsScreenKeyboardShown

#endif
#endif /* __IPHONEOS__ */


/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
/* Platform specific functions for Android
/*
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#if __ANDROID__

/* Get the JNI environment for the current thread
This returns JNIEnv*, but the prototype is void* so we don't need jni.h
*/
extern DECLSPEC void * SDLCALL SDL_AndroidGetJNIEnv();

/* Get the SDL Activity object for the application
This returns jobject, but the prototype is void* so we don't need jni.h
*/
extern DECLSPEC void * SDLCALL SDL_AndroidGetActivity();

/* See the official Android developer guide for more information:
http://developer.android.com/guide/topics/data/data-storage.html
*/
#define SDL_ANDROID_EXTERNAL_STORAGE_READ 0x01
#define SDL_ANDROID_EXTERNAL_STORAGE_WRITE 0x02

/* Get the path used for internal storage for this application */
extern DECLSPEC const char * SDLCALL SDL_AndroidGetInternalStoragePath();

/* Get the current state of external storage, a bitmask of these values:
SDL_ANDROID_EXTERNAL_STORAGE_READ
SDL_ANDROID_EXTERNAL_STORAGE_WRITE
If external storage is currently unavailable, this will return 0.
*/
extern DECLSPEC int SDLCALL SDL_AndroidGetExternalStorageState();

/* Get the path used for external storage for this application */
extern DECLSPEC const char * SDLCALL SDL_AndroidGetExternalStoragePath();

#endif /* __ANDROID__ */


/* Ends C function definitions when using C++ */
#ifdef __cplusplus
Expand Down
152 changes: 150 additions & 2 deletions src/core/android/SDL_android.cpp
View file
Expand Up @@ -24,6 +24,7 @@

#ifdef __ANDROID__

#include "SDL_system.h"
#include "SDL_android.h"

extern "C" {
Expand Down Expand Up @@ -963,8 +964,6 @@ extern "C" int Android_JNI_ShowTextInput(SDL_Rect *inputRect)

/*extern "C" int Android_JNI_HideTextInput()
{
JNIEnv *env = Android_JNI_GetEnv();
if (!env) {
return -1;
Expand All @@ -978,6 +977,155 @@ extern "C" int Android_JNI_ShowTextInput(SDL_Rect *inputRect)
return 0;
}*/

//////////////////////////////////////////////////////////////////////////////
//
// Functions exposed to SDL applications in SDL_system.h
//

extern "C" void *SDL_AndroidGetJNIEnv()
{
return Android_JNI_GetEnv();
}

extern "C" void *SDL_AndroidGetActivity()
{
LocalReferenceHolder refs;
jmethodID mid;

JNIEnv *env = Android_JNI_GetEnv();
if (!refs.init(env)) {
return NULL;
}

// return SDLActivity.getContext();
mid = env->GetStaticMethodID(mActivityClass,
"getContext","()Landroid/content/Context;");
return env->CallStaticObjectMethod(mActivityClass, mid);
}

extern "C" const char * SDL_AndroidGetInternalStoragePath()
{
static char *s_AndroidInternalFilesPath = NULL;

if (!s_AndroidInternalFilesPath) {
LocalReferenceHolder refs;
jmethodID mid;
jobject context;
jobject fileObject;
jstring pathString;
const char *path;

JNIEnv *env = Android_JNI_GetEnv();
if (!refs.init(env)) {
return NULL;
}

// context = SDLActivity.getContext();
mid = env->GetStaticMethodID(mActivityClass,
"getContext","()Landroid/content/Context;");
context = env->CallStaticObjectMethod(mActivityClass, mid);

// fileObj = context.getFilesDir();
mid = env->GetMethodID(env->GetObjectClass(context),
"getFilesDir", "()Ljava/io/File;");
fileObject = env->CallObjectMethod(context, mid);
if (!fileObject) {
SDL_SetError("Couldn't get internal directory");
return NULL;
}

// path = fileObject.getAbsolutePath();
mid = env->GetMethodID(env->GetObjectClass(fileObject),
"getAbsolutePath", "()Ljava/lang/String;");
pathString = (jstring)env->CallObjectMethod(fileObject, mid);

path = env->GetStringUTFChars(pathString, NULL);
s_AndroidInternalFilesPath = SDL_strdup(path);
env->ReleaseStringUTFChars(pathString, path);
}
return s_AndroidInternalFilesPath;
}

extern "C" int SDL_AndroidGetExternalStorageState()
{
LocalReferenceHolder refs;
jmethodID mid;
jclass cls;
jstring stateString;
const char *state;
int stateFlags;

JNIEnv *env = Android_JNI_GetEnv();
if (!refs.init(env)) {
return 0;
}

cls = env->FindClass("android/os/Environment");
mid = env->GetStaticMethodID(cls,
"getExternalStorageState", "()Ljava/lang/String;");
stateString = (jstring)env->CallStaticObjectMethod(cls, mid);

state = env->GetStringUTFChars(stateString, NULL);

// Print an info message so people debugging know the storage state
__android_log_print(ANDROID_LOG_INFO, "SDL", "external storage state: %s", state);

if (SDL_strcmp(state, "mounted") == 0) {
stateFlags = SDL_ANDROID_EXTERNAL_STORAGE_READ |
SDL_ANDROID_EXTERNAL_STORAGE_WRITE;
} else if (SDL_strcmp(state, "mounted_ro") == 0) {
stateFlags = SDL_ANDROID_EXTERNAL_STORAGE_READ;
} else {
stateFlags = 0;
}
env->ReleaseStringUTFChars(stateString, state);

return stateFlags;
}

extern "C" const char * SDL_AndroidGetExternalStoragePath()
{
static char *s_AndroidExternalFilesPath = NULL;

if (!s_AndroidExternalFilesPath) {
LocalReferenceHolder refs;
jmethodID mid;
jobject context;
jobject fileObject;
jstring pathString;
const char *path;

JNIEnv *env = Android_JNI_GetEnv();
if (!refs.init(env)) {
return NULL;
}

// context = SDLActivity.getContext();
mid = env->GetStaticMethodID(mActivityClass,
"getContext","()Landroid/content/Context;");
context = env->CallStaticObjectMethod(mActivityClass, mid);

// fileObj = context.getExternalFilesDir();
mid = env->GetMethodID(env->GetObjectClass(context),
"getExternalFilesDir", "(Ljava/lang/String;)Ljava/io/File;");
fileObject = env->CallObjectMethod(context, mid, NULL);
if (!fileObject) {
SDL_SetError("Couldn't get external directory");
return NULL;
}

// path = fileObject.getAbsolutePath();
mid = env->GetMethodID(env->GetObjectClass(fileObject),
"getAbsolutePath", "()Ljava/lang/String;");
pathString = (jstring)env->CallObjectMethod(fileObject, mid);

path = env->GetStringUTFChars(pathString, NULL);
s_AndroidExternalFilesPath = SDL_strdup(path);
env->ReleaseStringUTFChars(pathString, path);
}
return s_AndroidExternalFilesPath;
}

#endif /* __ANDROID__ */

/* vi: set ts=4 sw=4 expandtab: */

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