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Android: add robustness. check that the native code is run for the first time.

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Sylvain 2023-06-09 09:41:54 +02:00 committed by Sylvain Becker
parent ae9d8acc3b
commit 8096f7269b
2 changed files with 32 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
View File

@ -398,6 +398,24 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
return;
}
/* Control activity re-creation */
/* Robustness: check that the native code is run for the first time.
* (Maybe Activity was reset, but not the native code.) */
{
int run_count = SDLActivity.nativeCheckSDLThreadCounter(); /* get and increment a native counter */
if (run_count != 0) {
boolean allow_recreate = SDLActivity.nativeAllowRecreateActivity();
if (allow_recreate) {
Log.v(TAG, "activity re-created // run_count: " + run_count);
} else {
Log.v(TAG, "activity finished // run_count: " + run_count);
System.exit(0);
return;
}
}
}
// Set up JNI
SDL.setupJNI();
@ -971,6 +989,7 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
public static native void onNativeLocaleChanged();
public static native void onNativeDarkModeChanged(boolean enabled);
public static native boolean nativeAllowRecreateActivity();
public static native int nativeCheckSDLThreadCounter();
/**
* This method is called by SDL using JNI.

14
src/core/android/SDL_android.c
View File

@ -170,6 +170,9 @@ JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(nativePermissionResult)(
JNIEXPORT jboolean JNICALL SDL_JAVA_INTERFACE(nativeAllowRecreateActivity)(
JNIEnv *env, jclass jcls);
JNIEXPORT int JNICALL SDL_JAVA_INTERFACE(nativeCheckSDLThreadCounter)(
JNIEnv *env, jclass jcls);
static JNINativeMethod SDLActivity_tab[] = {
{ "nativeGetVersion", "()Ljava/lang/String;", SDL_JAVA_INTERFACE(nativeGetVersion) },
{ "nativeSetupJNI", "()I", SDL_JAVA_INTERFACE(nativeSetupJNI) },
@ -203,6 +206,7 @@ static JNINativeMethod SDLActivity_tab[] = {
{ "nativeAddTouch", "(ILjava/lang/String;)V", SDL_JAVA_INTERFACE(nativeAddTouch) },
{ "nativePermissionResult", "(IZ)V", SDL_JAVA_INTERFACE(nativePermissionResult) },
{ "nativeAllowRecreateActivity", "()Z", SDL_JAVA_INTERFACE(nativeAllowRecreateActivity) },
{ "nativeCheckSDLThreadCounter", "()I", SDL_JAVA_INTERFACE(nativeCheckSDLThreadCounter) }
};
/* Java class SDLInputConnection */
@ -738,7 +742,15 @@ JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(nativeSetupJNI)(JNIEnv *env
/* SDL main function prototype */
typedef int (*SDL_main_func)(int argc, char *argv[]);
static int run_count = 1;
static int run_count = 0;
JNIEXPORT int JNICALL SDL_JAVA_INTERFACE(nativeCheckSDLThreadCounter)(
JNIEnv *env, jclass jcls)
{
int tmp = run_count;
run_count += 1;
return tmp;
}
static void SDLCALL SDL_AllowRecreateActivityChanged(void *userdata, const char *name, const char *oldValue, const char *hint)
{