在Android应用程序中,可以使用C++编写代码,并通过加载共享库来调用该代码。但是,如果在共享库中发生未捕获的异常,可能会导致应用程序崩溃。以下是解决这个问题的一种方法:
#include
#include
#include
class ExceptionHandler {
public:
static void handleException() {
try {
throw; // Rethrow the exception to get the type
} catch (const std::exception& e) {
// Handle std::exception
__android_log_print(ANDROID_LOG_ERROR, "ExceptionHandler", "Caught std::exception: %s", e.what());
} catch (...) {
// Handle other exceptions
__android_log_print(ANDROID_LOG_ERROR, "ExceptionHandler", "Caught unknown exception");
}
// Terminate the application gracefully
exit(1);
}
};
extern "C" JNIEXPORT jint JNICALL
Java_com_example_myapp_MainActivity_nativeInit(JNIEnv* env, jobject /* this */) {
// Set the exception handler
std::set_terminate(ExceptionHandler::handleException);
// Your initialization code here
// ...
return 0;
}
#include
#include
#include
extern "C" JNIEXPORT void JNICALL
Java_com_example_myapp_MainActivity_nativeFunction(JNIEnv* env, jobject /* this */) {
try {
// Your code that may throw an exception here
// ...
} catch (const std::exception& e) {
// Handle std::exception or rethrow
__android_log_print(ANDROID_LOG_ERROR, "NativeCode", "Caught std::exception: %s", e.what());
throw; // Rethrow the exception
} catch (...) {
// Handle other exceptions or rethrow
__android_log_print(ANDROID_LOG_ERROR, "NativeCode", "Caught unknown exception");
throw; // Rethrow the exception
}
}
public class MainActivity extends AppCompatActivity {
static {
System.loadLibrary("native-lib");
}
private native int nativeInit();
private native void nativeFunction();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
nativeInit(); // Call the initialization function
try {
nativeFunction(); // Call the function that may throw an exception
} catch (Exception e) {
// Handle the exception if needed
e.printStackTrace();
}
}
}
通过这种方式,在共享库中发生未捕获的异常时,可以捕获并处理该异常,而不会导致应用程序崩溃。