[android] set connectivity state pro-actively

1 files changed, 43 insertions, 0 deletions

diff --git a/platform/android/src/connectivity_listener.cpp b/platform/android/src/connectivity_listener.cpp
new file mode 100644
index 0000000000..df5c60a485
--- /dev/null
+++ b/platform/android/src/connectivity_listener.cpp
@@ -0,0 +1,43 @@
+#include "connectivity_listener.hpp"
+
+#include <mbgl/storage/network_status.hpp>
+#include <mbgl/platform/log.hpp>
+
+#include <jni/jni.hpp>
+
+namespace mbgl {
+namespace android {
+
+    /**
+     * Invoked when the construction is initiated from the jvm
+     */
+    ConnectivityListener::ConnectivityListener(jni::JNIEnv&) {}
+
+    ConnectivityListener::~ConnectivityListener() {}
+
+    void ConnectivityListener::onConnectivityStateChanged(jni::JNIEnv&, jni::jboolean connected) {
+        NetworkStatus::Set(connected ? NetworkStatus::Status::Online : NetworkStatus::Status::Offline);
+    }
+
+    jni::Class<ConnectivityListener> ConnectivityListener::javaClass;
+
+    void ConnectivityListener::registerNative(jni::JNIEnv& env) {
+        //Lookup the class
+        ConnectivityListener::javaClass = *jni::Class<ConnectivityListener>::Find(env).NewGlobalRef(env).release();
+
+        #define METHOD(MethodPtr, name) jni::MakeNativePeerMethod<decltype(MethodPtr), (MethodPtr)>(name)
+
+        //Register the peer
+        jni::RegisterNativePeer<ConnectivityListener>(
+            env,
+            ConnectivityListener::javaClass,
+            "nativePtr",
+            std::make_unique<ConnectivityListener, JNIEnv&>,
+            "initialize",
+            "finalize",
+            METHOD(&ConnectivityListener::onConnectivityStateChanged, "nativeOnConnectivityStateChanged")
+        );
+    }
+
+} //android
+} //mbgl
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