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creating an annotation segment from a LatLng jlist encapsulated in function #1716

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This commit is contained in:
Nicholas Hallahan
2015-07-16 11:56:27 -07:00
parent e28c777307
commit d4407b7b10
1 changed files with 51 additions and 46 deletions
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97
android/cpp/jni.cpp
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@@ -165,6 +165,56 @@ std::vector<std::string> std_vector_string_from_jobject(JNIEnv *env, jobject jli
return vector;
}
mbgl::AnnotationSegment annotation_segment_from_latlng_jlist(JNIEnv *env, jobject jlist) {
mbgl::AnnotationSegment segment;
if (jlist == nullptr) {
if (env->ThrowNew(nullPointerExceptionClass, "List cannot be null.") < 0) {
env->ExceptionDescribe();
return segment;
}
return segment;
}
jobjectArray array =
reinterpret_cast<jobjectArray>(env->CallObjectMethod(jlist, listToArrayId));
if (env->ExceptionCheck() || (array == nullptr)) {
env->ExceptionDescribe();
return segment;
}
jsize len = env->GetArrayLength(array);
if (len < 0) {
env->ExceptionDescribe();
return segment;
}
segment.reserve(len);
for (jsize i = 0; i < len; i++) {
jobject latLng = reinterpret_cast<jobject>(env->GetObjectArrayElement(array, i));
if (latLng == nullptr) {
env->ExceptionDescribe();
return segment;
}
jdouble latitude = env->GetDoubleField(latLng, latLngLatitudeId);
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
return segment;
}
jdouble longitude = env->GetDoubleField(latLng, latLngLongitudeId);
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
return segment;
}
segment.push_back(mbgl::LatLng(latitude, longitude));
}
return segment;
}
jobject std_vector_string_to_jobject(JNIEnv *env, std::vector<std::string> vector) {
jobject jlist = env->NewObject(arrayListClass, arrayListConstructorId);
if (jlist == nullptr) {
@@ -513,53 +563,8 @@ jlong JNICALL nativeAddPolyline(JNIEnv *env, jobject obj, jlong nativeMapViewPtr
lineProperties.width = width;
shapeProperties.set<mbgl::LineProperties>(lineProperties);
jobject points = env->GetObjectField(polyline, polylinePointsId);
if (points == nullptr) {
if (env->ThrowNew(nullPointerExceptionClass, "List cannot be null.") < 0) {
env->ExceptionDescribe();
return -1;
}
return -1;
}
jobjectArray array =
reinterpret_cast<jobjectArray>(env->CallObjectMethod(points, listToArrayId));
if (env->ExceptionCheck() || (array == nullptr)) {
env->ExceptionDescribe();
return -1;
}
jsize len = env->GetArrayLength(array);
if (len < 0) {
env->ExceptionDescribe();
return -1;
}
mbgl::AnnotationSegment segment;
segment.reserve(len);
for (jsize i = 0; i < len; i++) {
jobject latLng = reinterpret_cast<jobject>(env->GetObjectArrayElement(array, i));
if (latLng == nullptr) {
env->ExceptionDescribe();
return -1;
}
jdouble latitude = env->GetDoubleField(latLng, latLngLatitudeId);
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
return -1;
}
jdouble longitude = env->GetDoubleField(latLng, latLngLongitudeId);
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
return -1;
}
segment.push_back(mbgl::LatLng(latitude, longitude));
}
mbgl::AnnotationSegment segment = annotation_segment_from_latlng_jlist(env, points);
std::vector<mbgl::ShapeAnnotation> shapes;
shapes.emplace_back(mbgl::AnnotationSegments {{ segment }}, shapeProperties);