ArcGIS有爲用戶提供了兩種彈框,一個是AGSCallout:
這種彈框提供簡單信息展示,點擊i圖標後可觸發另外的事件。
結合點擊檢索圖層元素的使用代碼:
- (void)geoView:(AGSGeoView *)geoView didTapAtScreenPoint:(CGPoint)screenPoint mapPoint:(AGSPoint *)mapPoint {
//進行i查詢,tolerance大致是指精確的範圍,api有英文解釋
__weak __typeof(self)weakSelf = self;
[geoView identifyLayersAtScreenPoint:screenPoint tolerance:2.0 returnPopupsOnly:NO completion:^(NSArray<AGSIdentifyLayerResult *> * _Nullable identifyResults, NSError * _Nullable error) {
if (identifyResults.count) {
//得到的i查詢結果一般是最大層的圖層信息,這裏得到的是動態圖層信息
AGSIdentifyLayerResult *result = identifyResults.firstObject;
if (result.sublayerResults.count) {
//當然,咱們要的是圖層上的元素信息,此處取第一個
AGSIdentifyLayerResult *oneLayer = result.sublayerResults.firstObject;
id<AGSGeoElement> geo = oneLayer.geoElements.firstObject;
if (geo.geometry.geometryType == AGSGeometryTypePolyline || geo.geometry.geometryType == AGSGeometryTypePolygon) {
[weakSelf.mapView setViewpointGeometry:geo.geometry padding:1.0 completion:^(BOOL finished) {
}];
//計算面積
double areaNumber = [AGSGeometryEngine geodeticAreaOfGeometry:geo.geometry areaUnit:[AGSAreaUnit unitWithUnitID:AGSAreaUnitIDSquareMeters] curveType:AGSGeodeticCurveTypeShapePreserving];
//標題取圖層元素名稱
weakSelf.mapView.callout.title = oneLayer.layerContent.name;
weakSelf.mapView.callout.detail = [NSString stringWithFormat:@"面積:%.2f平米",areaNumber];
// weakSelf.mapView.callout.accessoryButtonType = UIButtonTypeCustom;//去掉自帶的i圖標
// weakSelf.mapView.callout.accessoryButtonImage = nil;//自定義i圖標
weakSelf.mapView.callout.delegate = weakSelf;
[weakSelf.mapView.callout showCalloutAt:geo.geometry.extent.center screenOffset:CGPointZero rotateOffsetWithMap:YES animated:YES];
}
}
}
}];
}
AGSCallout提供了一些代理回調事件,比如點擊i圖標,詳見AGSCalloutDelegate。還一個是AGSPopup:
這種彈框展示可以承載多頁與更多的信息。
使用代碼:
- (void)geoView:(AGSGeoView *)geoView didTapAtScreenPoint:(CGPoint)screenPoint mapPoint:(AGSPoint *)mapPoint {
//進行i查詢,tolerance大致是指精確的範圍,api有英文解釋
__weak __typeof(self)weakSelf = self;
[geoView identifyLayersAtScreenPoint:screenPoint tolerance:2.0 returnPopupsOnly:NO completion:^(NSArray<AGSIdentifyLayerResult *> * _Nullable identifyResults, NSError * _Nullable error) {
if (identifyResults.count) {
//得到的i查詢結果一般是最大層的圖層信息,這裏得到的是動態圖層信息
AGSIdentifyLayerResult *result = identifyResults.firstObject;
if (result.sublayerResults.count) {
//當然,咱們要的是圖層上的元素信息,此處取第一個
AGSIdentifyLayerResult *oneLayer = result.sublayerResults.firstObject;
id<AGSGeoElement> geo = oneLayer.geoElements.firstObject;
if (geo.geometry.geometryType == AGSGeometryTypePolyline || geo.geometry.geometryType == AGSGeometryTypePolygon) {
AGSPopup *pop = [AGSPopup popupWithGeoElement:geo];//創建一個pop
AGSPopupsViewController *popCon = [[AGSPopupsViewController alloc] initWithPopups:@[pop]];//一個pop控制器可以顯示多個pop
popCon.delegate = self;
[weakSelf presentViewController:popCon animated:YES completion:nil];
}
}
}
}];
}
AGSPopupsViewControllerDelegate代理提供了完成按鈕的點擊事件回調:
-(void)popupsViewControllerDidFinishViewingPopups:(AGSPopupsViewController *)popupsViewController {
[popupsViewController dismissViewControllerAnimated:YES completion:nil];
}