BMKText *_textOverlay = [BMKText textWithCenterCoordinate:CLLocationCoordinate2DMake(40.005, 116.554) 
text:@“天安门”]; 
// 向地图View添加Overlay，需要实现BMKMapViewDelegate的-mapView:viewForOverlay:方法来生成标注对应的View 
[_mapView addOverlay:_textOverlay];   

- (__kindof BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id<BMKOverlay>)overlay { 
    if ([overlay isEqual:_textOverlay]) { 
        BMKTextView *textView = [[BMKTextView alloc] initWithTextOverlay:_textOverlay]; 
        textView.textColor = [UIColor redColor]; // 字体颜色 
        textView.backgroundColor = [UIColor colorWithRed:0 green:1 blue:0 alpha:0.3]; // 背景色 
        textView.fontSize = 12; // 字体大小 
        textView.textFontType = kBMKTextFontNormal; 
        textView.textAlignment = NSTextAlignmentCenter; // 文字对齐方式 
        textView.textMaxLineWidth = 60; // 行宽 
        textView.textLineSpacing = 0.f; // 行间距 
        textView.textParagraphSpacing = 2; // 字符间距 
        textView.textLineBreakMode = NSLineBreakByCharWrapping; // 字符截断类型          
        return textView;          
    } 
    return nil; 
}