Fix #130

android/build.gradle

@@ -2,7 +2,7 @@ apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 
 buildscript {
-    ext.kotlin_version = '1.2.0'
+    ext.kotlin_version = '1.2.20'
 
     repositories {
         jcenter()
@@ -27,5 +27,5 @@ android {
 dependencies {
     provided 'com.facebook.react:react-native:+'
     compile 'com.amap.api:navi-3dmap:5.3.0_3dmap5.3.0'
-    compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
+    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 }

android/src/main/java/cn/qiuxiang/react/amap3d/maps/AMapMarker.kt

@@ -135,6 +135,7 @@ class AMapMarker(context: Context) : ReactViewGroup(context), AMapOverlay {
 
     fun updateIcon() {
         icon?.let {
+            if (it.width != 0 && it.height != 0) {
                 val bitmap = Bitmap.createBitmap(
                     it.width, it.height, Bitmap.Config.ARGB_8888)
                 it.draw(Canvas(bitmap))
@@ -142,6 +143,7 @@ class AMapMarker(context: Context) : ReactViewGroup(context), AMapOverlay {
                 marker?.setIcon(bitmapDescriptor)
             }
         }
+    }
 
     fun setImage(name: String) {
         val drawable = context.resources.getIdentifier(name, "drawable", context.packageName)