I fixed the app crashing exception for Android after pressing 'back' key multiple times after opening the print window. (#149)

2017-09-05 20:18:21 +02:00
parent 8b1f92a0a1
commit ee9fba07ac
1 changed files with 8 additions and 6 deletions
--- a/src/android/Printer.java
+++ b/src/android/Printer.java
@@ -347,14 +347,16 @@ public class Printer extends CordovaPlugin {
     */
    @Override
    public void onDestroy() {
-        pm.unsetOnPrintJobStateChangeListener();
+ 	if(pm != null && listener != null && command != null && view != null) {
+       	   pm.unsetOnPrintJobStateChangeListener();

-        pm       = null;
-        listener = null;
-        command  = null;
-        view     = null;
+       	   pm       = null;
+           listener = null;
+           command  = null;
+           view     = null;

-        super.onDestroy();
+           super.onDestroy();
+	}
    }

    /**