Databases
StackOverflow2013
Postsdbo
POInvoke an abstract method by reflection
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POInvoke an abstract method by reflection
    text
    copied!<p>I have a class <code>SomeTaskManager</code> with an abstract method <code>runATask</code>. I want to execute the <code>runATask</code> method via reflection, this is my code : what am I missing?</p> <pre><code>SomeTaskManager pm= (SomeTaskManager)context.getSomeTaskManager(); Class c = Class.forName( pm.getClass().getName() ); Method[] allMethods = c.getDeclaredMethods(); for (Method m : allMethods) { if (!m.getName().equals("runATask")) { continue; } m.invoke( c ,new Object[] { someParam, null, 1}); break; } </code></pre> <p>I'm getting this errors</p> <pre><code>java.lang.IllegalArgumentException: object is not an instance of the class at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:507) at de.vogella.android.downloadmanager.DownloadManagerActivity.riflesso(DownloadManagerActivity.java:250) at de.vogella.android.downloadmanager.DownloadManagerActivity.onCreate(DownloadManagerActivity.java:68) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1722) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1784) at android.app.ActivityThread.access$1500(ActivityThread.java:123) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:130) at android.app.ActivityThread.main(ActivityThread.java:3835) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:507) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:847) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605) </code></pre>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload