Hi,
I am using Reflection APIs in the background thread to call a method
dynamically from another application but I am getting the Exception:
"java.lang.RuntimeException: Can't create handler inside thread that
has not called Looper.prepare() "
at a line : Object o = c.newInstance();
my code in the Thread is as follows,
onCreate
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.main);
hh_text = (TextView)findViewById(R.id.server_start);
Thread t = new Thread()
{
public void run()
{
readTheFile();
}
};
t.start();
}
public void readTheFile() {
try {
PathClassLoader loader = new PathClassLoader( "/sdcard/
test.check.apk", ClassLoader.getSystemClassLoader());
Class c = null;
c = loader.loadClass("test.check.Test1");
Log.i("See"," Test Class Found ....");
Method method = c.getMethod("xyz", null);
Object o = c.newInstance(); // This line throws exception
String s = (String) method.invoke(o);
Log.i("See","Got method: " + s);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
} }
Please help.. If you know the issue.
On Apr 6, 7:14 pm, Ask <[email protected]> wrote:
> Thanx Mark for your quick reply. I will try it out and get back
>
> On Apr 6, 6:49 pm, Mark Murphy <[email protected]> wrote:
>
>
>
> > Asif k wrote:
> > > But in my case, I am getting all 3 messages at a time after
> > > activity execution completed.
>
> > That is probably because you are doing long-running work on the UI thread.
>
> > > Is there any API available, using which
> > > I can show the status during the execution also.
>
> > Anything long-running should be in a background thread, in the activity
> > or wrapped in a service. Then, use Handler or runOnUiThread() or
> > something so the background thread can have the UI thread update your
> > TextView.
>
> > --
> > Mark Murphy (a Commons
> > Guy)http://commonsware.com|http://twitter.com/commonsguy
>
> > Android App Developer Training:http://commonsware.com/training.html- Hide
> > quoted text -
>
> - Show quoted text -
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