Your process is getting killed, for whatever reason. When you are not in the foreground this can happen at any time. Typically when you start another activity the new activity will be full screen so the previous activity is no longer in the foreground. And if you are using startActivityForResult() to launch an activity in another app (as you are doing here), then your app's process is no longer in the foreground and may get killed.
Also I think probably 99% of the time that you would be using a static or Application instance to store state related to startActivityForResult() is wrong. This method is about making a call to another activity, whose result will be delivered back to the caller's activity. There is no global state here -- the result goes back to the original activity. The wrinkle is that this may be a new instance of the activity... but if you save your current state (including whatever state you need about a result you are waiting for) in onSaveInstanceState() and restore it in onCreate(), this will all work correctly. On Sun, Sep 19, 2010 at 12:37 PM, GregAZ <[email protected]> wrote: > That's what I thought. > > Any ideas why the value is getting lost from the application? > > I created a class that I called BaseClass that inherits Application. > That class contains: > > private String uploadUrl; > > public String getUploadUrl(){ > return uploadUrl; > } > public void setUploadUrl(String url){ > uploadUrl = url; > } > > In my activity, I'm setting it: > public void onPageFinished(WebView view, String url) > { > > BaseClass appState = > ((BaseClass)getApplicationContext()); > appState.setUploadUrl(new String(url)); > > Intent i = new Intent(Intent.ACTION_PICK, > android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI); > startActivityForResult(i, 1); > } > > Then in the onActivityResult I'm trying to read it back out, but on > Droid phones it's NULL. Works perfect on my HTC Hero (and the > emulators). I know the url getting set is correct because I'm > checking it (I left that part out) and only show the image picker > intent if they are at a specific page. > > protected void onActivityResult(int requestCode, int resultCode, > Intent intent) { > > if (requestCode == 1) > { > BaseClass appState = ((BaseClass)getApplicationContext()); > String uploadUrl = appState.getUploadUrl(); // NULL on Droid > phones > } > } > > I added > android:name=".BaseClass" > > to the manifest. > > > On Sep 19, 2:05 pm, Mark Murphy <[email protected]> wrote: > > On Sun, Sep 19, 2010 at 2:59 PM, GregAZ <[email protected]> wrote: > > > I think I'm missing something. If I add the string as an extra to the > > > image picker intent, then show that intent, that extra is gone in the > > > onActivityResult. > > > > Correct. > > > > > Even with setResult it's still gone. This is on my > > > HTC Hero: > > > > > Intent i = new Intent(Intent.ACTION_PICK, > > > android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI); > > > i.putExtra("url", url); > > > setResult(1, i); > > > startActivityForResult(i, 1); > > > > You do not call setResult() here. That is for use in the activity that > > is *started* by startActivityForResult(). > > > > > In the onActivityResult: > > > String url = intent.getStringExtra("url"); > > > > > It's null. > > > > Correct. > > > > If you are implementing the activity being started by > > startActivityForResult(), in that activity, you can use extras with > > setResult(). In this case, somebody else wrote that activity. Extras > > you put on the requesting Intent will not automatically be copied to > > the response Intent. > > > > -- > > Mark Murphy (a Commons Guy)http://commonsware.com| > http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy > > > > _The Busy Coder's Guide to Android Development_ Version 3.1 Available! > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Dianne Hackborn Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
