I have an Activity that I have already implemented sometime ago.
It involves around making a in app purchase, so all the logic is relatively self contained. it doesn't need to care about anything else.
Now, i wish to make that Activity to optionally show up in a dialog in some other activity. Is there a quick way to do that? I still need to keep the old behavior however, where the activity show up as a regular screen.
So is there someway that I could launch the activity with that make it show up as a dialog?
Thanks
You cant show activity as dialog.
Your options are:
1: Open the other activity with some boolean extra like "showDialog", true
Intent intent = new Intent(this, OtherActivity.class);
intent.putExtra("showDialog", true);
and in the other activity in (for example) onCreate:
Boolean showDialog = getIntent().getExtras().getBoolean("showDialog");
if (showDialog) {
// Code to show dialog
}
2: Create a DialogFragment and show it in your original activity. This custom DialogFragment you can use on both activities
https://guides.codepath.com/android/Using-DialogFragment
Probably your cleanest option depending on how complex your Activity is, is to create a new DialogFragment based on your current activity.
A DialogFragment is basically a Fragment, so has a relatively similar set of lifecycle callbacks to your Activity so it shouldn't be too difficult to re-work as a DialogFragment.
If the in-app purchase framework has specific callback requirements with an Activity then you will need to take that into account.
Another separate option would be to mock the appearance of a Dialog, by creating an Activity that may be transparent around the border of the main content.
Just Inflate the layout one button click on onCreate Method.
WhAT I WILL SUGGEST IS try alert box and in place of normal layout inflate you activity layout .
these might help
The easiest way to do that is to apply a dialog theme to the activity:
<activity android:theme="#style/Theme.AppCompat.Dialog" />
Or in the code:
#Override
protected void onCreate(Bundle savedInstanceState) {
setTheme(R.style.Theme_AppCompat_Dialog);
super.onCreate(savedInstanceState);
setContentView(R.layout.test);
}
You can customize parameters of the theme in styles.xml, e.g. dim enabled/disabled, click outside behavior.
The crucial point is to perform setTheme() before super.onCreate(), because Theme is immutable, once set through super.onCreate() it cannot be mutated later.
Related
The situation is this. I have a subclass of activity at the end of a long inheritance chain that I cannot change. so I cannot make my activity extend FragmentActivity. I wish to display dialogs without leaking them when rotations and such happen.
Google suggested mainly the (now deprecated) dismissDialog(int). The deprecation messege suggests using fragments for dialogs. which makes sense. But as I said I cannot extend FragmentActivity and so cannot get the fragmet manager to launch my dialog fragment. I'm also targeting min sdk 9 and would like to avoid using deprecated methods.
One solution I thought of was calling start for result on a dummy FragmentActivity to show my dialogFragment. but that seems to defeat the porpuse of dialogs entirely.
Is there any hope at all ? Can I somehow launch a dialog fragment from a non fragment activity ? Can I show and dismiss dialogs in a non deprecated way ? Any other alternative I missed ?
Well I would advice you to fix everything and extend FragmentActivity. But Anyway since can not be done without a FragmentActivity, here is a work-around
Create a FragmentActivity that is invisible (pretty easy with a translucent theme)
Start this activity to handle dialogs inside it.
Finish it when dialogs are dismissed or so.
I've finally procedded to manually handle my dialogs. which means:
Dialog currentdialog; // holds the current open dialog
#Override
protected void onSaveInstanceState (Bundle outState){
super.onSaveInstanceState(outState);
...
if(currentdialog!=null){
currentdialog.dismiss();
}
}
public void makeDialog(){
AlertDialog.Builder alert = new AlertDialog.Builder(this);
// set some of the dialog fields
currentdialog = alert.create();
currentdialog.show();
}
It will work:
CustomFieldsDialog customDialog = new
CustomFieldsDialog();
customDialog.show(getActivity().getSupportFragmentManager(),
"CustomFieldsDialog");
[Update Solution]
Referring to the post in the link
ViewPager PagerAdapter not updating the View
public void onSomeButtonClicked(View view) { // registered to Button's android:onClick in the layout xml file
Log.w(TAG,"Some button clicked !!");
getIntent().setAction(IntentManager.Intents.ACTION_SPAWN_LIST_BY_SOMETHING);
mViewPager.getAdapter().notifyDataSetChanged();
}
// And inside my PagerAdapter
#Override
public int getItemPosition(Object object) {
return 0;
}
Fixed all my problems, i just used Intent.setAction().
[Update to below Post]
My problem is i have a ViewPager PagerAdapter in my Main Activity. On clicking one of the 3 buttons., any specific intent will be fired (i used intent, i could have gone with just State variable as well, just that i pass some Uri with the intent). What happens is., i do
public void onSomeButtonClicked(View view) { // registered to Button's android:onClick in the layout xml file
Log.w(TAG,"Some button clicked !!");
getIntent().setAction(IntentManager.Intents.ACTION_SPAWN_LIST_BY_SOMETHING);
mViewPager.getAdapter().notifyDataSetChanged();
}
This is why i was guessing maybe i should just do startActivity again, with the new Intent Action on the same Activity.
Spawning a new Activity, i would have to redraw every other view in the layout which is basically the same code, for the most part in the current activity.
Any suggestions here? Please help
[Original Post]
I have a PagerAdapter and 3 Buttons in the my Main Activity. This activity is enter from Main Launcher.
When i press any one of the buttons, the Intent Action is changed.
My question:
The changed Intent action reflects some changed view in the ViewPager and does_not spawn a new Activity as such, only the view is updated.
What approach should i take to get this task?
Can i start the currentActivity using startActivity() and different Intent actions on button click?
or is there any other efficient way in android to do this?
[No need code, just explanation of logic / method would suffice]
Thanks in advance
If you are saying that you are trying to use startActivity to bring up the same activity again, and its not working, it could be because you set something like singleTop in your Android manifest.
If you are asking whether or not you should use an intent to change the state of your Activity, then the answer is "it depends". If the user would expect the back button to return your app to its previous state (instead of going back to the home screen), then it might be a good choice for you. If that is the case, however, I would ask why not just make 2 different Activities? Otherwise, just do as Dan S suggested and update the state of your Activity as the user interacts with it.
You can always use the onNewIntent() hook. Do something like this in your activity:
protected void onNewIntent(Intent intent){
//change your activity based on the new intent
}
Make sure to set the activity to singleTop in your manifest. Now whenever startActivity is called the onNewIntent() will be executed. Also, note that per the documentation:
Note that getIntent() still returns the original Intent. You can use setIntent(Intent) to update it to this new Intent.
I'd like to recreate a functionality similar to a Swing GlassPane to be able to display animations while the user uses the app "below" normally. I cannot simply create a separate layout and attach it to each activity since the animation state would be lost when switching activities.
Is there a way to keep a persistent view over all the activities of an Android application ?
Thanks.
No its not. Every Activity runs in its own thread and is by design supposed to be runnable standalone.
But you could persist the animation state into the DB or into sharedPreferences and start it over at the new activity.
What you could also do is to use a Spinner or another control instead of seperate activitys. Then you could have a persistent view.
why not think in a TabActivity?
hi! i do this before with a TabActivity, never with an only activity, always with many activitys wich i started, get theirs windows and setting as my TabActivity window´s decor view... i dont tested the code below, since is an idea, but maybe more lately (when i'll be on home) i'll write an example...
So, my idea...
a TabActivity is composed by a TabWidget and a FrameLayout where the activity´s windows is allocated.
the TabWidget can be any view, so, you can put the animated view here.
the most difficult thing is the fact that, if you start an activity from the TabActivity´s child, then the new activity will be on top of the TabActivity. In order to overrides this behavior the TabActivity must know when a nested activity wants to start another activity. When this happens the TabActivity must clear his decor view (with the old window activity) and put the decor view of new one. Something like this:
on the child activity, launch a new activity when we click on a button:
... on click listener...
((MyTabActivity)getParent()).createNewActivity("NewActivity", NewActivity.class);
now, we´re saying the TabActivity that it has to start a new activity, get the new activity decor view and put that view inside the TabActivity decor view... so, the createNewActivity will perform something like this:
public void createNewActivity(String activityId, Class<?> class1) {
Intent intent = new Intent( getIntent().getAction() ).setClass(MyTabActivity.this, class1);
Window wList = getLocalActivityManager().startActivity(activityId, intent);
getWindow().setContentView(wList.getDecorView());
}
hope you understand me.
i'll write an example later
In my app when i do some long work i'm using a Progress Dialog while the work isn't finished.
I'm looking for it in every place but without sucess. Everything that i founded is all about saving user interface elements states.
Then, i would like to know how i can save progress dialog state correctly ?
I want this working because when the orientation screen change the app crashes.
Shoul i use onSaveInstanceState() method ? How ? I try using saving as a bundle but without succes...
Any advice would be nice...
thanks
I think, your dialog crashes on orientation change because you are not using
#Override
protected Dialog onCreateDialog(int dialogID, Bundle args)
and
showDialog(dialogID);
to show your dialog.
I had the same problem with an alert dialog. As I see it, if you don't create dialog that way, it becomes linked to your activity, and when activity is dead, the system finds that a dialog still try to access that dead activity, not new one.
You need to add this to the manifest file for the activity in which you are showing the dialog:
android:configChanges="keyboardHidden|orientation"
to handle the screen orientation you must use onRetainNonConfigurationInstance()
you can find a more extensive explanation about screen orientation here: Faster Screen Orientation.
The way I do this in my applications is overriding the onConfigurationChanged() method in the Activity like so:
#Override
public void onConfigurationChanged(Configuration config) {
//Just switch the layout without respawning the activity
super.onConfigurationChanged(config);
}
This hasn't given me any issues as of yet and my Activity doesn't reload or restart when the orientation is changed.
I have a class that extends android.app.Dialog, the layout is done in an xml file, and the setup (button listeners, etc) is done on the onCreate method. My problem is that whenever the dialog is displayed, then dismissed, and displayed again, the Editable TextViews are still populated with the information that was displayed previously. What is the common way to clear these text fields? Remember - this is a separate class that extends Dialog - so there is no 'onDialogCreate' like Activity has.
Or, perhaps I am extending the wrong class? There is just a lot of processing being done, and do not want to have all the code in the main Activity. I would like it to be in a separate Class. I tried to extend AlertDialog, but it does not create the border like Dialog does. Any help would be great.
The dialog is shown via the Activity:
protected Dialog onCreateDialog(int id) {
switch(id){
case DIALOG_NEW_SAFE:
return(new NewSafeDialog(this));
default:
return(null);
}
}
onCreateDialog(..) caches the dialog which means the same instance is reused.
3 ways to fix the undesired behavior off my head:
Override onPrepareDialog(..), use findViewById(..) to get whatever you want to clear, clear it.
Don't rely on managed dialogs at all, do new NewSafeDialog(this).show() each time you want to show the dialog.
Add onCancelListener(..), onDismissListener(..) inside your custom dialog that would call a method to clear itself.
The good way to create a dialog is by using showDialog() as you did so don't change it.
The good and easy way to force deletion of a dialog in order to make your creation code recalled again is:
void removeDialog (int id)
So if you simply do the following, it's gonna work ;)
removeDialog(DIALOG_NEW_SAFE);
showDialog(DIALOG_NEW_SAFE);
Try clearing the text in the constructor of the NewSafeDialog i.e. your dialog class.