I call WebView.clearHistory(), but I am still able to go back after doing so. I want to reuse a WebView, but I don't want the back button to allow the user to go back further than the current "session" of using the WebView. Anybody know what is the best way to handle this? I thought for sure that clearHistory() would do it.
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This is my first android device and i'm loving it... but one thing that irks me is the use, or lack thereof, of the back button.
As I am navigating menus and options in the Settings, I cannot simply go back one menu using the back key. For example, if I go to Settings->Battery Manager->Battery Profile Options and want to go back to the Settings screen, I cannot.
Pushing the back button does nothing and I can only go back to the Settings menu by going Home, then re-entering.
Another quirk regarding the back button is when reading emails. Using a regular email account such as Hotmail, I cannot simply read an email and go back to the inbox using the button.
It makes navigating the phone very tedious.
I have an activity that contains several user editable items (an EditText field, RatingBar, etc). I'd like to prompt the user if the back/home button is pressed and changes have been made that have not yet been saved. After reading through the android documentation, it seems like this piece of code should go in the onPause method. I've tried putting an AlertDialog in the onPause however the dialog gets shown and then immediately tears down because nothing is there to block the pause from completing.
View 1 Replies View Relatedi am new to android. i am showing Intent.ACTION_DIAL when my application starts..but when i clik back button it shows a activity page and again press back button it finishes the activity.i want when application starts dialler shown and if user cliks back button it calls finish() method
View 2 Replies View RelatedI looked around and although there are many related questions I didn't see one that answers my exact question:
I would like to create an app that runs in the background that provides the exact same functionality as the hard coded 'Back' button in all cases.
The reason? I (for example) have a Droid X, and it is BIG. it makes it extremely hard to use one-handed and having a swipe gesture function as a back button (like in Palm Pre for example) would greatly increase the ease of use.
as far as I'm concerned the app could just be one simple class that contains:
1) a listener for the 'back' swipe
2) a call to the physical hard button itself
Is this possible? are there built in APIs for the hard coded buttons that would allow me to call them without actually pressing them?
Again - I'm not interested in overriding the button, I'm interested in making a software call to it - or failing that, in emulating it's behavior in any and all states and other apps!
Please forgive the naivete of this post. I am a very novice programmer and really I just want to know whether this is possible before I start to devote myself to trying to build it.
First of all, maybe i went about this the wrong way in the first place. Situation is, i have a listview that when an item is clicked, it creates an intent and calls startActivityForResult() to another activity, to be able to edit the entries in the row. and that other activity after editing the required values, returns back to the calling activity, when the user clicks on a save button. The activity then uses the row Id to update the item.My problem now is that, if the user presses the BACK button instead, the application crashes. i have been looking around and see solutions like using Shared Preferences or onSavedInstanceState(), but i don't know where exactly i should be putting the code?
View 1 Replies View RelatedWhen I currently have my activity on the font of the screen, how can I make Android to 'destory' my activity when user clicks 'back' button? (i.e. onDestory of my Activity gets called)?
View 4 Replies View RelatedI have an Activity with a list that is bound to a ListAdapter reading data into a ArrayList from a database. All is well when the data is first loaded. While the Activity is open and the list is being displayed it is possible and likely that the data in the database will be updated by a service but the list does not reflect the changes because the ArrayList does not know about the changes. If the Activity is no longer in the foreground as would be the case if the user goes to the home screen and then is brought back to the foreground I would like for the Activity to not display what it did prior but rather reload the data using the ListAdapter the view is bound to. I think something needs to call finish() but I am not sure what.
This is what I have in the Activity.
CODE:.......................
In my android application i have a video list screen,a buffering screen and a videoplayer screen.
As soon as the user clicks an item from videolist screen ,he is navigated to buffering screen and then to videoplayer.
In the buffering screen i am using Async task and doing the loading process in on background process.
Now my issue is like the user if has selested a video then gets navigated to buffering screen.But if the user clicks back when he is in buffering screen then initially he is getting navigated to videolist screen but immediately after that again he is navigated to videoplayer screen.
What i would like to have is either the back button should be made disable in buffering or should prevent the player tostart if back is clicked.
I'm finding that I'm using the back button A LOT whether browsing the web or just navigating the OS. It kind of sucks because the buttons on the droid x are well, really small, and sometimes hard to press because they are so narrow and flimsy feeling. And depending on how you are holding the phone, it could be a good bit of distance for your thumb to travel or I'm finding myself having to reposition the phone in my hands just to reach the back button, which you seem to need very frequently.
Anyone know of any kind of back 'swipe' implementation ? Like some software you can install that makes it if you swipe left to right on maybe the top bar it goes back?
Instead of trying to grab the notification bar and swiping it down, simply start ABOVE the screen and swipe down. Fast or slow makes no difference.
You can swipe it back up, or simply hit the back button.
In the last few days I am having to press the back button twice when using both the stock android browser and the latest version of chrome on my rooted S3.
View 4 Replies View RelatedI need to append a new TextView to the current View whenever a user hits on a button.
View 7 Replies View Related I've been searching and looking for this answer for quite some time now. I want to display a little HTML in a webView.
When the User read the HTML, he's supposed to use the back button to go back to the previous activity. However, it closes the App.
How can I make it go back to the last Activity? It would also be ok to display a soft back button or something. Here my code...
In current activity, when user click the back key, I don't what it back to the last activity. Can I add a listener to listen to back key in current activity? When user click "back" key, it actually back to the activity I want it to go.
View 4 Replies View RelatedAfter a successful web view is loaded, now after some processing on the HTML page, I would like to return the control to the main screen. Is this possible in Android?
The control after the webview is launched, is in the browser, so after I make some ajax calls and then get a positive server side message. I would like the control goback to my Webview Activity.
I have 3 activities in my app: Activity1 -> Activity2 -> Activity3. Inside Activity3, if the user presses Back, I would like to return to Activity2. In Activity3's onPause event, I added a finish() statement. That's probably not even necessary, but I wanted to make sure this Activity gets cleaned up. This works fine.
However, while in Activity3, if the user presses Home or starts a new app (through notification bar or some other means), I want both Activity3 and Activity2 to finish. If the user returns to this app, he should resume with Activity1.
I have figured out how to do one or the other, but I can't figure out how to handle both cases, if it's even possible. Can I trap the "Back" button in Activity3 and send a message back to Activity2 telling it not to finish()? It seems like the Activities follow the same lifecycle flow (Pause, Stop) regardless of what you do to send them to the background. Just to answer the question of why I want this behavior, imagine that Activity1 is a login screen, Activity2 is a selection screen, and Activity3 is a content screen. If I press Back from the content page, I want to be able to make a new selection. If I exit via any other means (Home, notification bar), I want the user to be "logged out".
The user must login through the WebView. Of course, the session is for that WebView.But, what if I need to make REST API calls during my Android application?Those REST API calls need the session to be authenticated , otherwise those will not work. Is there any way I can attach the cookies of WebView into everything I do in Android?
View 1 Replies View RelatedZoom works without any problem, but if I select any input field the webview zooms in automatically.
How do I can prevent this zoom behavior?
set fix zoom level?
scale back to previous zoom level?
I wrote a sample application which displays some test message using webview .The Application has two activities, one activity simply contains a button, when user click on this button , it launch another activity which display the test message on a webview .
I have set setInitialScale() of webview as 150, Now the issue is like, Normally webvbiew displays the content with the scale size 150 (as I set ) but some times it displays the contents with a scale greater than 150.
I overrided the onScaleChanged() function in webViewClient.
In normal case before drawing the content on webview I am getting onScaleChanged() callback ,with the value oldscale as 2 and new scale as 1.5. When issue occurs , I am getting two onScaleChanged() callbacks before drawing the content!!! ,at first I get the onScalechange() callback with oldscale as 2 and new scale as 1.5 , after that getting another onScaleChanged() callback with oldscale as 1.5 and new scale as 2.0 and hence it draws the webview with the scale 2.0 irrespective of setInitialScale() I have given in my application.
This issue happens only in the case if I set setInitialScale() to a value less than device's default webview scale. As per my understanding ,Every device has its own default Scale for webview based on their display property like .075 for ldpi and 1.5 for hdpi etc )
In my device defaultScale for webview is 2, and I set the setInitialScale() as 1.5(150)
normaly webview reset the scale from 2 to 1.5 before draw ( That is from defult to new value ) and it works fine
But some time after changing the scale to 1.5 it reverting back to 2. and issue occurs
public class webActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
[Code].....
In My code I am displaying a AlertDialog based on some condition.
CODE:.......................
I'm trying to avoid that when a user has connected to Facebook from my webview, the next time he do it, doesn't need to put the email and password. but doesn't work. That cookie I suppose that is not valid because the user has to put his username and his password again and after login, I get a different cookie that the one I had stored. What I'm doing wrong? Is there another way to accomplish that?
View 3 Replies View RelatedI've read through the step-by-step here, and while I've found it to be the clearest set of instructions I've encountered, I still have a couple points of confusion. It sounds like by the time I get to the end of Section 2 (version 1) I will have a custom ROM installed (2Q). Now I've used Titanium Backup (I used the pre-OTA Unrevoked for su) to back up apps/data/settings. But I'm not sure what that gets me. What if I want to revert the phone to exactly how it is now? A Titanium Restore would restore apps/data/settings into the custom ROM loaded in 2Q correct?
It appears my answer is in Section 3, item 3D (NAND backup). But at what point do I do Section 3? If I've already gone through Section 2, my current ROM is overwritten by the custom ROM loaded in 2Q, so it's too late to back it up, right? Perhaps I'm making this more difficult than it needs to be, and I'm usually not a complete idiot about technology! But I'm having trouble getting my arms around some of these concepts. I see a lot of instructions saying "do this, do this, do this", but very little explanation what's actually happening when I do these things, and why I'm doing them, so I'm failing to grasp how the various pieces and actions are fitting together.
I have an app that requires user to register. I've got the app conected to PHP in my server to do the logic of register/login and so, this is not problem at all.
But, I want to keep a session of the user in local, so the user doesn't have to login again every time he runs the app.
So, I want something like this:
First time user, he opens the app, register and login. Do some stuff with the app and closes it. Open the app again, the user is recognized so he doesn't need to login again.
I only need to store an ID and a Username (both fetched from the DB in the login php method). What's the best way to do this?
I've thought about doing a custom preference, store the data in files or even a local DB (sqlite).
I have a user's name and password stored in their preferences.
How do I go about passing it back into the webview in a secure way?
I know if I do this it will work, but it just seems bad. There has to be a better way to post the variables.
webview.loadUrl("http://mysite.com?name="+username+"&password="+somepassword);
I've been looking for days and can't find anything, which make me think I'm missing something obvious.
Step 1: I am subclassing WebView and rendering html content properly. The intial content is very small with a div and image /link This is displayed in a LInear Layout along with a TextView and ListView. That is my first screen/activity of the application.
Step 2: When I click on a link on this webview, it goes through the webViewclient and expands to full screen to fit the content of the requested page.
After Step 2, I am not able to go back to my activity screen once the content is displayed. When I click on the back button to getback to my activity screen close my activity and goes to the phone's applications desktop. (i.e goes out of my application).
Step 3: In order to fix this issue, I stopped setting my own subclasssed WebViewClient. After doing this, the it seems to render the clicked page in a webView as subactivity. Now When I click on backbutton, it goes back to the activity screen. But, the issue now is, I am not catch event when a link is clicked. How can I catch click events in this case.
I need to launch the Browser from my application (cannot do the WebView - it has to be browser), and once I'm done with the browser, is there a way to close the Browser and the user back to the application programatically?
The problem is that user will probably press back or home keys to get out of the browser - back key will not work, and home key will put Browser and my app in the background.
I hopped that a button in the HTML displayed would close the browser but it seems like the Android seems to ignore that. Can anyone help?
My MAIN activity is spawning a child activity that contains a ListView. While this ListView is being populated (through an AsyncTask), an indeterminate progress bar is shown.However, assuming that I am an impatient user and I press the BACK button, the progress bar is cancelled but I am left with a blank screen. I have to press BACK one more time to go back to the MAIN activity.I would like the app to go back directly to the MAIN activity by pressing BACK only once. Can somebody point me in the right direction? I am thinking I should call finish() somewhere but I don't know where to put it.
View 3 Replies View RelatedI show to user a list of categories, he must choose one.
How to force the user to choose before pressing back?
I have an application with 2 activities, LogonAct and MainAct. LogonAct is a logon activity which I want to force the user to go through each time they return to the application. I've set android:clearTaskOnLaunch="true" on LogonAct.
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