Android :: Programatically Scrolling An EditText
Feb 13, 2010
I'm writing a simple caesar-encryption-activity. Two EditTexts on screen, one clear-text, one crypted.
Here's an example for the crypted EditText - the cleartext one is similar.
CODE:...................
Now when entering cleartext I have an TextChangedListener running that programatically crypts and fills that crypto-EditText. So far, so good.
When the cleartext entered gets really long, the cleartext-EditText scrolls with my imput, but the crypto-EditText stays at the top of the text. I'd really like the crypto-EditText to scroll so that it always shows the bottom line of its content.
How can that be done, preferably from the onTextChanged()-Method of the TextWatcher?
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May 14, 2010
Our app (WordPress for Android) uses a ScrollView for the new blog post view. The issue is that if a user writes a lengthy blog post in the EditText, they are unable to scroll inside of the EditText because the ScrollView seems to be taking over the scrolling action, even when you are in the EditText.
Here's the layout XML (the EditText in question is @id/content):
CODE:...............
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Apr 6, 2010
How do we set the input type for an EditText programatically? I'm trying:
mEdit.setInputType(InputType.TYPE_TEXT_VARIATION_PASSWORD);
it doesn't seem to have any effect.
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May 17, 2010
Our app (WordPress for Android) uses a scrollview for the new post view, where a user enters in their new blog post. There's quite a few fields on this view, including a large EditText for the post content field.
It appears that when an EditText is in a ScrollView, the ScrollView takes over the scrolling action, so the user can't scroll within the EditText area if they are writing a large post. What can be done so that scrolling will work both within the EditText and the ScrollView?
Here is the layout xml for this view, The EditText that needs the scrolling is @id/content:
CODE:.....................
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Jul 19, 2010
I am trying to make a non-editable EditText that is placed in a ScrollView and scrolling is controlled programmatically (when a left/right fling is detected).
Here's my simple layout:
CODE:..........
And here is my simple program:
CODE:.............
So, to explain it simply, I have two custom simplegesture classes that I attached to the EditText and the ScrollView. For the EditText, I'm trying to detect a left/right fling and when detected, I'm scrolling the it up 1 page up/down. The custom simplegesture attached to the ScrollView is to disable finger scrolling.
Here's a screen shot after a right fling was done: http://img830.imageshack.us/i/textcut.png/
I kinda works right now but I have two questions:
How do I control the scroll so that lines won't get "cut-off" (please refer to the picture above where the first line on the screen is a bit "cuf-off"). Why when I scroll the page up/down programmatically, the EditText is auto select-all (please refer to the picture above where the whole screen turns orange after scrolling)? Why when I changed MyGestureDetector to detect fling on the Y-axis (vertical fling) and programmatically scroll the EditText, it doesnt' work? It wouldn't work even if I made the change in ScrollGestureDetector too. Does it have something to do with the behaviour of the ScrollView?
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Jun 14, 2010
I have a long scrolling list of EditText items created by a SimpleCursorAdapter and prepopulated with values from an SQLite database. I make this by: cursor = db.rawQuery("SELECT _id, criterion, localweight, globalweight FROM " + dbTableName + " ORDER BY criterion", null); startManagingCursor(cursor); mAdapter = new SimpleCursorAdapter(this, R.layout.weight_edit_items, cursor, new String[]{"criterion","localweight","globalweight"}, new int[]{R.id.criterion_edit, R.id.localweight_edit, R.id.globalweight_edit}); is.setListAdapter(mAdapter); The scrolling list is several emulator screens long. The items display OK - scrolling through them shows that each has the correct value from the database. I can make an edit change to any of the EditTexts and the new text is accepted and displayed in the box. if I then scroll the list far enough to take the edited item off the screen, when I scroll back to look at it again its value has returned to what it was before I made the changes, ie. my edits have been lost. In trying to sort this out, I've done a getText to look at what's in the EditText after I've done my edits (and before a scroll) and getText returns the original text, even though the EditText is displaying my new text. It seems that the EditText has only accepted my edits superficially and they haven't been bound to the EditText, meaning they get dropped when scrolled off the screen. Can anyone please tell me what's going on here and what I need to do to force the EditText to retain its edits?
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Nov 16, 2012
how can i stop the index-alpahbtical section or the scrolling-bar when i start search using edittext. i used Intent to pass the value of edittext to the scrolling class and check if not empty scrolling.hide() ,but i got error massge and can't work,
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Jan 15, 2010
Adding an image on EditText works fine. However, copying an image is another problem. When I insert an image on EditText by using ImageSpan it shows correctly, but I copy inserted image, EditText shows me only 'obj'.
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May 17, 2009
I want an EditText to look like TextView but still behave like EditText. I've tried applying TextView style to my EditText in my layout.xml file, like this:
CODE:............
But I get an error within xml editor: "Error: No resource found that matches the given name (at 'style' with value '@android:style/ Widget_TextView')." It is strange because @android:style/ Widget_TextView definitively exists - I double checked it in code via android.R.style.Widget_TextView. Another strange thing is that I don't get android:style offered in the xml editor while typing? There is android:id, android:text and everything else.. but not android:style?
I consider the hard way (making EditText look like TextView) to be: extending EditText and overriding it's onDraw method.
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May 26, 2009
I am using an EditText. Is it possible to have a part of text uneditable and the rest editable in the same EditText?
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Jul 29, 2010
Every time I put a TextView before an EditText element in a LinearLayout, the EditText does not show. When I don't, it does.
I've narrowed the problem down to the TextView's layout_width attribute. If I give it "wrap_content", it works, but doesn't "block" down, and it appears on the same line as the EditText.
CODE:...........
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Jun 24, 2010
CODE:............
I have this at the top of my application. When the application starts, the EditText is orange highlighted and has a cursor in it; when the EditText is tapped, the soft keyboard pops up. The user uses it to type into the EditText.
However, when they click the Button, my onClick method fires and does everything it's supposed to, however the soft keyboard stays on screen and the EditText is still highlighted with its cursor.
I also have, at the top of the Button onclick: findViewById(R.id.name).clearFocus();
In spite of this, the EditText does not seem to clear its focus. How do I make the button actually act as if it is submitting the form?
Also, I do not transition to a different Activity on the click of the Button. I suppose that is the typical case, and probably the reason why they don't bother hiding the keyboard. However I want to keep the search box and button at the top of the screen, so I just dynamically fill and add views to the screen when the Button is pressed. How can I achieve my desired behavior?
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Jan 20, 2010
I have an application I wrote for Android (lat's call it MyMainApp).
My contractor wants me to write another utility (service) to periodically check his website for newer versions of MyMainApp, and if there is one - download it and install.
I know this is handled by the Market app, but my contractor wants to do it in his own utility (he does not want the user to be bothered with the update process).
Of course - the user will be notified and agree to this feature. Can this be done?
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Aug 28, 2010
It seems like every example I can find of switching between Activity's involves creating an Intent and passing in the context of a View via an OnClickListener associated with a button.But what if you just decide you need to switch Activity's? In my case, a Preference value is causing an Activity switch. How do you create an Intent that can cause an Activity switch without an associated OnClickListener?
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Apr 19, 2010
Is it possible to clear a notification programatically?I tried it with the NotificationManager but its not working.Is there any other way i can do it?
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Jan 8, 2010
I have a little problem with a ScrollView.I have a layout for an activity which is made with a ScrollView. This scrollview contains two ListViews.<?xml version="1.0" encoding="utf-8"?>
<ListView android:id="@+id/accountsListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:scrollbars="none" />
<ListView android:id="@+id/cardsListView"
android:layout_width="fill_parent"
android:layout_height="wrap_content" android:scrollbars="none" />
</LinearLayout>In onCreate method of my activity I compute ListViews height according there contents.During execution, on activity launch, ScrollView is already scrolled a bit.So I tried, at the end of onCreate to call method scrollTo(0, 0), but it does not change anything.
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Jul 10, 2009
I have To set Wall Paper In application by writing the code programmatically. when i press the Grid view Image will get full screen ..... that image i should keep as a wall paper in the android mobile screen how can i do that in programatically. I have done some thing like this ....is it correct or any other way to do it.
CODE:...............
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Dec 14, 2009
I want do set size (in px) of dialog based on screen resolution, so I have to set dialog size programatically during runtime.
Dialog layout is defined in xml with all standard views, so it would be nice to have better way to set dialog size than override-in top view's onMeasure(...).
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Jul 24, 2009
Are the following actions possible using the latest version of the Android API?:
Temporarily disable sending text messages
Temporarily disable receiving text messages
*Ideally, I would intercept them and queue them up for later delivery.
Temporarily disable incoming calls except from certain phone numbers
Temporarily disable outgoing calls except to certain phone numbers
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Jun 29, 2010
Is it possible to remove an application programatically? If so, shall I look at the package manager for that or is there an example some place? When a package is installed, I believe there is a broadcast message to the system saying that. Is it possible to capture that broadcast message?
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Sep 4, 2010
I have a FrameView that's created in my XML layout, and in my code, I'm trying to create a series of new ImageViews and add them as children of this FrameView. The ImageViews are small, only about 15 pixels square, and I want them to show up in various positions around the FrameView (I'm trying to implement what looks like a radar screen). I'm able to create them and add them just fine, and they show up on the screen.
However, when I try to set their margins, it doesn't seem to have any effect. No matter what I set, all the ImageViews show up in the top left corner of the FrameView, as opposed to offset by the appropriate margins. My XML layout is listed below, along with the code that generates the child views. Am I doing something wrong? How can I get the margins to show up properly? Or is there a better way to do this than by using margins.
XML:
CODE:....................
Java:
CODE:...............................
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May 31, 2010
How can we programatically push our app to run in background? I am doing one browser app. and when I am directly launching my application and clicking back key . It will show in the list of background running process.At this time Category is "CATEGORY_LAUNCHER" but at the same time if we try to run same app via third party app.and then clicking back key,its not showing in the list of background running process.Here the Category is "CATEGORY_BROWSABLE".and its not displaying in the list of running process.I noticed that the same behaviour in default android browser. But is their any way to make my app to run in background by clicking back key without killing my application?
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Aug 6, 2009
In menu.xml you can specify an icon:
CODE:.................
Whereas in code you create entries thus:
CODE:........
How in the code version do you specify the icon please?
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Sep 29, 2010
I know you need root access if you want to capture a screenshot by using a background application. However is it possible to just grab the screen content of your current visible activity owned by your process? This does not seem like a security constraint since the user has already installed your app is currently using your app. If so how does this work?
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Oct 7, 2009
I'm trying to create a TableLayout programatically. It just won't work. The same layout in an xml file works though. Tcode...
When I run this, I don't get a crash, but nothing appears. If I get rid of the TableRow instance, at least the button does appear as a direct child of the TableLayout. What am I doing wrong?
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Nov 19, 2010
I am trying to add permissions to my application manifest, so it can access other apps that the user installs at runtime. I thought the way to do this was to define a permission-tree in the manifest, and then use PackageManager.addPermission() to add permissions under that tree. However, I can't get this to work and the documentation I found wasn't conclusive. Could anybody show me how to do this by means of a simple example?
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Jun 20, 2012
i have a listview (i use a custom adapter) with 10 rows and each row has edittext how will i update the content of edittext on the third row after i edit the content of edittext in the first row.
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Mar 1, 2010
I want to change SMS ringtone programatically from a raw resource but I don't find any example to do it.
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Apr 21, 2009
We are writing an app to substitute screen/pattern lock on G1. Unfortunately, it is impossible to substitute the original screen lock app with a 3rd party one. The only option left is if we can UNLOCK the phone from a service running in the background when G1 is locked. Is it possible? Is there interface to Pattern/Screen lock? What is KeyguardManager for?
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Apr 23, 2009
How can I programatically launch Browser in my android application? And how can I do that with it opens an URL instead of home page?
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