Android :: Validate Edittext For Non Blank Input?
Apr 22, 2010
If I want to enforce a maximum length of input in an EditText field, I can use the maxLength attribute. But if I want to enforce a minimum length (in my case, simply non-blank), I find no corresponding minLength attribute. I've also looked at the various 'inputType' attributes (phone, password, etc) but I don't see anything like 'required' or 'non-blank'. I can't believe this would require a custom input filter; it's more likely the answer is so obvious it just doesn't get written down in the form I'm asking the question.
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May 4, 2010
I need to do form input validation on a series of EditTexts. I'm using OnFocusChangeListeners to trigger the validation after the user types into each one, but this doesn't behave as desired for the last EditText. If I click on the "Done" button while typing into the final EditText then the InputMethod is disconnected, but technically focus is never lost on the EditText (and so validation never occurs).
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Apr 13, 2009
I have an EditText control to accept IP address fields. Its xml input attribute allows everything else except IP addresses. How to make the control accept dotted IP quad addresses only?
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Sep 30, 2010
Is there any Java validator libraries i can use to validate text input from an android app?
i know that in spring there are validators for various different types such as checking if a value is a int, if a value is a valid email, etc etc.
Anything similar in core Java or even android?
cheers in advance. i don't want to re-invent the wheel if its already been implemented. i could always sue Java reg expressions to construct my own ones but was wondering if their was one done specifically for email formats.
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Oct 10, 2010
I found that when EditText in placing at the bottom of screen, and the activity's android:windowSoftInputMode="adjustPan", and the apps run in ldpi(240*320) mode, then when EditText has focus, the content of the activity is panned too far to the above, thus leaving a blank screen between the content of the window and the soft input panel.
You can see the screenshot of this problem at
https://sites.google.com/site/wilderwang/android
Also, the source code to repro this problem can also be get at
https://sites.google.com/site/wilderwang/android
When I test further, if the same apps run in hdpi(480*800), when EditText got focus, the content of the window panned too small thus causing the soft input window cover the EditText view. It seems the distance of the window panned not compute the screen density.
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Jun 23, 2009
i use the webkit and the EditText to compose my browser, when i key url in my EditText, if the url is too long, it will continue in the next line, i want to my input url area like ie or firefox, if the word is too long,always in one line..
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Jan 7, 2010
How do I get a Edittext with both a phone input and the ability to hide the string. I know that android:inputType="textPassword" hides the string, while android:inputType="phone" brings up a dialpad interface.
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May 26, 2010
Is there a way I can specify an input mask to the EditText control in Android?
I want be able to specify something like ### - ## - #### for a Social Security Number. This will cause any invalid input to be rejected automatically (example, I type alphabetical characters instead of numeric digits).
I realize that I can add an OnKeyListener and manually check for validity. But this is tedious and I will have to handle various edge cases.
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Jun 23, 2010
If I popup input method with togglesoftinput,my view's onCreateInputConnection was not called, and i can not communicate with input method.
And then i try to attach the input method to my view...
but it returns false
How can I force onCreateInputConnection to be called?
or
How can I make mServedView == view ?
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Jul 29, 2010
Hopefully this is just something easy since I'm still wet behind the ears with programming for android. My issue is that i have a couple EditText boxes at the bottom of my layout. When in the emulator they work as expected, you touch the edittext and the screen scrolls up so you can see the content. However when i try it on my droid inc the edittext is covered by the keyboard.
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Sep 22, 2009
I need to create a form to insert a username for my application, so I want the user to be able to insert only letters, numbers and some symbols.
I noticed that there is not a simple way to do it (while if I needed a numeric fields the implementation would be easy).
The most easy way that I found is based on the usage of the attribute "digits" of the EditText View. Hence, I inserted a string with the list of characters to be accepted (example: 1234abce).
The filter works as expected. When the keyboard appears, the user can insert only the characters that I specified in the "digits" field. The problem is that the keyboard does not accept the "Enter" key, so there is no way for the user to click/touch Enter so to confirm their Input and make the on-screen keyboard to disappear.
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Apr 12, 2010
Was going through some apps, I found out there was one application with validation, lets say we validate the data on web, similarly can anyone suggest and show a piece of code so that can get it how to do it.
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Nov 6, 2010
For example, I want to validate minumumlength, and if it's email., a phonenumer. How is this possible in android. I want to validate
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Mar 6, 2010
I'm an android developer trying to use the javax.crypto package to encrypt/decrypt my SQLite database backups when I put them on the SD Card.That way, they can't be read while they're in the publicly accessible file system.I can encrypt/decrypt the file just fine, but I have no idea how to tell if the user input the right key or the wrong key. An incorrect key just returns a more jumbled file. I need a way of validating the user's password without storing it on the device (since they could be importing to another device).How can I check to see if the file has been successfully and correctly decrypted?
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Apr 11, 2011
try {
DocumentBuilderFactory parserFactory = DocumentBuilderFactory.newInstance();
parserFactory.setNamespaceAware(true);
DocumentBuilder parser = parserFactory.newDocumentBuilder();
Document document = parser.parse(new File(SDCardManager.getSDCardManagerInstance().getB aseDir() + "/"
+ xmlName));
[URL]...
i am trying this code to validate the XML using XSD schema but i am facing an illegalArgumentException on (SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCH EMA_NS_URI. how to resolve it....
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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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Apr 22, 2010
I want to have a toast message to display "Enter numeric characters only" whenever the user presses a non-numeric key on the virtual keyboard. Any clue?
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May 8, 2010
i am developing android application website address how can implemented validation
example : www.yahoo.com
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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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Mar 29, 2010
Does anyone have sample code to validate user entered text in preferences? For example, I have a EditTextPreference for user to enter an email address. I'd like to validate the format of email address entered and pop up an alert dialog if the format isn't correct. Anyone have any sample code for this?
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Jan 6, 2010
I would like to show a custom input field (specifically, one containing only 9-0 and two extra buttons containing decimal separator (, or .) and a delete button). I could create a custom IME, but (as far as I know) that would have to be set by the user as the system-wide input method. Is there a way to implement an input method and bind it to a specific input field?
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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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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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Nov 30, 2009
What's the best practice to validate an e-mail address (e.g. from an user input field) in Android? org.apache.commons.validator.routines.EmailValidator doesn't seem to be available. Are there any other libraries doing this which are included in Android already or would I have to use RegExp?
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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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Jan 6, 2010
I am trying to populate the text of a second EditText widget with the text from the first EditText widget only when the second EditText widget receives focus, the second widget is not empty, and the first widget is not empty. When I run it and click into the second widget it does not populate. When I remove the third constraint ('etxt.getText ().toString().trim() == ""')) it works. so getText() on the second EditText widget is returning something even though the second widget has no initial value other then the text that is displayed via the hint attribute.
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Aug 24, 2010
I am trying to create a very simple help page in my app. The layout xml for the page contains only a textview that displays the help info. In the Eclipse layout view, the layout looks perfect... however, when i try to load it in the emulator (via an OptionsMenu) it comes up as a blank black screen.
Here is the Code:
CODE:.....
AND the layout XML...
CODE:................
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Aug 11, 2010
I have a Telus HTC Desire and I'm trying to put Barnes Noble's ereader on it. When I go to the market and search either BN reader or Nook it comes up blank...it's supposed to be there. Is anyone else having this issue? Does anyone have the installer file?
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