Android :: Setting Global Button And EditText Objects
Jun 26, 2010
I'm getting null pointer exceptions when I try to initialize Button and EditText objects in global scope, can't figure it out. I've commented out everything but the bare minimum for the app to display my layout, but this still causes a crash: private EditText addmoney = (EditText)findViewById(R.id.addmoney);
R.id.addmoney definitely, definitely exists. So what the heck? Is it impossible to declare EditText in global scope? I need to be able to call it from both onCreate and onPause in a class extending Activity, is there maybe another way I should be doing this
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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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May 21, 2010
my activity shows help dialog when it starts but as soon as i click the click search button on the phone, search dialog appears and my dialog goes away. i can ignore the search key in my activity like below but it is still working when i have any dialog on top................
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Feb 22, 2010
After the following two lines are executed, the text is shown on the left side of the EditText, and the cursor is also on the left edge. While I wanna show the text on the right side of the EditText, and move the cursor to the end of the text. code...
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Nov 17, 2010
I am developping an android app which downloads an xml and displays a layout with a number of edittexts, checkboxes, spinners, etc. added dynamically like this:
LinearLayout ll = new LinearLayout(this);
EditText nameField = new EditText(this);
ll.addView(nameField);
ScrollView sv = new ScrollView(this);
sv.addView(ll);
setContentView(sv);
I'm having trouble with setting some properties to an EditText added this way. For examle android:maxLength attribute can easily be set in an xml layout but I found no method to do the same in the java code. How can I do it when hawing to add dynamically?
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Oct 26, 2010
The FAQ mentions a method of passing objects around activities. (It is not clear to me): "A HashMap of WeakReferences to Objects. You can also use a HashMap of WeakReferences to Objects with Long keys. When an activity wants to pass an object to another activity, it simply puts the object in the map and sends the key (which is a unique Long based on a counter or time stamp) to the recipient activity via intent extras. The recipient activity retrieves the object using this key.".................
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Jun 15, 2010
I have an application that have a Google map on Google Android 1.5 since we have been working on the application for a long time, we are not in stage of upgrading to the newest framework, so we are using 1.5. Now, I have map locations that are dynamically generated and drawn on the map at run-time to visualize some streams, Up to this point the application is working fine, Now my problem is that I am trying to filter the objects ( addresses) to visualize only the on-screen ones. I do NOT want to visualize the addresses that are off-screen. The way I am trying to do this is to check the screen-coordinates of each object (address) before visualizing it, then it the coordinates (x,y) more than (0,0) and less than (320, 460). I should visualize it. I am trying to use this approach, but it is not working for some reasons, I have tried many posts but could not understand why, there must be something missing somewhere that I am not aware of.
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May 10, 2010
I want to make the edittext width the same size as button. My EditText is currently very small. I use relative layout.
<TextView
android:id="@+id/aha4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="17dip"
android:text="Vzdevek:"..............
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Aug 26, 2010
I am 99% there. I need to have a Edittext beside a Search button. The EditText should fill as much of the width as possible, the button should be to the right and be just big enough to have it's text
It looks like this now:.................
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Jun 1, 2010
In some apps I see an EditText widget combined with a Button on the right side (e.g. the search field in the twitter app). How can I create a widget like that?
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Mar 10, 2010
I've put an EditText and Button into a horizontal LinearLayout but unfortunately the button is not aligned with the text field. In the Hierarchy Viewer the text field has a absolute_y of 30 while the button has 32. Please see screenshots of the Hierarchy Viewer here: http://picasaweb.google.com/sj1981/Android
The XML looks like this:...................
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Nov 10, 2010
I have this EditText and Button, and I have to reduce its height. I try with android:height="10px" but it doesn't work. Btw android:width="180px" works OK, then I don't know why I can't adjust the height.
Here is the code:....................
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Aug 18, 2010
i have an EditText and a Button in my LinearLayout and i want to align them closely together so they see seem to belong together (edittext + micButton for speech input). Now they don't have the same height and they aren't really aligned well (button seems to be a little lower than the EditText). I know I can apply a negative margin like -5dip to make them come closer together, but is there perhaps a better way to do this? Set them in a specific container/layout so that they will automatically have the same height and no margin between them?
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Jul 17, 2010
How do you replace the "smiley" button with a return key in an EditText?
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Jun 5, 2010
I have 2 EditText01 and 02. My button will be disable once the activity is started. And when these two EditText box got text inside, the button have to be enabled back. However my button is always disable and can't enable back using, button.setEnabled(true);. code...
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Sep 19, 2011
i have 2 button's on my screen, i need that when i press button2
the EditText will appear on the button1 and when i'll press button2
again, the EditText will disappear.
is there any way to do it on java for android ?
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Jun 25, 2010
In emulator, size of edittext and button looks nice but in motorola milestones, both of them are so small. I think there are different types of screen layout. Is it possible to adjust the size automatically?
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Oct 8, 2010
I have edittext and a button below edittext. edittext has width as fill_parent and height as wrap_content.
My messages covers full screen, due to this my button is not visible it hides below virtual keyboard
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Jul 4, 2010
I have a setup view where the user can enter their name and email and click done when they are finished which navigates them to another activity1. When they are in activity1, and they hit the soft back button on the phone, it takes them screen where they entered their name and email. However, the name and email EditText fields are blank. In the view where the name and email are entered I looked to see if onStart, onCreate, OnPause, onResume,... where being called after the back button was hit, but they are not. Do you know how I can make it so that the EditText fields have the information that was previously entered.
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Sep 6, 2010
how to set a TextView's default text to whatever I edit in the EditText..In Lamence terms..
Default Text <---Label
[Default Text] <---Text Box
[Change] <---Button
If I change the information in the Text Box, it will change the Label on the Change Button click..Now, it will change the text to 'false'..Here's my Main.java:
Code:
package com.testapp.android;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
[code]...
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Nov 7, 2010
I have a button defined in my XML file. The button works exactly like you would expect...that is until I add the line at the bottom (android:background="drawable/leftarrow1"). Then the button is no longer click able in the activity, but the new background shows up like I want. What gives?
<Button
android:id="@+id/switch_left"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_center Vertical="true"
android:background="@drawable/leftarrow1" />
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Mar 25, 2010
I am getting an error from Eclipse when I use this xml file (res / drawable/btnswitch.xml) to designate different button conditions
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="@drawable/btn_st_rd" />
<!-- pressed --> <item android:state_focused="true"
android:drawable="@drawable/btn_st_gr" /> <!-- focused --> <item android:drawable="@drawable/btn_st_gr" /> <!-- default --> </selector>
I call it in my layout file with this code:
<Button android:id="@+id/startTimer_btn" android:src="@drawable/btnswitch"" android:layout_width="wrap_content" android:layout_height="fill_parent" />
Eclipse says it can't run the configuration because I have errors but does not show any errors. And when I remove the xml code (to go back to my original code which just sets a background image for the Button) it says that now has errors. I have to restart Eclipse to get the original code to run again.
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Aug 31, 2010
In my Android project,I've a image button whose background is set to some image.I want so set some text on the image button.How do i do that?I want to set the text because localization would be used in the project.
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Jun 15, 2010
I am creating a button widget with icon and text. Single word text is getting divided into two lines. There is enough room on the screen for the button widget to grow. But it still wraps the text to next line. How do I force it to be single line ? This is how I setup th button widget. <Button android:id="@+id/delete" android:text=" @string/delete" android: drawableTop="@drawable/ic_menu_post_delete" style="@style/ OnScreenActionIcon" />
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Oct 15, 2010
I am working on layout in android XML in which I would like to set a buttons height to match it's width when setup to fill parent. Obviously this number will change based on screen size, so I cannot use a set pixel size. Can someone help me with getting the button width based on screen size and then passing that to the height setting?
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Oct 9, 2010
How can we on or off GPS and 3G by clicking on button without going on setting screen in android?
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Apr 2, 2010
I have a bunch of EditTexts in my Android application, each with InputMethod set to numberSigned. My target device does not have a hardware keyboard and thusly uses the software keyboard for numeric entry. Android attempts to be user-friendly and replaces the standard "Done" button to the right of the entry box with a "Next" button, probably because it recognizes the presence of other EditTexts My application does not need this functionality, and in fact impairs the functionality of the application. How do I remove or disable that functionality?
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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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Jan 14, 2010
Was wondering if anyone else noticed that under settings/aboutphone/systemupdates there now is a update android button. Don't know if it's cause I modified to the ze08.3 kernel, anyone else have this ?
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