Android :: Implement Color Selector Of TextView When The OnClick Listener Is Set On Its Parent Layout?
Aug 8, 2010
The layout xml is as below. I have a RelativeLayout, which contains a TextView. The OnClick listener is set on RelativeLayout. The RelativeLayout has a selector background. What I want is, when user clicks on the RelativeLayout, the background of the RelativeLayout should change, and the color of the text of the TextView should change too. Even though I set color selector for the TextView, only the selector on RelativeLayout works. The color selector on TextView doesn't work. How can I implement change of both RelativeLayout background and text color of TextView when user clicks the layout?
CODE:...................
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Aug 28, 2010
I'm attempting to change the background color of an Android TextView widget when the user touches it. I've created a selector for that purpose, which is stored in res/color/selector.xml and roughly looks like that:
CODE:................
The clickable attribute of the TextView is "true", in case that's of interest.
When I assign this selector to a TextView as android:background="@color/selector",
I'm getting the following exception at runtime: ERROR/AndroidRuntime(13130): Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line #6: <item> tag requires a 'drawable' attribute or child tag defining a drawable
When I change the attribute to drawable, it works, but the result is looking completely wrong because the IDs appear to be interpreted as image references instead of color references (as the "drawable" suggests).
What confuses me is that I can set a color reference, e.g. "@color/black", as the background attribute directly. This is working as expected. Using selectors doesn't work.
I can also use the selector as the textColor without problems.
What's the correct way to apply a background-color-selector to a TextView in Android?
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Oct 17, 2010
Can I modify android.R.layout.simple_list_item_1? For eg., I want to change the text color of the textview inside the listview dynamically. For this, I need to get to the textview and change its color.. How can I do that?
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Jun 25, 2010
Is there a way to have 1 onClick Lister for many buttons where I can toss a case statement to do things based on what buttons were clicked.
I know I can make 100 different listeners for 100 buttons but I have to think I can create some nifty variables to do it in less lines of code.
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Jul 27, 2010
This should be a simple question because I couldn't get the answer from Google . I have ListView in a LinearLayout . I need to handle the click event to allow user click on the LinearLayout to trigger some function. I try to add onClickListener to the LinearLayout , and it works only when I click outside of the ListView . How do I let the click event on ListView propagate automatically to be handled by the Listener of the LinearLayout?
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Nov 14, 2010
In my layout xml file I have set the android:onClick attribute for a Button element to a function in my activity. So when I click the button the function is called with a View as its argument. Are there any information in that View argument that has the id of the button being clicked? I'm trying to figure out if I have to have one onClick function for every element or if I can use one function and switch depending on the id of the element being clicked.
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Aug 17, 2010
I used two image button for Next and Back and i used onclick event for those button i want to which image button fire on onclick and run particular function for next or back in onclick event how will i get which image button fire or onclick event at runtime.
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May 15, 2010
I'm creating my first widget and ran into a snag. I have several buttons on this widget and need a way to register an onClick action for each of the buttons. So far I've only found examples where they start a configuration activity from a widget button. Does someone have example code on using buttons in home screen widgets?
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Sep 1, 2009
I have a DialogPreference in my Preference Activity and would like to know which button was pressed. I have implemented the OnSharedPreferenceChangeListener which does not seem to get triggered when the DialogPreference is selected. I have also tried OnPreferenceClickListener but this gets triggered as soon as the DialogPreference is clicked from the main screen and not when one of the actual dialog buttons was pressed. I think I need to implement onClick for this dialog but I am not sure where to do this. I have looked at the API Demo code and it shows how to create the dialog but not how to determine which button was pressed.
public class Preferences extends PreferenceActivity implements OnSharedPreferenceChangeListener {
private static final String LOG = "test"; private DialogPreference mfactory;
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ....................
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Nov 26, 2009
I am working on a Widget which will get the Current GPS location and pass this value to remote PHP page to get the Information and display it in the Widget. This is what I am trying to do.I am facing problem while implementing Location Listener for appWidget. It is not updating with the Current Location and It is showing the initial widget i.e "Loading Widget"(Here I put this text)
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Oct 11, 2010
I have a custom class called "Sound" with SoundPool, I want to implement the loading complete listener so that my activity can play an intro sound and display the "start" button once loading is complete. How would I go about implementing the listener and then testing for the complete status from my activity to make sure everything is loaded then go on to do the above. MyActivity creates an instance of my class "Sound" so that it can call various sound methods from it. Code...
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Nov 17, 2010
I am developing an application,In my application i am display images using ImageView from url using xml parsing,i want to display zoom image,when i double touch on the Image,then again double touch on zoomImage,i want to reset image.How to implement in image using andorid..
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Jan 10, 2010
I have 2 questions regarding a ListView in Android:
How can I get the color of the listview's focused row ? I tried to use the ListView.getSelector() method, which according to its documentation should give me what I'm looking for, but it's giving me a Drawable object which I don't know how to retrieve the color from (if possible...).
How can I set the color of the listview's focused row ? Here I tried to use the setSelector() method on the listview, passing it a ColorDrawable object, but the result of doing it is that the whole background of the list view is painted in that color... and this is not what I wanted of course...
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Jul 15, 2010
I have a simple ExpandalbeList. For the group header view, I'm using a simple TextView, I am setting the background of the text to a drawable. I have the textview parameters set to FILL_PARENT, but the background of the TextView only covers the width of the text. I realize that I can put this all inside of a Linear Layout, but that just seems like a waste. isn't there a way to make the bounds of the text view stretch to the edge of the listview?
CODE:..........................
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Sep 21, 2010
I'm trying to use a color defined in a stlyle in a selector but it is causing a Resources$NotFoundException.
First I added a new attribute to attr.xml:
CODE:..........
Then I defined that attr value in styles.xml:
CODE:..........
Then I tried to use that attr in my selector definition:
CODE:................
Lastly, the activity uses the ThemeNoTitleBar style theme in the manifest.
I've also tried creating a color in colors.xml and having it use the new attr but that also fails.
I'm obviously missing something but am not sure what to do to fix it. My intent is to create multiple themes and have the selector use the color in the currently selected theme.
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Jul 22, 2010
I specified a selector drawable for the background of a layout as below, so when user clicks on the layout, the layout will have a different background. But, I didn't specify color selector for the TextViews in the layout, because there are many TextViews with different colors and I am too lazy to define color selector for them. So the text color keeps the same when the layout is clicked. My questions is, is there an automatic way to specify that the text color is highlighted/changed when the layout is clicked, so I don't have to define color selector for each of the TextViews in a layout?
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Oct 17, 2009
I have a TextView inside a LinearLayout. The LinearLayout is able to receive focus, and I want the textColor of the TextView to change when it does. I thought using a ColorStateList would work, but it would seem that the TextView does not receive focus when the LinearLayout does. I know that, because I have tried this code...
And nothing gets logged. I don't want to use an OnFocusChangeListener on the LinearLayout to change the textColor of the TextView, I think this has to be done from XML. The reason for that is because in another activity I have an ExpandableListView with a custom adapter and custom views and Android changes the textColors of the TextViews (from light to dark) inside my custom views when items are focused.
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Jul 24, 2010
It seems that a TextView inside a LinearLayout forces that LinearLayout to be larger. I am trying split my screen top 50% and bottom 50% and also the bottom 50% is split into 3 parts. So I did my weights 3 (for the top), and then 1, 1, 1 (for the bottom) for a total of 6.
Here is what it looks like. http://i.imgur.com/3FJSW.jpg
As soon as I take out the TextView inside the first LinearLayout the splits are proper. The moment I put the TextView inside the top LinearLayout the top LinerLayout gets larger by the amount of the the TextView.
Here is my code:
CODE:............................
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Feb 18, 2010
In android, when I press on a TextView, the text changes color (from white to grey). how can I disable that functionality?
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Nov 4, 2010
I have a TextView in my home screen widget. Can I use the following selector as the background of the TextView so the TextView can be highlighted when clicked? I know I can do it in Activity, but I am not sure about home screen widget.code...
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Sep 9, 2010
This is going to be a bit lame question. I have the following code:
CODE:.....
I have a TextView in my xml layout file. I'd like to get it and change my text when I click this button.
But I can't get it (the TextView) unless I make it as a value of a static member of this class and pass it to the constructor. I believe I am missing a big point here, so i'd be very thankful if you could explain how this is meant to be done ?
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May 11, 2010
How can I create 3 equally wide TextView which fill parent across the screen? I tried doing this, but the width of the TextView are different: it is 149, 89, 89.
CODE:...................
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Mar 2, 2009
I am trying to get those nicely looking android list dividers above and below a TextView. This is how far I am. code...
The ImageView makes what I want - a scaled to fill the parent separator, but this is somewhat not an ideal solution. The android:drawable* in the TextView do not scale to fill the parent - any ideas how to achieve this?
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Oct 12, 2010
I have three buttons defined in xml
CODE:..............
In Java one way to listen to them is:
CODE:.............
For second btn , same code has to be repeated with different id? How can I make it generic enough that , it can listen to all buttons (say in for loop) and while handling I should be able to differentiate different btns. (may be get elements id)
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Nov 15, 2010
I have a ListView whose rows are formatted by me. Each row has a mix of ImageView and TextView. I have also implemented my own adapter and am able to draw each row through it.
Now, I would want something like this-
User clicks on an ImageView (not anywhere else on the row, but only this ImageView should respond to clicks)
I get to know the position of the row whose ImageView was clicked.
I have tried many things for this and have wanted my code to be as efficient as possible (in terms of overkill).
Currently i can capture the click event on that particular ImageView only, but I can't know which row was clicked.
I have provided an attribute in the Row XML like this-
CODE:..................
And in my code, I have a method like this:
CODE:..............
I can get the parent row (perhaps) but am not sure how to go further from here.
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Oct 9, 2009
GridView is not behaving like it is supposed to.
This screenshot shows that the GridView (in landscape mode) is flushed left.
I want it centered. This is the XML layout for the GridView.
<Linear Layout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/templatelandscape"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<GridView
android:id="@+id/commandsbarlandscape"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:layout_alignParentTop="true"
android:layout_centerInParent="true"
android:padding="0dp"
android:verticalSpacing="2dp"
android:horizontalSpacing="2dp"
android:numColumns="auto_fit"
android:columnWidth="52dp"
android:stretchMode="spacingWidth"
android:gravity="fill_horizontal">
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Jan 19, 2010
after figuring out the earlier question 'Layout Question', now my OnItemClickListener, and ItemLongClick Listener(ContextMenu) have stopped working. With just the TextView it works fine Anyone have any ideas as to why this would stop working?
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Jul 2, 2010
In my project whenever I extend activity it works fine but as soon as I extend ListActivity it throws exception and shows file not found. Why is that? We already know that ListActivity itself extends the Activity class. The application must run fine.
Here's the java file:
package com.android.feedGrabber;
import java.net.URL;
import java.net.URLConnection;
import java.util.Collection;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
import com.sun.cnpi.rss.elements.Item;
import com.sun.cnpi.rss.elements.Rss;
import com.sun.cnpi.rss.parser.RssParser;
import com.sun.cnpi.rss.parser.RssParserFactory;
If I change "extends Activity" to "extends ListActivity" it gives the exception. I need to bring this change because I want to implement it on ListView instead of TextView.
Error it throws:
debug mode gets active and it highlights under Suspended(exception RunTimeException): ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2663.
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Mar 16, 2010
I have a clickable TextView with a drawable as its background. I'm looking for the right way to implement a down-state drawable so the background changes when the user presses down. I have been able to almost perfectly replicate this behavior by listening for MotionEvents and changing the background when the user is pressing down.. The only thing that doesn't match up with system-wide down state behavior here is that if the user keeps holding down and moves their finger off the button, the state remains down until they release their finger from the screen... whereas in Maps overlays or Buttons or ListViews or anything else the state immediately goes back to off when the finger moves from the object.
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Nov 17, 2010
I am displaying the attachments that are for a mail but i am unable to display all the attachments as the newline "
" is not working . can anyone tell me how can i implement the escape characters on the textview
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