Android :: BaseAdapter Don't Hide Layout With SetVisibility - View.GONE
Jul 29, 2010
I have a little problem. I have class
CODE:..............
When I do that, method convertView.setBackgroundColor(Color.RED) work great, what I need Image is there:
dl.dropbox.com/u/866867/stack/device2.png
But when I want to remove that item, I can't do it. I add there convertView.setVisibility(View.GONE); , but have empty item, beside hide it. I read that parameter View.INVISIBLE won't hide layout, but View.GONE have, but in my code, doesn't.
And that image: http://dl.dropbox.com/u/866867/stack/device.png
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Aug 23, 2010
I have made a sample application to flip through different layouts in a viewflipper.
XML is basically (pseudo-code)
<ViewFlipper>
<LinearLayout><TextView text:"this is the first page" /></LinearLayout>
<LinearLayout><TextView text:"this is the second page" /></LinearLayout>
<LinearLayout><TextView text:"this is the third page" /></LinearLayout>
</ViewFlipper>...........
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Feb 16, 2010
I'm trying to get my first Android app stable enough for the marketplace, and I've hit a brick wall with one exception that I don't understand. Probably I'm doing something stupid, but I can't tell what, and after several hours googling and experimenting, I thought I'd see if I can get some help. My Activity extends ListActivity, and the parts I think are most important are extracted below:
GroupedListAdapter is a simple class that extends BasedAdapter to provide headings for sections of the list (not unlike the Fancy ListView tutorials that are floating around).
I create this in onCreate, and it works fine. Inside onListItemClick, I do some actions which will create a different set of list contents. I "clear" the adapter, which empties the contents, and call reload, which repopulates it. Then I call notifyDataSetChanged.
Most often, this seems to work, but also fairly often, I get the exception following the code snippets below - this seems to indicate the ListView is not in sync with my changes. Lately this crash happens 100% of the time under the simulator.
CODE:.........................
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Feb 22, 2009
In a list, is it possible to have different kind of views, inflated from different layout XML?
I started with the sample in the API Demo, using the Efficient Adapter, and it starts like this Code...
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Jan 23, 2009
Is it possible to build a GridView object in XML with 3 columns and 4 rows of Image buttons? It doesn't seem to have similar containment relationship like LinearLayout or RelativeLayout viewgroups.
I want to do this entirely in an xml layout file. When I put ImageButton xml tags inside a GridView xml body, The layout panel in eclipse is throwing an exception: UnsupportedOperationException:addView(View, LayoutParams) is not supported in AdapterView.
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Oct 13, 2009
I have some optional views in my xml layout. Namely a radioGroup and buttons. How can I hide these programtically?
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Dec 9, 2009
Code...
I cannot find any information on how to change or hide the background image.
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Aug 17, 2010
I want to build my own custom view which should look like the Crysis-GUI.At first I designed a XML-based Layout and made it visible via the setContentView(int resid)-Method. Worked pretty well.But now I wan't to go a step further and draw in my Layout. So I created a new Class, let it extend View and overrode the onDraw()-Method. So far so good.But how can I still use my XML-Layout? I can't do setContentView anymore, so how could the same effect be achieved?
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Mar 10, 2010
So my layout looks basically like this:
<ScrollView>
<RelativeLayout>
<BunchOfViews/>
<ImageView android:layout_alignParentBottom="true"/>
</RelativeLayout>
</ScrollView>
I have the ScrollView so all of the layout always is visible no matter the height of the screen. The problem is that on a very high screen, I still want my imageview to be at the bottom. However, a child of a ScrollView dont seem to have a defined bottom. The View is placed at the top of the layout. How can I solve this problem in a neat way?
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Oct 8, 2010
I have an XML layout with some custom tabs, a heading, and a ProgressBar(main.xml). I wish to add another XML layout(home.xml) to the main.xml layout, as i wish to keep main.xml re-usable for other activity's layouts and simply add things to it as necessary.The problem: after inflating R.layout.home into rootLayout, it seems as though the ProgressBar contained in rootLayout is hidden underneath the content of home.xml.Is there a way to tell certain views(via XML) to float above other views when the layout is constructed in this way?if not, am i forced to use methods such as progressBar.bringToFront() to raise targeted views to the top?what alternatives do i have in z-ordering views when some layouts are constructed using inflation?
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Mar 11, 2010
I've tried to add a TextView before a ListView in a LinearLayout. The result is that the ListView wont show at all. The same thing happens if I put the TextView after the ListView, but then I will only see the ListView. Is there a way to get a text view above the ListView without to much of a hassle?
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Apr 24, 2010
I'm having a problem when setting the visibility of two image buttons one on top of the other. The idea is to implement a play/pause control. The problem is that the only part where setting the visibility actually works is in the click listeners of the buttons. If I try to change it somewhere else nothing happens.
CODE:.......................
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Nov 21, 2010
I am using a flipper in my main xml file to view multiple layouts in my app. For instance, if something = 1, the user is shown one version of the flipper, where if something = 2 the user sees a different version. Is there a way I can view the layout of the xml file for the other flippers I have rather than the main one? Ie, is there a way to switch views of each state of the flipper in eclipse?
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Sep 10, 2010
Is there a clever way to let the user switch between hide and view password in an android EditText?A number of PC based apps let the user do this.
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Sep 7, 2009
In browsers when I type view-source: before any address it gives me the page source. But i am not able to do it in android. It gives me "web page not available" . Can any one please tell me why it is giving that and any other way for me to view the page source in android?
One more doubt is what exactly is "@hide", even if I commented it( /** @hide */) it is having some meaning( it is not visible in another classes ). When I deleted it its working fine, it is visible. what is the reason?
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Jul 14, 2010
I tried with threads, but android throws "CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.".
So how can I wait 3 seconds and then hide the view, letting the GUI responsive?
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Sep 26, 2010
For an Android application, I'm trying to use a Spinner which, when an option is selected, will hide/display relevant View objects. For my application, these objects are an EditText and an associated TextView label for the field. Unfortunately, I can't seem to get the EditText to hide/display, and when I add it code to hide/display the TextView, I get a NullPointerException. I presume that since I am laying out the view objects in a RelativeLayout, by hiding one of the view objects, I am removing its relationship with other view objects, hence the NullPointer.
Can anyone figure out why this might be happening? Here's my code...
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Mar 5, 2010
When I had a view that's in my HorizontalScrollView it leaves a blank area because it's still being considered for layout purposes. Is there a way to have it not occupy space when I hide it?
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Mar 2, 2010
How do I ensure that I get the 'resize' behavior when the IME is shown/hidden?
I've included the following in my manifest:
android:windowSoftInputMode="adjustResize"
What else am I supposed to add? I've read that the container that the View is placed in should 'support resize' but what layouts support this?
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Apr 20, 2009
In my code, I only changed the layout params of an image after it is shown. For example, change the height of the layout. I called the invalidate() function after the change, but it does not work. Although the height of the layoutparams changed, but the view does not change. Why?
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Mar 3, 2009
I want to re-use 1 adapter (similar to well known ImageAdapter from samples) with 2 different views - Gallery and GridView. I need to specify LayoutParams for the each View returned by getView() method of my adapter. In case of Gallery it should be instance of Gallery.LayoutParams, and in case of GridView it should be GridView.LayoutParams. I'll get an exception for sure if I'll try Gallery.LayoutParams with GridView and vice versa.What is the best way to do that? Can I somehow use "parent" parameter (ViewGroup parent) for that?
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Feb 25, 2010
I have a layout defined in XML. I would like to inflate this RelativeView with other XML layout file. I may use different layouts depending on a situation. How should I do it?
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Nov 28, 2009
Currently, I am creating a custom View class (DrawView) that inherits the View class and adding to my activity programatically by using RelativeLayout and LaoutParams etc. But is there an easier way to do this by adding my DrawView to the layout XML file?
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Jun 23, 2009
I've created a custom view via .xml file, and I wanted to add it as a a contentView to an alert Dialog usinf a dialogBuilder:
CODE:.................
The problem is...I can't get my view from my custom layout... I only have an id (int)...
I tried Resource.getLayout(int) => it returns an xmlParser... not very usefull ...
finally the solution I comes up is so disgusting ( it worked but ... let's have a look)
CODE:.......
How can I do that easily without using such a disgusting way... ?
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Mar 9, 2010
I am trying to do is to embed a custom view in the default layout main.xml:
CODE:......
As you can see the class is called com.lam.customview.CustomDisplayView, with the id of custom_display_view1. now in the com.lam.customview.CustomDisplayView class, i want to use another layout called custom_display_view.xml because i don't want to programmatically create controls/widgets.
Custom_display_view.xml is just a button and an image, the content of which i want to change based on certain conditions:
CODE:..............
I tried to do:
1)
CODE:........
But got this error, "03-08 20:33:15.711: ERROR/onCreate(10879): Binary XML file line #8: Error inflating class java.lang.reflect.Constructor ".
2)
CODE:..........
But got this error, "03-08 20:28:47.401: ERROR/CustomDisplayView(10806): Resource ID #0x7f050002 type #0x12 is not valid "
Also, if i do it this way, as someone has suggested, it's not clear to me how the custom_display_view.xml is associated with the custom view class.
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Jul 15, 2010
I've created my own view by creating a subclass of the SurfaceView class.
However I can't figure out how to add it from the xml layout file.
My current main.xml looks like this:
CODE:............
What have I missed?
My view looks like this
CODE:..............
And it works fine like this:
CODE:..................
But nothing happens when trying to use it from the xml.
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Sep 16, 2010
I am beginning developing android application. What I need to know is how to associated a xml layout file with a new class (not the activity). For example the class needs to have a table with an image and some texts.
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Sep 14, 2010
I am using WebView in an ActivityGroup and it will throw an exception if WebView show Dialog and complain the activity is not valid. But it's okay if I set the context of the WebView to the TOP activity. So I wish to know how to set the context in the layout xml ?
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Feb 16, 2010
I have and activity MyActivity that extends from MapActivity. In the .xml file containing the layout I can only include the MapView: However I do neet to find another view that is located in another .xml file. Unfortunately, findViewById returns null. How can I get the view I am looking for?
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Jul 26, 2010
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:id="@+id/llAddNote"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginRight="8dip"
android:background="#CCFFCC">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="24dip"
android:text="Add Notes"/>
<TableLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="24dip"
android:layout_marginRight="24dip"
android:id="@+id/tlNotes"
android:stretchColumns="0">
</TableLayout>
<Button
android:id="@+id/bAddNoteLine"
android:layout_marginLeft="24dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="ADD">
</Button>
<LinearLayout
android:id="@+id/llIndex"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="21dip"
android:gravity="center">
<Button
android:id="@+id/bSaveSubjectiveNote"
android:layout_width="192dip"
android:layout_height="wrap_content"
android:text="Save"/>
<Button
android:id="@+id/bDiscardSubjectiveNote"
android:layout_width="192dip"
android:layout_height="wrap_content"
android:layout_marginLeft="48dip"
android:background="@drawable/button"
android:text="Discard"/></LinearLayout>
</LinearLayout>
How to retrieve the index of linearLayout which has "llIndex" as id.
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