Android :: Changing One TextView With OnSensorChanged Without Redrawing Entire Layout

Jun 8, 2009

I am having a bit of trouble with my current application. With a button at the beginning of my app, I send out Intents for two activities, one gets a camera object, and starts a preview screen. On top of that, in a separate layout, there is an activity with a translucent view, which shows a resource image (the user is trying to get the image he is actually taking to align with the translucent image) and a couple of textviews displaying a target phone orientation as well as the user's current phone orientation.

when I update the text value of one of my text views in my onSensorChanged() field, the system constantly reallocates 1.22MB and garbage collects it. I can only assume that this is because it is redrawing the entire layout with the translucent image and the text fields, because if I remove the view containing the translucent image from the layout, my text field updates 10x quicker and I don't have ridiculous heap growing / garbage collecting. I am wondering how to go about getting the text fields to update without redrawing the entire surface. I am very new to UI design, and this code was written by someone else before I took over the project, so I don't understand much of what is going on in the custom view he wrote to take care of the translucent image -- called MyView. I will post the code for the layout as well as the MyView code below.................................

Android :: Changing one TextView with onSensorChanged without Redrawing Entire Layout


Android :: Redrawing Widget When Changing Orientation

Apr 26, 2010

I have a widget set up and it displays properly in both portrait and landscape when added to each. But when I change orientation it has the problem "Problem Loading Widget". I delete this, re-add the widget, and it displays correctly. Thus, my widget can support both portrait and landscape but it doesn't survive an orientation switch. What am I missing? Do I need to redraw the widget when orientation is changed? Doesn't it do this automatically? Do I need to call onUpdate() somehow?

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Android :: Can I Do This Entire Layout With Relative Layout?

May 4, 2010

Here's a screen shot of the layout I'm looking for: http://www.vimtips.org/media/ll.png Can this all be done with one Relative Layout?

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Android :: Using Layout Includes With Layouts That Are Greedy - Want To Take Entire Screen Space

Jul 31, 2009

I would like to use an <include /> in my XML file to add a layout below a MapView(or any other greedy layout). I have been trying for a few hours now, and no luck so far. I was hoping someone could give me a hand.

Here is what my XML looks like now:

CODE:...................

Optimally, the include could be any sort of other layout. The goal here is to have the Google map on the top, and then have the included layout below it. If I include the content in the layout, such as replacing the <include /> tag with a <TextView /> then that works correctly, so I am thinking I am mis-using the include. A trip to hierarchy viewer shows that the included layout has no height. I have tried putting the include first, and using a RelativeLayout to position the map above the included layout, but I could not get that to work correctly (the included layout took the entire screen space, even though I explicitly said layout_height='wrap_content'

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General :: Changing Ext4 Partition To Swap Without Having To Format Entire SDCard?

Apr 27, 2013

One of devs from my device had told us that he'll move system and data images from sdcard to SD ext, but actually he left before doing this so now I'm stuck with useless 5gb ext4 partition on my scard. I'd format it and then change partitions if my sdcard wouldn't be filled with over 20GB of various files. Is it possible to change the size of the second partition to about 500 MB and turn it from ext4 to swap without formatting entire sdcard?

R800i

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Android :: TextView Changing From Other Thread

Aug 1, 2009

I'm writing some game using OpenGL and have two views : SurfaceView for OGL and TextView for my score. When I try to update score ( using BoardScore.setText("bla"); ) from my activity class all just fine, but when I try to do it from my logic class my app crash. Debugger says something like ViewRoot$CalledFromWrongThreadException (id=830053983760) But I need to update it from logic to know my score.

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Android :: Changing Unselected Color Of TextView

Oct 14, 2010

I have a TextView that lives inside a LinearLayout. When I call LinearLayout.setSelected(false) the TextView text changes from white to black. Is there a way to set the unselected text color to something else?

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Android : Changing Text Value Of A Textview Dynamically

Nov 9, 2010

I have a textview in my XML layout file, but when I try to change its text value with code pragmatically (dynamically, depending on which button the user clicks) then the text of the textview doesn't change.

This is the code that I tried:

TextView userText = (TextView) findViewById(R.id.User);

userText.setText(bundle.getString("user"));

In debug mode, I can see that usertext has the changed text, but the change doesn't appear on my mobile window... I don't know why.

EDIT: SOLVED! it was a problem with my relative layout, text is out of the window!

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Android :: Changing TextView Properties Of A ListView Crashes The App

Sep 3, 2010

CODE:.....

list_item.xml

CDE:......

The problem is that I want to set a new typeface for the TextView in the ListView, and it seems it can't be done in the XML file!

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Android :: Sleeping In OnTouchEvent Blocks OnSensorChanged

Nov 13, 2010

I'm making an application which will utilize both touchevents and sensorevents. The problem with touchevents is that they fire off very often, and thereby consumes massive amounts of CPU time. The common solution is to do a Thread.sleep to make it cool down.However, if one wants to use both the onTouchEvent and onSensorChanged in the same activity, applying the Thread.sleep hack will also slow down onSensorChanged. This is obviously caused by the two methods being called from the same (ui) thread.Is there some way to call onTouchEvent from a different thread than the ui, so one could do the Thread.sleep trick without slowing down onSensorChanged as well?

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Android :: Layout With ScrollView And TextView

Apr 1, 2010

I want to have a textview (like a console or output window), which scrolls. I saw on this list that the TextView will not scroll on its own unless I wrap it in a ScrollView. So I did that and it worked. The problem is, it seemed no matter what I did I could not get the TextView to be higher than one line. This was only when it was embedded in the ScrollView, and didn't seem to change whatever I set the TexView's layout_height to.

Here is my layout:

CODE:..............................

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Android : Layout - Top And Bottom TextView

Mar 10, 2009

I was working on my Hello-World-type application, and wanted to place a text view aligned to the top of the screen, and another aligned to the bottom, but can't grasp yet the layout philosophy...

After reading the dev guide for layouts, I came up with this:

CODE:........

But it's not working. Can anyone give a tip, or point me to good resource?

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Android : Put A TextView On A Layout Without Using An Xml-file?

Dec 25, 2009

Why doesn't write this program "Hello World! :-)" on my screen? I know how I would do it with an xml-file, but I want to do it like in the following program. And how can I set the coordinates without setting the width and height like with tv.layout(10,10,100,100);?

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Changing String Of Textview?

Jun 11, 2013

i'm working on an android application with 2 activities.

The first activity contains 2 buttons ( btn1 , btn2).

The second activity contains a textview and a back button.

In the string.xml I have two strings ( str1, str2).

What I want is when I click on btn1 the second activity should open and the textview will show the first string str1 and when I click on the second button btn2 the second activity open and the same textview show the second string str2.

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Android :: Add Textview To Linear Layout Programmatically

Jul 8, 2010

I am trying to add TextViews to my xml-defined layout in code. I have a xml-sheet, where a lot of Views are defined. But I have to add some views in code, so a create a LinearLayout in the xml-sheet:

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:id="@+id/info"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
And in this layout, I like to add my TextView:......

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Android :: Add TextView/Layout To Map's Overlay / OverlayItem?

Apr 12, 2010

When a marker is clicked on google map, a small square area is displayed with hyperlinks. I guess OverlayItem does not render hyperlinks for its snippet. How to achieve this? Ideally I want to assign a layout with all sorts widgets. Presume I can display a small floating activity window when the marker is clicked, but is this the standard way doing this? The drawback of floating activity window is that if want to click another marker, user has to dismiss the current window first.

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Android :: Overlay ImageButton By TextView On Xml Layout?

May 12, 2010

I'm looking for how to overlay an ImageButton by a TextView in android xml layout. For the moment when I reduce the the TextView margin top, the TextView is going under the ImageButton. I want the contrary.

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Android :: Relative Layout And Button To The Left Of TextView

Jan 22, 2010

In a RelativeLayout I have a Button to the right of a TextView. The problem is that the text view gets squished to the left of the screen.I want the Button to be squished to the right and the TextView take up all the remaining space.I can't use 'Fill Layout' on the TextView because the button then gets removed from the View completely.

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Android :: Display A Random String On TextView In Layout?

Nov 22, 2010

In Android, I wrote a number of strings in my string.xml I would like to display on a TextView based on a random number...code...

But I know I am not doing it right because I get the error:

The method array50(int) is undefined for the type MAIN. Any ideas?

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Android : Layout Xml - Place The TextView To The Left And The Radiobutton To The Right

Jan 19, 2010

I have the following layout xml. I am trying to place the TextView to the left, and the Radiobutton to the right. How can I accomplish this?

CODE:....................

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Android :: Changing Image In Layout

Sep 12, 2010

i've got this simple layout in a file derived from Activity

<?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="10dip" > <ImageView android:id="@+id/photo" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </ScrollView>

i'd like to change the imageview contents dynamically. which method do i need to overload - again this class is derived from Activity.

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Android :: Centering An ImageButton And A TextView In Relative Layout - Xml Code For This?

Nov 24, 2010

Android:layout_gravity="center" doesn't seem to work the same in a RelativeLayout as it does in a linear one - I would just like both an ImageButton and a TextView to be centered in a relative layout - is there a basic xml code for this?

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Android : Relative Layout Alignment Goes Wrong On A Multiline Textview

Oct 27, 2010

I have a relative layout with various text view aligned in it.But the alignment goes wrong if value of any textview goes multiline.is there any way to avoid it?
The view required is something like :

Name: Abc

address: 23,abc street,fhjhg apartments,Country

Email: abcdgehfhf@mail.com

address text view has width set as wrap-content
but it appears like:

Name: Abc

address: 23,abc street

Email: fhjhg apartments,Country

abcdgehfhf@mail.com

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Android :: Changing Widget Layout Programmatically

Dec 7, 2009

Let's say that I have two layouts for a widget: Layout1 and Layout2. The default for the widget is Layout1, but I allow the user to choose which layout they want the widget to be. So if the user changes to Layout2, how do I programmatically change the layout to Layout2? There isn't a setContentView method for widgets like there is for Activities.

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Android :: Changing Linear Layout In Widget

Apr 28, 2010

I have this really annoying problem:In my widget, i would like to change the background by code. I noticed on the Google doc than I can easily change the background of an Imageview: remoteViews.setImageViewResource (R.id.my_iv, R.drawable.my_bg);Ok, too easy, i want to change now the Linear layout.. What I read about the remoteview id that I can change a Bitmap, Int, Bool, String, etc. but not a drawable. So i guess i cannot use:remoteViews. set Bitmap (R.id.my_ll, "setBackgroundDrawable",BitmapFactory.decodeResource(context.get Resources(), R.drawablemy_bg));I am totally disapointed and tried a last idea: views.setInt (R.id. my_ ll,"setBackground Resource" ,R.drawable.my_bg);But The logcat told me: android. widget. Remote Views $Action Exception: view: android. widget.LinearLayout can't use method with RemoteViews:setBackgroundResource(int)I am totally lost and I really don't know what to do.

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Android :: Changing Spinner Layout / Design

Jan 14, 2010

I am trying to modify the design of Spinner widget. I can change the background, but I can't find a way to change the arrow icon on the right side. Is there a way to do it?

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Android :: Switching Between Listviews Without Changing Layout?

Nov 8, 2010

I'm not looking for exact code here, just a direction on what to look for and what I should be reading about so I can figure this out. I have a layout that I would like to remain static, with only the listview changing depending on what's selected from the list. I've reloaded data in the list, but I would like the fancy transition animations between choices, and would like the app to go to the previous menu when pressing back.

Someone suggested using a viewswitcher, which seems like it'd be great, but I am still unsure about how to fill a listview in a layout with a regular row layout, then on selection do an animated transition to a custom row. Also, it seems the viewswitcher is limited to two views, so it may be a limitation when I want to go a few menus deeper. Preferably, I'd like to put each menu in it's own class so that I can handle filling it in that class, if possible...

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Android :: Widget Buttons - Images Changing The Layout

Nov 21, 2010

I can write a widget with a Button or ImageButton and assign a StateDrawable as background or sourcein order to make an effect when you click it. Besides that I have problems with the side of each button, my main problem is this: how do I change the StateDrawable if I want to change the image of the button from the AppWidgetProvider but still want to preserve the click effect like a StateDrawable. The power control widget in Android does things like that.

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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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Android : Layout - Change The Text Color Of The Textview Inside The Listview Dynamically

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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