Android :: Set TextView Attributes Programmatically?
Sep 12, 2010
I am desperately trying to set TextView attributes of cells within a table programmatically but can't get this to work! Whenever I set layout properties, the field will simply not appear (but not give any error or exception). I boilded this down to this simple example:
CODE:.......
This will show three fields, but when you uncomment the five commented line, then NOTHING will appear. Why is that so? Why does setting layout parameters cause my TextView's to not appear? I'm stuck! What am I missing?
Here's the manifest, if some kind soul quickly wants to try this out:
CODE:.....................
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Apr 27, 2010
I need to create a GUI (layout+views) in my .java activity class (I know it's far more flexible and easier to use .xml layout file, but I don't want to use it for now).
I can't find any setGravity() (but a "Gravity" object I can't figure how to use) or any set setMargin() method for the "View" object. What is the easiest way to do it?
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Sep 23, 2010
I can use android:gravity="bottom|center_horizontal" in xml on a textview to get my desired results but I need to do this programmatically.
My textview is inside a tablerow if that matters in a relativelayout.
I have tried:
CODE:........
But if I understand that correctly, that would apply it to the tablerow? not the textview?
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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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Mar 17, 2010
I want to set MaxLenght of TextView Through programming i cannot see Set function related to MaxLenght can any one guide me how to achieve this?
i don't want hard code in layout.
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Jul 16, 2010
I'm currently using something like: TextView.SetBackgroundColor(Color.WHITE); in my java code. I'd like to be able to add some transparancy to the textview through the java... This is easy to do in the XML via #AARRGGBB format, but I have not found a way to accomplish this programmatically.
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Nov 2, 2010
I'm trying to access the textviews (for starters, eventually replace with imageviews etc) which are stored in the tablerows in the code below.
The line beginning 'log.d' was the part I was working on, trying to get it to print out the contents of the 2nd text view in the first row, but I can only get as far as selecting the tablerow using "getChildAt(i)".
Trying "getChildAt(0).getChildAt(1)" doesn't select the textview as I would have expected it to; says that it's a View and as such, doesn't have this method - though unless I'm mistaken, aren't tablerows ViewGroups, which do have this method? code...
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Jan 11, 2010
I have been trying to find a solution for this for the last 3 days but i just failed hit a final answer!
I am creating a View-based class where i show a ball bouncing of the sides. I use a Timer to control the animation.
I want to add a TextView programmatically in my view class. I am trying to instantiate an object of TextView with reference to the context as follows code...
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Nov 16, 2010
I want to do something like that. For example, I have a textview with String
Alibaba love Mary so muck. In that String alibaba and Mary have a event to open something but I can't know how to use event for Mary and Alibaba seperately
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Dec 7, 2009
In my application, I don't want the activity to restart when user changes his mobile's orientation or when he opens his physical keyboard.So, I have to assign the following XML attribute to all my activities in the manifest file.Is it possible to assign the same XML attribute value to all activities ? Or should I copy the attribute in all the <activity> tags of the manifest?
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Nov 5, 2009
I met a problem in setting xml attribute at run time.
For example I define a xml layout like this:
CODE:.......................
I want to set android:drawableLeft="@drawable/icon" at runtime.But thers has no setter method for this attribute.
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Sep 26, 2010
I use custom xml attributes for preferences. The preferences are inflated from xml.I managed to create and read custom xml attributes for EditTextPreference, ListPreference and CheckBoxPreference by creating custom classes which inherit from the respective preference class.My problem is that I can't do this for the PreferenceScreen class, as it is a final class. So my question is: Is there any way I can read the custom attributes of a PreferenceScreen?
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Feb 5, 2010
can i affect the look of the dropshadow that the scroll view shows when there's "more" available via scrolling? i'm not seeing anything in the scrollview docs.
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Aug 29, 2009
Can u tel me what are the attributes we want to specify in the <scrollview> xml file.... bcoz i want to display scrollbar n my layout...i tried scrollview but it shows an error like force to close....
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Nov 26, 2009
Is it possible to define an attribute value of a height attribute, for example, relative to its parent's height. For instance, I want the linear_layout's height to be 2/3 of its FrameLayout parent. I have a FrameLayout with two linear_layouts. The first linear_layout fills the entire FrameLayout and the second linear_layout overlaps the first but only 2 / 3 of its height.
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Jan 22, 2010
I have downloaded a media file. (say mp3 file). I need to get the attributes of the file, like ARTIST, TITLE etc.
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Nov 26, 2009
I have a simple horizontal linear_layout with bunch of image views in it. the trick is that the views have different widths, relative to the size of their parent (the linear layout). I set the layout's weightSum to a 100 and the layout_weight to let's say 10 of one view and 15 of the other, on so on. And it did not work. I also tired using float values setting the weightSum to 1.0 and the layout_weight of the image views to 0.2 and 0.3 and so on. But it didn't work either. I did search this group for any references to the weightSum but found nothing. Any ideas how to handle it?
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Feb 10, 2009
I want to create an application that can change one's voice during a call in real time is there a way to do that in android? can you point me to the right package?
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Aug 27, 2009
I was wondering if anyone could give me hints on this one (i am re-posting an older version of a question i once had): i created a new attrs.xml that adds some functionality to the soft keyboard sample code.. code...
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Apr 17, 2009
I'm introducing multiple custom widgets for my application, extending View. These widgets (LineGraph and DotMatrix) include various attributes that can be set via the layout-xml. How can I have multiple widgets using attributes with the same name. For instance, 2 attributes both having color as an attribute that can be set via the layout XML?
main.xml snippet:
CODE:......
When I want to add the info for my LineGraph in attrs.xml, Eclipse starts to whine: "ERROR Attribute "color" has already been defined" XML:
CODE:.......
Is it not possible to have a DotMatix resource with a color attribute, and a LineGraph resource with a color attribute?
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Oct 12, 2009
Steps necessary to add a couple simple attributes to the stock Android Contacts application. Also, in the event the vendor has shipped their own Contacts application, will the same solution apply equally well to those handsets shipped with custom apps? I'm not looking for anyone to supply code; just a design pattern and any caveats I need to be aware of. I am writing an application that requires a couple new properties on the contact.
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Oct 20, 2010
I want to center the application title/label in my android app but I can't find a lot of documentation on how to set that property. I have found a couple of posts saying that I can create a custom title bar and change the theme in my manifest but I just can help think there is a simpler way to just center the title.
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Jul 8, 2010
Having custom attribute (in attrs.xml) in library project leads to compilation fail of the project dependent of that library.Code...
How to avoid this except for no having custom attributes in library?
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Aug 6, 2010
I have defined custom views in the various layout .xml files. However, all the layouts are using the Linear Layout - put the content would vary.
I would like to create my own widget tag something like <com.mypackage.MyLinearLayout />, I would like to pass the layout as a param to the <com.mypackage.MyLinearLayout layout="@layout/simple.xml" />
How to define new attributes to the custom widgets ? Simply defining a getter/setter method would work or is there any other references.
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Sep 14, 2010
Is there a way to specify a background in a layout based on OS version?:
android:background_1.5="@color/white"android:background_above_1.5="@drawable/mybackground"
I'm running into a problem where using a 9 png drawable for the background causes a stack overflow exception on a listview item (stack trace shows its related to a child TextView -> drawText()). The layout is simple:
<LinearLayout><ImageView /><TextView /></LinearLayout>
and the background works fine on 1.6 and above. It's just 1.5 that's having the issue. If I set the background to be a color, it works fine.
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Mar 28, 2010
Looking in the android sdk folders, I've found a file called values/config.xml. This seems to be somewhere that you can define values for later use in layouts and animations.
Given the config.xml:
<resources>
<string name="config_somePadding">50dip</string>
</resources>
How would I reference this to use as the layout_height in a layout xml file?
@string/config_somePadding is actually the only one I've found that doesn't throw an error in Eclipse (even though there isn't a config_somePadding in values/strings.xml), but it appears to just put an empty string.
In the sdk, they use an integer for animation duration. They reference it like this: android:duration="@android:integer/config_longAnimTime". Is there a way to use values that aren't integers in the layout_height attribute?
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Sep 20, 2010
I am able to bind an object to Javascript through addJavaInterface() of WebView. I am able to access methods from JavaScript, Is there a way to access the java class attributes through JavaScript?
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Jun 9, 2010
I'm looking for a way to implement a minimum value in my SeekBar and also have the option to increment decimal numbers. For example, currently my SeekBar's minimum is set to 0, but I need it to start at the value 0.2. Also, I would like to have the functionality to be able to have the user select a number from 0.2 to 10.0 at a .1 precision so they can choose the numbers 5.6 or 7.1.
Here are the style attributes for my SeekBar:
CODE:..............
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Jun 16, 2009
If a RelativeLayout must be generated at run time, what are the equivalent API calls for the attributes set in the XML Layout editor? Take for example this very simple RelativeLayout that places the second ImageView to the right of the first ImageView:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/ android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="horizontal" android:background="@drawable/ bg_sunrise"
android:layout_gravity="center" android:gravity="center">
<ImageView android:id="@+id/ImageView01" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/icon"></ ImageView>
<ImageView android:id="@+id/ImageView02" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toRightOf="@id/ ImageView01" android:src="@drawable/icon"></ImageView> </RelativeLayout>
Of the many, variations I tried, I had the most hope for this one, but it didn't work either:
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
RelativeLayout layout = new RelativeLayout(this);
layout.setLayoutParams( new ViewGroup.LayoutParams (
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT ) );
ImageView imageView1 = new ImageView(this);
imageView1.setImageResource(R.drawable.icon);
imageView1.setAdjustViewBounds(true);
// set the ImageView bounds to match the Drawable's dimensions
RelativeLayout.LayoutParams params1 = new RelativeLayout.LayoutParams (LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params1.addRule(RelativeLayout.ALIGN_PARENT_TOP); layout.addView(imageView1, params1);
ImageView imageView2 = new ImageView(this); imageView2.setImageResource(R.drawable.icon);
imageView2.setAdjustViewBounds(true); // set the ImageView bounds to match the Drawable's dimensions
RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams
(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params2.addRule(RelativeLayout.RIGHT_OF, imageView1.getId());
layout.addView(imageView2, params2); this.setContentView(layout); }
Can anyone offer the Java equivalent to the above XML? Can anyone explain why there is no attribute, getter/setter, or method for accessing the properties that can be set in XML? What is the most elegant solution for dynamically creating Layouts, Views, and other Resources on the Android platform when there is no Java programmatic equivalent?
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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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