I have a custom view that works fine and I'm trying to get gestures into it. The most common technique I see is to add XML, such as this (from Android docs.Can someone point out my errors, suggest a better way that will allow me to get gesture callbacks and/or suggest diagnostic approaches?
View 1 Replies
I am coding a custom view, extended from RelativeLayout, and I want to resize it programmatically, How can I do?
View 3 Replies View RelatedI 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?
View 2 Replies View RelatedI 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?
View 1 Replies View RelatedI am on Android 2.1 and I have one multi column Custom listview Using BaseAdapter with an editable edittext at the end of the listview. If the data in the listview do not contain the data of user choice then user should be able to enter data. If the data is already there in the list user will be able to select the data using custom selector. If a selection is made in the list view and user wanted to enter data in the text field at the bottom after selection then the marker in the list view should be unselected. I tried to use onclick() method on edit text using click listener. First time when it is clicked, edit text is getting focus and onclick() method is not fired. And when it is clicked second time, onclick() method is fired and notifyDataSetChanged() method is called. I tried to call the notifyDataSetChanged() method from the Focus Listener, list view selection is gone in my first attempt and edit text is not receiving any data input from the keyboard (frozen).
View 1 Replies View RelatedI've created a custom view in an SQLite database for an Android application. I'm using Sqliteman on Ubuntu to test my SQL statements before I put them in my app. I'm trying to do a simple select statement on my view. The select statement works fine in SQLiteman but when I put the same statement in my code it throws an error. The statement: select * from item_view where parent_item_id = 0;........
View 2 Replies View RelatedI am trying to set up a ViewFlipper that changes a SlidingDrawers content each time a button is pressed. So far every view I set up worked fine, but now I am trying to create a ListView (including single_choice_mode) within a child view of the ViewFlipper, but my attempt only let to a NullPointerException. As I only discovered ViewFlipper today, I am not yet familiar with it and may not have understood it completely. if someone could give me a hand and help me find out what I have done wrong, that would be great. Here is what I have done:
The code for the onClick event of the ImageButtons:
public void onClick(View v){
if (v == btnExposure){
mFlipper.setDisplayedChild(0); }
else if (v == btnProperties){
mFlipper.setDisplayedChild(1);}
else if (v == btnSpecialEffects){
mFlipper.setDisplayedChild(2);.............
Is there a way i can create a view and add some textviews into it ? programmatically ? any sample code?
View 2 Replies View RelatedOther questions say that the style cannot be set programmatically, but a View can be initialised with a style such as when it is loaded from XML.How can I initialise a View with a particular style programmaticly (not in XML)? I tried using View(Context context, AttributeSet attrs, int defStyle), but I don't know what to parse in for the second argument. Passing in null results in the View not being displayed
View 1 Replies View RelatedI would like to set a "style" for the button how can I do that in java since a want to use several style for each button I will use.
View 1 Replies View RelatedI have a ListView with an adapter extending BaseAdapter.I create a view (from a LinearLayout and I put some items ont it depending on some parameters. I have a textview, with a drawable and sometime another textview next to the drawable in this horizontal linearlayout. For some reason, this command doesn't seems to work. So when my textview doesn't fill the full width of the list, I can only click on the part of the elements with the widget on it. I have try playing a lot with the layout and I can't get this to work. The parameters seems to be ignore all together. Only hack that would work I found was to set a big minimum width on my linearlayout but I don't think that's the best solution.
View 1 Replies View RelatedI 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?
If you use an AbsoluteLayout (I know that it is deprecated, but it was the only way to solve my problem ) you can give the childViews the tag "android:layout_x" and "android:layout_y" to set their absolute position within the AbsoluteLayout.
However I dont want to set these informationen in the xml, because I only know them at runtime. So how can I set these parameters at runtime programmatically? I dont see any method on the View like view.setLayoutX(int x) or something.
Here is my XML, which works fine, when I set the layout_x and layout_y values. code...
The documentation at http://code.google.com/android/reference/android/widget/AbsoluteLayout.html says:
onLayout(boolean changed, int l, int t, int r, int b) //Called from layout when this view should assign a size and position to each of its children. So I overrode it like this:
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
Log.d("test", "In MainLayout.onLayout");
int childCount = getChildCount();
for (int childIndex = 0; childIndex < childCount; childIndex++) {
getChildAt(childIndex).setLayoutParams(new LayoutParams(100, 100, 100, 100));
}
super.onLayout(changed, l, t, r, b);
}
I am declaring the child elements (buttons) in the XML for the layout. This correctly sets the position of the buttons but not the size. The size is being taken from what is defined in the XML (it's a required attribute).
Is it possible to programmatically send click events to a view? if so, how?
View 1 Replies View RelatedI 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...
I have a png file in my res/drawable-ldpi folder. I'm working in Eclipse with the emulator, but I've tried this on my 2.2.1 Android phone and I get the same behavior. I have an ImageView and I want to set the src programatically, based on a database call. If I just put
Code:
src="@drawable.norusdpyr"
in the Activity's XML file, the file displays fine. BUT, if I put
Code:
String imageresource = "R.drawable." + parsedData[4].toString();
chart.setImageURI(Uri.parse(imageresource));
where parsedData[4].toString() = "nor_usdpyr" I don't see anything. I've also tried
Code:
String imageresource = "android.resource://" + getPackageName() + "/R.drawable." + parsedData[4].toString();
chart.setImageURI(Uri.parse(imageresource));
and
Code:
InputStream is = getClass().getResourceAsStream("/drawable/" + parsedData[4].toString());
chart.setImageDrawable(Drawable.createFromStream(is, ""));
and
Code:
String imageresource = "R.drawable." + parsedData[4].toString();
File file = new File(imageresource);
chart.setImageDrawable(Drawable.createFromPath(file.getAbsolutePath()));
and
Code:
Context context = getApplicationContext();
int ResID = context.getResources().getIdentifier(imageresource, "drawable", "com.KnitCard.project");
chart.setImageResource(ResID);
finally,
Code:
chart.setImageURI(Uri.parse("android.resource://" + getPackageName() + "/R.drawable.nor_usdpyr"));
doesn't work.
None of these work. What am I doing wrong?
I'm writing my own custom view, a keyboard, which I think the ArrayList in the keyboard view is causing the application to quit in the emulator.
public static ArrayList<HexButton> hexButtons = new ArrayList<HexButton>();
The application ran fine when I did
setContentView(myKeyboardView);
But I want to nest my keyboard with a TextView so I'd like to be able to do
setContentView(R.layout.main);
Trying to support Swype on application for Android. The code isn't using Android's native EditTextView but our own custom View. What API can be used to retrieve the text once a swype has been completed and what callback method we should expect in our View?
View 3 Replies View RelatedCan I use a custom view like com.examples.me.customview in the xml file of a app widget and can then draw in the onDraw of the custom view? Or do I have to draw into the drawing cache of an ImageView instead?
View 12 Replies View Relatedi made a extended a View, overwrote the 3 View Contructors and tried to insert it on my xml of a widget.is it possible to use custom views in Widgets?
View 1 Replies View RelatedI want to create a custom view.In which i want to have a background image,2 buttons,1 textview.Can anybody tell me how to start with.
View 2 Replies View Relatedi have a custom view, when i want to add a scrollbar to it, i have a problem, i have learn the code of GridViewSpecial(which belong to Gallery) to my code, i found that my app can't resolve android.R.styleable, i search this question in groups, i know it was removed from SDK. so i write a styleable same as SDK in my app's attr.xml, but it wasn't work,i get a nullpointer when my view draw scrollbar.So someone can help me ?how can I add a scrollbar in my custom view ? (I don't want use ScrollView in my APP
View 2 Replies View RelatedWhen I comment out setContentView(boardView); in my Game.java my custom view in BoardView works fine and displays everything nicely... but onSizeChanged never gets called in BoardView.java... so I can't read the device width and height at runtime. If I leave setContentView uncommented onSizeChanged works... but the screen is blank! I want to be able to read the screen width and height at runtime and set the sizes of my ImageViews at creation so they are the optimal size.
public class Game extends Activity implements OnClickListener{
private BoardView boardView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {....................
Here is the XML for the layout in which I want my custom view to appear.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:id="@+id/widget273"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:rs="http://schemas.android.com/apk/res/com.bookcessed.booksearch"..................
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?
View 4 Replies View RelatedI was attempting to add a custom view in XML, but I kept getting force closes. It works fine when I just find the parent and use addView() so it isn't the code. I'm pretty sure I'm just getting the constructors wrong. Does anyone have any experience with this?
Here's what I've got:
CODE:................
I'm trying to create a button in a custom view that I've created. I'm looping through an XML document and drawing certain things. I want to be able to also create buttons to go in certain locations depending on the xml data. I'd like to do it in the view because I want to be able to call invalidate() on my view to redraw things and replace the buttons when new xml data is available.
The problem is that I put my code in the view class, the activity crashes because the button is "null".
Here is a subset of my code:
CODE:............
I know this code works for creating buttons because I can put it in my activity class and it works just fine. Any suggestions? I thought about relocating the button in the activity, but I can't figure out how to do this when new data is available.
I'm writing a little custom view which can be in two states : checked, not checked. According to the state it is in, it's background changes. Quite straightforward sort of behavior. My class extends FrameLayout and implements the Checkable interface.
In my toogle method I just calls the setChecked method with a boolean corresponding to the new state. My setChecked method simply sets a mChecked boolean and calls the refreshDrawableState method. Pressing the view should then toggle it back and forth between the states check, unchecked.
The background of the FrameLayout is given a StateListDrawable in which I've defined a drawable item for the following states: state_pressed, state_focused, state_checked=true, state_checked=false.
When I press my custom view, the background changes all right back and forth between the state_pressed=true and state_checked=false items. But state_checked=true is never called.
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... ?