I have a problem about ScrollView
I want add myView(extends View) to the ScrollView, myView i will draw something, image or text, but when i create myView and add it in the scrollView ,but get the Height = 0 onSizeChanged(), i don't know why?
(1) myActivity
CODE:........
(2) HistoryTextView
CODE:...................
View 2 Replies
Is it possible to place an imageView in a class that extends View in android?
If possible please give me a sample code.
I'm trying to call a method from inside a Runnable that is running. It waits for a string to be entered and when it is then depending on the string (the strings act as commands) it calls a method and is supposed to run whats inside it. code...
View 2 Replies View RelatedI am getting an error , when I try to access the shared preference from within class that extends View.
The Error : "The method getSharedPreferences(String, int) is undefined for the type ViewforRed" , where ViewforRed is my class: Here is the sample code...
I have problem in scrolling of webview vertically when it's scrolled along vertically,where this webview is with in scrollview tag,how can i enable the scrolling for webview and to disable the scrolling of whole layout when its on webview contained layout.
View 1 Replies View RelatedI want the view group to extend with the ScrollView if the content of the group is smaller than the display area of the ScrollView.
How can I have the ScrollView child extend to fill the parent if it's smaller than the parent?
CODE:.........................
I must be overlooking something real simple here, but i think i'm trying to do something fairly basic.. Simply retain the scrollbar position of a ScrollView on orientation change...
Here is the code for my onSaveInstanceState and onRestoreInstanceState.. sView is the container for the ScrollView layout. Within my scrollview is a linearlayout with a lot of textviews.
CODE:............
If I set a Toast with the values of sViewX and sViewY on the Restore, the values are kept and correct.
I just tried to do a sView.scrollTo(0,150); in my onCreate.. just to see if that would open the activity at 150px down, and it didn't. I think my issue has to do with the .scrollTo method.
I want some of the goodies in a ListView, like being able to use a ListAdapter, and item selection, etc, but I don't want the ScrollView portion of it. I want to implement that part myself, in a different way (why or how I do this isn't really the point of this question, so please don't ask "why"). Is there a way to have a ListView that's not in a ScrollView or has the scrolling disabled?
View 2 Replies View RelatedI want to catch any onTouchEvent() on the mapview. After search lots of questions&answers, I found only when I write my own MapView(MyMapView)and define onTouchEvent, then use this MyMapView in main activity.
View 2 Replies View RelatedI would like to have a Preferences activity that has icons like the system settings has had since Eclair. It uses a special Preference called IconPreferenceScreen.I can copy that into my project without problem, but I'd like the behavior of the PreferenceScreen instead of just the Preference Class. I could like to click on it to show its children Preferences. I thought it would be a easy to change to make IconPreferenceScreen extend PreferenceScreen instead of Preference, but PreferenceScreen is Final.Why on earth would google make PreferenceScreen a final class? Is there anyway to achieve what I would like to do, short of dividing up my Preference into several other Preferences that all receive intents (That's how the system settings works.)
View 3 Replies View RelatedI work with Eclipse and implement some applications using the Android Emulator.
I'd like to know: Is it possible to extend Android APIs with other .jar file?
If it's possible, how can I extend the APIs?
I just have to add libraries to the project or do I copy it to the $ANDROID_HOME/platforms/android-8/tools/lib
I have problem with extends TabActivity.
My code is:
CODE:.................
Is there anyway I can create a dynamically filled ListView when the class does not extend ListActivity?
View 1 Replies View RelatedI am quite new to Android and Java
I am looking for example of how to use this class:
SingleLaunchActivityTestCase
Till now I am using class InstrumentationTestCase but the problem is that for each launched test case Android calling onSetup() and TearDown()
Can I use getCacheDir() only in a class that extends Activity? I would like to use it in an AsyncTask so that I can do the time intensive cache file saving in it.
View 1 Replies View RelatedI'm doing that sample: [URL] ....
I want to change at this line
public void onClick(View v) {layout.setVisibility(GONE);}
to
public void onClick(View v) {
Intent myIntentopen = new Intent(MainActivityold.class, MainActivitynew.class);
startActivity(myIntentopen);
}
but it dosn't work.
When i extends the MapActivity class it shows an error.
error is: cant resolved datatype. why?
How to add a maps.jar in my project?
Currently I'm working on a dialog which consists of title, description, tags and footer. The title can be long and in this case the text should automatically be displayed in multiple lines. The description is also longer and should fill multiple lines.
At the bottom of the dialog has to be the footer (also if the title and description don't fill whole screen).
I tried to do create the layout described about but had a problem with long text - if the content is long it doesn't display multiple lines but extends main view (LinearView) so the content extends over the visible area.
Here I'm pasting the print screen of the current state and the mockup of the desired layout:
TextView "Footer" and buttons OK and Cancel should appear at the bottom of the screen and the title ("Title Title Title...) and description text should automatically appear in multiple lines instead of extending the parent view.
I have a simple activity program in android. Basically the class just extends Activity.
But when I start it I get a ClassCastException in the constructor of my class. I don't even have a constructor defined, so it must be in the constructor of the superclass which is Activity. Unfortunately the debugger doesn't give any detailed information on what class it is trying to cast. Here is the stacktrace:
Thread [<1> main] (Suspended (exception RuntimeException))
ActivityThread$PackageInfo.makeApplication(boolean, Instrumentation) line: 649
ActivityThread.handleBindApplication(ActivityThread$AppBindData) line: 4232
ActivityThread.access$3000(ActivityThread, ActivityThread$AppBindData) line: 125
ActivityThread$H.handleMessage(Message) line: 2071
ActivityThread$H(Handler).dispatchMessage(Message) line: 99
Looper.loop() line: 123
ActivityThread.main(String[]) line: 4627
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]
Method.invoke(Object, Object...) line: 521
ZygoteInit$MethodAndArgsCaller.run() line: 868
ZygoteInit.main(String[]) line: 626
NativeStart.main(String[]) line: not available [native method]
And when I look into this runtimeexception I get:
detailMessage "Unable to instantiate application com.test.MyApp: java.lang.ClassCastException: com.test.MyApp" (id=830067694464)
The only code is:
package com.test;
import android.app.Activity;
public class MyApp extends Activity {
}
I have an app which contains an activity which is a MapviewActivity and is mostly a mapview.
However I have noticed that the start up time of the activity is really slow and causes a lag from the moment the button is pressed to go in to the map activity. I feel this creates a bad user experience and would like to avoid this.
I have already set the background of the map activity to @null as suggested by one of the UI improvement articles on googles developer page. Which I fell does not do the trick.
Is there a way to improve this? I would not like the main home screen to get stuck on the launch of the activity, even a transfer to the map activity and then loading the mapview would be better.
I created a list view in an activity and the list shows some fields.When we click a list item a custom dialog should pop up and the user can enter some new value to this field.The custom dialog contains one edit text and two buttons ok and cancel.It is working fine.But when my list is more that means if it exceeds screen size it is showing scroll.But when we select bottom items which we can select using scroll the dialog is appearing in normal fashion.But after entering new value if i am trying to save the application is getting crashed.
View 3 Replies View RelatedWhen I tried to create a ViewFlipper inside a class which extends LinearLayout, its throwing an exception
"java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()".
I am creating the ViewFlipper using,
ViewFlipper flipper = new ViewFlipper(ctContext);
But when I create the ViewFlipper in a class which extends Activity, its working normally. What may the reason?
I have a listview with custom rows and that extends SimpleAdapter.
Each row consist of two linear layouts : 1st having two textviews of which one is hidden in horizontal orientation, second having two textviews in horizontal orientation.
Now depending on the value in hidden textview , I want to setcolor for the remaining items for the row.
To put it as simple:
each listview item has some custom colors the value of which comes from the hidden field.
I have done this by overriding getview() for the simpleadapter and returning view for each, but this makes list very slow to render (and that I think is obvious as so much of work for each view before showing it).
Can I do this in some more efficient way ? like making views and then add up to list instead of using xml layout maybe one solution OR any other?
My app crashes with a null pointer exception on the code below. I have an xml preference file under res/xml/defaults.xml
public class Preference extends Activity {
public Preference() {
} public String getPreference(String key)
{ //it still crashes here
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this.getApplicationContext());
String result = settings.getString(key, null); return result;
} }
I'm doing that sample:
http:[url].....
I want to change at this line
public void onClick(View v) {layout.setVisibility(GONE);}
to
public void onClick(View v) {
Intent myIntentopen = new Intent(MainActivityold.class, MainActivitynew.class);
startActivity(myIntentopen);
}
but it dosn't work.
I 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);.............
I want to make a custom Dialog,because i donot like it"s style,i want get a rounded rectangle rather than rectangle . i know to implement it by theme in Manifest.xml . for example :the code
at activity write:
CODE:............
My question is how to implement this Similar result by extends dialog or alertDialog.
How to add listview inside scrollview ?
CODE:................
I added listview inside scroolview. But its not showing in proper way. The listview is showing only in smaller size.
I tried in most of the ways ? But i can't able to get...
I'm new to Android development and having a hard time making the UI, so hopefully someone here can help me with a hint...
What I need in my layout is this:
CODE:...............
as you can see the layout will need scrolling, but adding a scrollview as a root to the RelativeLayout tag, didnt do anything...
I've got a ScrollView containing a vertical LinearLayout.
The LinearLayout contains several items, including a ListView.
The problem is that I can't seem to get the ListView to be fully expanded. It is being compressed to fit everything on the screen, and forcing me to scroll through just the list. I would prefer to be able to scroll the entire layout, including the ListView.
I've played with the layout parameters a lot, but can't seem to get anything to work.
Also, I'm going to put this in another thread, but thought I'd ask here as well. Is there any way to force a separator at the top of a ListView?