How do i create a listview object Android

Question

Hi so what im trying to do is when the player loses the game a highscore list comes up taking up half the screen in the form of a listView. Im trying to work with a listview object inflated from my xml im not sure how to do this though.

I have tried:

LayoutInflater inflater = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

ListView lv = (ListView) inflater.inflate(R.id.highscores,null);

but it keeps telling me lv is null

heres my xml:

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>

<com.SpaceShot.single android:id="@+id/single1"
 android:layout_width="wrap_content" 
 android:layout_height="wrap_content">

 </com.SpaceShot.single>

<ListView android:id="@+id/highScores"
 android:layout_width="wrap_content"
 android:layout_height="200dp"
 android:padding="15dp"
 android:visibility= "invisible"
 >
</ListView>
</FrameLayout>

EDIT:

Now inflating the ListView works but i get this error:

03-15 23:05:01.351: ERROR/AndroidRuntime(2555): Uncaught handler: thread Thread-11 
exiting due to uncaught exception
03-15 23:05:01.371: ERROR/AndroidRuntime(2555): android.view.InflateException: Binary
 XML file line #9: Error inflating class java.lang.reflect.Constructor
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at 
android.view.LayoutInflater.createView(LayoutInflater.java:512)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at
android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:564)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at 
android.view.LayoutInflater.rInflate(LayoutInflater.java:617)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at 
android.view.LayoutInflater.inflate(LayoutInflater.java:407)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at 
android.view.LayoutInflater.inflate(LayoutInflater.java:320)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at
android.view.LayoutInflater.inflate(LayoutInflater.java:276)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at 
com.SpaceShot.single$singleThread.doDraw(single.java:503)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at 
com.SpaceShot.single$singleThread.run(single.java:1754)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555): 
Caused by: 
java.lang.reflect.InvocationTargetException
03-15 23:05:01.371: ERROR/AndroidRuntime(2555): at com.SpaceShot.single.<init>
(single.java:1922)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):  at 
java.lang.reflect.Constructor.constructNative(Native Method)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at     
java.lang.reflect.Constructor.newInstance(Constructor.java:446)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at 
android.view.LayoutInflater.createView(LayoutInflater.java:499)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     ... 7 more
03-15 23:05:01.371: ERROR/AndroidRuntime(2555): 
Caused by: java.lang.RuntimeException:
Can't create handler inside thread that has not called Looper.prepare()
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at android.os.Handler.<init>
(Handler.java:121)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at android.view.SurfaceView$1.
<init>(SurfaceView.java:107)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     at android.view.SurfaceView.<init>
(SurfaceView.java:105)
03-15 23:05:01.371: ERROR/AndroidRuntime(2555):     ... 11 more

So you are getting an error when you inflating the listview? — iTurki
– iTurki, Commented Mar 16, 2012 at 2:41
my errors a nullpointer on listview and i added the inflater code. also incase this makes any difference im doing this inside of my single class and i have already inflated the xml singleplayer in my activity once. — MikeC
– MikeC, Commented Mar 16, 2012 at 2:43

hungr · Accepted Answer · 2012-03-16 03:00:50Z

2

LayoutInflater is used to inflate a layout , so you need to do the following to get the correct result:

LayoutInflater inflater = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

View layout = (View)inflater.inflate(R.layout.your_layout,null);

ListView v = (ListView)layout.findViewById(R.id.highscores);

answered Mar 16, 2012 at 3:00

hungr

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6 Comments

MikeC Over a year ago

thank you now im getting a different error though ill post in my original post

hungr Over a year ago

For your 2nd issue, as you can see from the stacktrace that issue probably is caused by that custom view, you may need to post some of your code in that class in order to tackle the issue ;)

MikeC Over a year ago

its over 2000 lines the thing is though that it inflates without error when i do it in my activity

hungr Over a year ago

Please have a look into the codes around line 1922 in single.java. From the stacktrace: "Can't create handler inside thread that has not called Looper.prepare()". Error Probably caused by this, hopes this help you

MikeC Over a year ago

what is a invocation targetexception?

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