multiline listview need help figuring this out

I have really tried hard for a week trying to figure out how to make multiline text in a listview. but i simply cant figure out what i am doing wrong.

tells me i need a listview named android.R.id.list but i can find anywhere in the code where i have referred to such a list.

anyone who can help would be appreciated.

Ty for your time and best regards,
Mark


i have created a list view

Code:

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<ListView
        android:id="@+id/listview2"
        android:layout_width="fill_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/AddsBannerHere"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/NameOfList"
        android:layout_toLeftOf="@+id/NameOfItem"
        android:layout_marginLeft="5dp" >

       
    </ListView>

---

and made a textview to put in the text

Code:

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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/line_a"/>
   
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/line_b"/>
   
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/line_c"/>
    </LinearLayout>

---

and wrote this for class

Code:

---

public class CreateFirst extends ListActivity {
       
        private AdView adView;
        private SimpleAdapter sa;
        ArrayList<HashMap<String,String>> list = new ArrayList<HashMap<String,String>>();

public void Add_New_Item() {
           
            HashMap<String,String> item;
           
            EditText nameofitem = (EditText) findViewById(R.id.NameOfItem);
            String stringnameofitem = nameofitem.getText().toString();
           
            item = new HashMap<String,String>();
            item.put("line1", stringnameofitem);
           
            EditText nrofitem = (EditText) findViewById(R.id.NrOfItem);
            EditText weightofitem = (EditText) findViewById(R.id.Weight_Liter);
            String stringnrofitem = nrofitem.getText().toString() + " " + weightofitem.getText().toString();
            item.put("line2", stringnrofitem);
           
            EditText valueofitem = (EditText) findViewById(R.id.Value_Of_Item);
            String stringvalueofitem = valueofitem.getText().toString();
            item.put("line3", stringvalueofitem);
            list.add( item );
           
            sa = new SimpleAdapter(this, list,
                            R.layout.activity_multi_lines,
                            new String[] {"line1", "line2","line3"},
                            new int[]{R.id.line_a, R.id.line_b, R.id.line_c});
           
            setListAdapter(sa);
    }

---

when i try to open the activity i get

Code:

---

10-22 18:53:33.053: D/gralloc_goldfish(840): Emulator without GPU emulation detected.
10-22 18:53:34.493: D/AndroidRuntime(840): Shutting down VM
10-22 18:53:34.493: W/dalvikvm(840): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
10-22 18:53:34.523: E/AndroidRuntime(840): FATAL EXCEPTION: main
10-22 18:53:34.523: E/AndroidRuntime(840): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.shopping.list.by.mp/com.shopping.list.by.mp.CreateFirst}:
java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.app.ActivityThread.access$600(ActivityThread.java:123)
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.os.Handler.dispatchMessage(Handler.java:99)
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.os.Looper.loop(Looper.java:137)
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.app.ActivityThread.main(ActivityThread.java:4424)
10-22 18:53:34.523: E/AndroidRuntime(840):        at java.lang.reflect.Method.invokeNative(Native Method)
10-22 18:53:34.523: E/AndroidRuntime(840):        at java.lang.reflect.Method.invoke(Method.java:511)
10-22 18:53:34.523: E/AndroidRuntime(840):        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
10-22 18:53:34.523: E/AndroidRuntime(840):        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
10-22 18:53:34.523: E/AndroidRuntime(840):        at dalvik.system.NativeStart.main(Native Method)
10-22 18:53:34.523: E/AndroidRuntime(840): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.app.ListActivity.onContentChanged(ListActivity.java:243)
10-22 18:53:34.523: E/AndroidRuntime(840):        at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:254)
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.app.Activity.setContentView(Activity.java:1835)
10-22 18:53:34.523: E/AndroidRuntime(840):        at com.shopping.list.by.mp.CreateFirst.onCreate(CreateFirst.java:34)
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.app.Activity.performCreate(Activity.java:4465)
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
10-22 18:53:34.523: E/AndroidRuntime(840):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
10-22 18:53:34.523: E/AndroidRuntime(840):        ... 11 more

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