Da Sie davon ausgehen, dass alles gut geladen ist, wird kein Klickereignis ausgelöst. Bevor ich anfange, habe ich so viele Threads darüber gelesen, aber ich kann es für mein ganzes Leben nicht herausfinden. Hier ist der Code.

activity_main.xml (Hauptlayout zum Aufrufen der Liste)

<LinearLayout
    android:orientation="vertical" 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

     <ListView
         android:id="@android:id/list"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"

         />

</LinearLayout>

list_mainsegments_row.xml (Benutzerdefinierte Zeile)

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:clickable="true"
        android:orientation="horizontal" 
        >

        <ImageView
            android:id="@+id/iconView"
            style="@style/generalPagesLogoStyle"
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:layout_margin="@dimen/tendpPadding"
            android:scaleType="fitCenter"
            android:src="@drawable/ic_launcher" />

        <TextView
            android:id="@+id/titleMainSegments"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="left|center_vertical"
            android:layout_weight="0.5"
            android:text="Medium Text"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:textSize="@dimen/generalTextSize"
             />

        <ImageButton
            android:id="@+id/imageButton1"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:layout_gravity="center_vertical"
            android:scaleType="fitCenter"
            android:src="@drawable/arrow" />
    </LinearLayout>

MyAdapter.java

   public class MyAdapter extends ArrayAdapter<String> {

    public MyAdapter(Context context, int resource, int textViewResourceId,
            String[] strings) {
        super(context, resource, textViewResourceId, strings);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = LayoutInflater.from(getContext());
        // This is a single row
        View row = inflater.inflate(R.layout.list_mainsegments_row, parent,
                false);
        String[] items = getContext().getResources().getStringArray(
                R.array.segments_main);
        ImageView iv = (ImageView) row.findViewById(R.id.iconView);
        TextView tv = (TextView) row.findViewById(R.id.titleMainSegments);
        tv.setText(items[position]);
        organiseLayout(position, items, iv);
        return row;

    }

    private void organiseLayout(int position, String[] items, ImageView iv) {
        if (items[position].equals(getContext().getResources().getString(
                R.string.segment_one))) {
            iv.setImageResource(R.drawable.img1);
        }
        if (items[position].equals(getContext().getResources().getString(
                R.string.segment_two))) {
            iv.setImageResource(R.drawable.img2);
        }
    }
}

MainActivity.java

public class MainActivity extends ListActivity implements OnItemClickListener {

private MyAdapter mAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mAdapter = new MyAdapter(this, android.R.layout.simple_list_item_1,
            R.id.titleMainSegments, getResources().getStringArray(
                    R.array.segments_main));

    setListAdapter(mAdapter);
    getListView().setOnItemClickListener(this);

}

public void onItemClick(AdapterView<?> parent, View view,
        int position, long id) {
    CharSequence text = "Item clicked";
    int duration = Toast.LENGTH_SHORT;
    Toast toast = Toast.makeText(this, text, duration);
    toast.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL,
            duration, duration);
    toast.show();
} }

Es liegt kein Fehler vor, sodass das logCat-Protokoll nicht hilfreich ist. Alles läuft gut, aber beim Tippen auf ListView wird kein Toast angezeigt.

Bearbeiten:

style.xml:

<!-- Global styles -->
    <style name="horizLayoutHolder">
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_gravity">center_horizontal</item>
    </style>

    <!-- This is for the text based pages -->
    <style name="general_pages">
        <item name="android:layout_width">fill_parent</item>
        <item name="android:layout_height">fill_parent</item>
        <item name="android:orientation">vertical</item>
        <item name="android:paddingBottom">@dimen/generalPadding</item>
        <item name="android:paddingLeft">@dimen/generalPadding</item>
        <item name="android:paddingRight">@dimen/generalPadding</item>
        <item name="android:paddingTop">@dimen/tendpPadding</item>
    </style>

    <style name="generalPagesTitleStyle">
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_marginBottom">@dimen/tendpPadding</item>
        <item name="android:textColor">#000</item>
        <item name="android:textSize">@dimen/generalHeadingTextSize</item>
        <item name="android:textStyle">bold</item>
    </style>

    <style name="generalPageScrollView">
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
    </style>

    <style name="generalPageMainText">
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:textColor">#000</item>
        <item name="android:textSize">@dimen/generalSmallFontSize</item>
    </style>

    <style name="generalPagesLogoStyle">
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:layout_marginBottom">@dimen/tendpPadding</item>
"                <item name="android:src">@drawable/mainlogo</item>
    </style>

    <style name="generalActionButton">
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">40dp</item>
        <item name="android:layout_gravity">center_horizontal</item>
        <item name="android:textSize">@dimen/generalVerySmallFontSize</item>
        <item name="android:paddingRight">@dimen/generalPadding</item>
        <item name="android:paddingLeft">@dimen/generalPadding</item>
    </style>

    <style name="generalTextBoxes">
        <item name="android:layout_width">250dp</item>
        <item name="android:layout_height">50dp</item>
        <item name="android:layout_gravity">center_horizontal</item>
        <item name="android:ems">10</item>
        <item name="android:textSize">@dimen/generalSmallFontSize</item>
    </style>

    <!-- End of General / Full text based activities -->


    <!-- I have used this in theme.xml -->
    <style name="windowTitleBackgroundStyle">
        <item name="android:background">#CCCCCC</item>
    </style>

    <style name="windowTitleStyle">
        <item name="android:textColor">#000000</item>
        <item name="android:padding">12dip</item>
        <item name="android:textStyle">bold</item>
        <item name="android:textSize">16sp</item>
    </style>
    <!-- End of Theme.xml stuff -->

themes.xml

<style name="Theme.myTheme.TitleBar" parent="android:Theme">
    <item name="android:windowTitleBackgroundStyle">@style/windowTitleBackgroundStyle</item>
    <item name="android:windowTitleStyle">@style/windowTitleStyle</item>
    <item name="android:windowTitleSize">50dip</item>
    <item name="android:background">#F8C845</item>
    <item name="android:textColor">#555</item>
</style>