listview simple example not working

[Johnny TwoShoes]

Hi,

I've got a simple listview that displays two strings twin1 and twin2. Twin is defined as:

public class Twin {

    public Twin(String twin1, String twin2) {

        this.twin1 = twin1;

        this.twin2 = twin2;

    }

    public String getTwin1() {

        return twin1;

    }

    public void setTwin1(String twin1) {

        this.twin1 = twin1;

    }

    public String getTwin2() {

        return twin2;

    }

    public void setTwin2(String twin2) {

        this.twin2 = twin2;

    }

    private String twin1;

    private String twin2;

}

and ViewModel:

@PresentationModel

public class MainActivityViewModel {

    private static final String SELECTED_SOURCE_INDEX = "selectedSourceIndex";

    private List<Twin> twins;

    public MainActivityViewModel() {

        twins=Lists.newArrayList();

        twins.add(new Twin("John","James"));

        twins.add(new Twin("Jack","Joseph"));

        twins.add(new Twin("Jane","Jo"));

        twins.add(new Twin("James","Joe"));

    }

    public int getSelectedSourceIndex() {

        return selectedSourceIndex;

    }

    public void setSelectedSourceIndex(int selectedSourceIndex) {

        this.selectedSourceIndex = selectedSourceIndex;

        Log.d("mypp", "setSelectedSourceIndex CALLED: "+selectedSourceIndex);

    }

    private int selectedSourceIndex;

    @ItemPresentationModel(value= TwinItemPresentationModel.class)

    public List<Twin> getDynamicTwins()

    {

        Log.d("mypp", "getDynamicStrings CALLED");

        return twins;//SampleStrings.getSample();

    }

    public void onItemSelected(ItemClickEvent event) {

        Log.d("mypp", "onItemSelected CALLED: "+event.getPosition());

        //setDynamicStrings(getDynamicStrings().get(event.getPosition()));

    }

    public void setDynamicTwins(List<Twin> twins) {

        this.twins = twins;

    }

}

TwinItemPresentationModel:

public class TwinItemPresentationModel implements ItemPresentationModel<Twin> {

    public Twin getTwin() {return twin;}

    public void setTwin(Twin twin) { this.twin = twin;}

    private Twin twin;

    @Override

    public void updateData(Twin twin, ItemContext itemContext) {  this.twin = twin; }

}

row_item_layout:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:bind="http://robobinding.org/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="horizontal"

    android:background="@drawable/my_list_selector_background">

    <EditText

        android:layout_width="100dp"

        android:layout_height="wrap_content"

        bind:text="${twin1}"

        android:id="@+id/edtComment"

        android:layout_weight="1" />

    <TextView

        android:id="@+id/txtDesc"

        bind:text="{twin2}"

        android:layout_width="100dp"

        android:layout_height="wrap_content"

        android:layout_weight="1" />

</LinearLayout>

and the main xml:

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    xmlns:tools="http://schemas.android.com/tools"

    xmlns:bind="http://robobinding.org/android" >

    <ListView

        bind:itemLayout="@layout/row_item_layout"

        bind:source="{twins}"

        bind:selectedItemPosition="${selectedSourceIndex}"

    android:layout_height="wrap_content"

    android:layout_width="wrap_content" />

</RelativeLayout>

but, when I run it, I get error:

source: No such dataSet property 'info.androidhive.tabsswipe.ViewModel.MainActivityViewModel.twins'

any ideas? Also, bind:selectedItemPosition="${selectedSourceIndex}" doesn't work? How do I know what is the value of index?

regards

[cheng]

Hi Johnny,

If you check the error message carefully, you will know it is complaining it could not find twins property, which is info.androidhive.tabsswipe.

ViewModel.MainActivityViewModel.getTwins(). Where your one is info.androidhive.tabsswipe.ViewModel.MainActivityViewModel.getDynamicTwins(). To use RoboBinding, you will have to have a good self-learning and self-issue shooting capability, as it is open source. Otherwise, i will suggest you to use libraries from Android official.

Cheers,
Cheng

在 2015年12月29日星期二 UTC+11上午1:32:56，Johnny TwoShoes写道：

[Johnny TwoShoes]

ok thanks. And regarding why bind:selectedItemPosition="${selectedSourceIndex}" doesn't work? Any ideas?

[wei cheng]

Is it working in Gallery sample?

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[Johnny TwoShoes]

Hi Cheng,

Sorry. I will check and get back to you.

kind regards

[Johnny TwoShoes]

Hi Cheng, 

bind:onItemClick is working fine, on the listview,so , I didn't bother with bind:selectedItemPosition="${selectedSourceIndex}", though, I will go back to it soon, and check out your example.

kind regards