Android Dialog With Custom ListView

Question

I am trying to make a Dialog with a custom listview inside. But I am getting this error: "The specified child already has a parent. You must call removeView() on the child's parent first".

ActivityCode:

public class ConfigActivity extends ActionBarActivity {

    //... onCreate and blablabla

    public void onClickUsoDados(View view) {
        final ArrayList<CustomItem> data = init();//init() just get some data

        CustomListAdapter adapter = new CustomListAdapter(this, data);

        View v = ConfigActivity.this.getLayoutInflater().inflate(R.layout.layout_config_userdata_listview, null, true);

        list = (ListView) v.findViewById(R.id.listView1);
        list.setAdapter(adapter);

        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                                    int position, long id) {
                String Slecteditem = data.get(position).nome;
                Toast.makeText(ConfigActivity.this, Slecteditem, Toast.LENGTH_SHORT).show();

            }
        });

        final Dialog dialogOut = new Dialog(ConfigActivity.this);

        dialogOut.setContentView(list);
        dialogOut.setCancelable(true);
        dialogOut.setTitle("Dados");
        dialogOut.buNeutralButton("Voltar",
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialogOut.dismiss();
                    }
                });

        dialogOut.show();
    }
}   

CustomItem.java

public class CustomItem {
    public String usuario;
    public String nome;
    public String curso;
}

CustomListAdapter.java

public class CustomListAdapter extends ArrayAdapter<CustomItem> {

    private Activity context;
    private ArrayList<CustomItem> data;

    public CustomListAdapter(Activity context, ArrayList<CustomItem> item) {
        super(context, R.layout.layout_config_userdata_row, item);

        this.context = context;
        this.data = item;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        CustomItem user = getItem(position);

        if (convertView == null) {
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.layout_config_userdata_row, parent, true);
        }

        TextView uUsername = (TextView) convertView.findViewById(R.id.textViewListViewUsuario);
        TextView uName = (TextView) convertView.findViewById(R.id.textViewListViewNome);
        TextView uCurso = (TextView) convertView.findViewById(R.id.textViewListViewCurso);

        uUsername.setText(user.usuario);
        uName.setText(user.nome);
        uCurso.setText(user.curso);
        return convertView;

    }
}

I am getting this error on "dialogOut.show();", or, if I use the builder, I get this error on "dialog.create()". Thoughts?

EDIT1: The xml files...

layout_config_userdata_row.xml

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

    <LinearLayout <!--stuff-->>
        <LinearLayout <!--stuff-->>
            <LinearLayout <!--stuff-->>
                <TextView <!--stuff-->/>
                <TextView
                    android:id="@+id/textViewListViewUsuario"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="userToLogin"
                    android:textAppearance="?android:attr/textAppearanceMedium" />
            </LinearLayout>
        </LinearLayout>

        <LinearLayout <!--stuff-->>
            <LinearLayout <!--stuff-->>
                <TextView <!--stuff-->/>
                <TextView
                    android:id="@+id/textViewListViewNome"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="nomeUser"
                    android:textAppearance="?android:attr/textAppearanceMedium" />
            </LinearLayout>
        </LinearLayout>

        <LinearLayout <!--stuff-->>
            <LinearLayout <!--stuff-->>
                <TextView <!--stuff-->/>
                <TextView
                    android:id="@+id/textViewListViewCurso"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="cursoNome"
                    android:textAppearance="?android:attr/textAppearanceMedium" />
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>

    <FrameLayout <!--stuff-->>
        <ImageView <!--stuff-->/>
    </FrameLayout>
</LinearLayout>

And the layout_config_userdata_listview.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>
</LinearLayout>

EDIT2: The stack trace.

09-29 12:50:24.073  19813-19813/com.ztesteconfig E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.IllegalStateException: Could not execute method of the activity
            at android.view.View$1.onClick(View.java:3680)
            at android.view.View.performClick(View.java:4191)
            at android.view.View$PerformClick.run(View.java:17229)
            at android.os.Handler.handleCallback(Handler.java:615)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4960)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.reflect.InvocationTargetException
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at android.view.View$1.onClick(View.java:3675)
            at android.view.View.performClick(View.java:4191)
            at android.view.View$PerformClick.run(View.java:17229)
            at android.os.Handler.handleCallback(Handler.java:615)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4960)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
            at android.view.ViewGroup.addViewInner(ViewGroup.java:3439)
            at android.view.ViewGroup.addView(ViewGroup.java:3310)
            at android.view.ViewGroup.addView(ViewGroup.java:3286)
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:337)
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:327)
            at android.app.Dialog.setContentView(Dialog.java:480)
            at com.ztesteconfig.ConfigActivity.onClickUsoDados(ConfigActivity.java:334)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at android.view.View$1.onClick(View.java:3675)
            at android.view.View.performClick(View.java:4191)
            at android.view.View$PerformClick.run(View.java:17229)
            at android.os.Handler.handleCallback(Handler.java:615)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:4960)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:511)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805)
            at dalvik.system.NativeStart.main(Native Method)

at com.ztesteconfig.ConfigActivity.onClickUsoDados(ConfigActivity.java:334) it is the exactly "dialogOut.show();"

Answer 1

Try creating the list view programatically..

use

list = new ListView(getContext());

instead of

list = (ListView) v.findViewById(R.id.listView1);

OR

edit your xml as

<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/base_view">
     <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>
</LinearLayout>

(added an id to LinearLayout)

and in your activity code

LinearLayout base=v.findViewById(R.id.base_view);

and set this view as content of dialog

dialogOut.setContentView(base);

Answer 2

OK, so, let's review:

• Your error message is "the specified view already has a parent"

• Your layout has a LinearLayout that you are not using

• Your Java code is specifically ignoring that LinearLayout

So, get rid of the LinearLayout from the layout resource. You are not using it. You do not need it. And, it is the source of your error, as the ListView cannot both be in the LinearLayout and in the content view of the dialog.

Alternatively, if you have a long-term vision in which you will need that LinearLayout, put the LinearLayout as the content view of the dialog, not the ListView inside the LinearLayout.

Answer 3

Try this

if(view.getParent()!=null)
((ViewGroup)view.getParent()).removeView(v);