Question

我正在尝试使用自定义列表视图制作一个Dialog。但是我收到了这个错误：“指定的孩子已经有了父母。你必须首先在孩子的父母上调用removeView（）”。

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;

    }
}

我在“ dialogOut.show（）; ”上收到此错误，或者，如果我使用构建器，则会在“ dialog.create（）”。想法？

EDIT1： xml文件......

layout_config_userdata_row.xml

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

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：堆栈跟踪。

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)

在com.ztesteconfig.ConfigActivity.onClickUsoDados（ConfigActivity.java:334）它正是“dialogOut.show（）;”

Answer 1

好的，我们来看看：

您的错误消息是“指定的视图已有父级”
您的布局中有LinearLayout您未使用
您的Java代码明确忽略了LinearLayout

因此，从布局资源中删除ListView。你没有使用它。你不需要它。并且，它是您的错误的来源，因为LinearLayout 不能在对话框的内容视图中的LinearLayout 和中。

或者，如果您有一个需要LinearLayout的长期愿景，请将ListView作为对话框的内容视图，而不是LinearLayout内的{{1}} {1}}。

Answer 2

试试这个

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

Answer 3

尝试以编程方式创建列表视图。

使用

list = new ListView(getContext());

而不是

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

或

将您的xml编辑为

<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>

（为LinearLayout添加了一个id）

并在您的活动代码中

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

并将此视图设置为对话框的内容

dialogOut.setContentView(base);

带有自定义ListView的Android对话框

3 个答案: