Question

我已经在 AlertDialog 中创建了自定义列表视图，并通过解析列表设置了数据。我需要获取该点击行的单个对象的点击值。但是 listView.setOnItemClickListener 无法正常工作。我试图解决此问题，但找不到方法。请帮我解决这个问题。

谢谢 ..

这是我的代码

AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
            builder.setTitle("Select A Customer");
            //insert array to constructor
            LayoutInflater inflater = getActivity().getLayoutInflater();
            View dialogLayout = inflater.inflate(R.layout.product_list_pop_up, null);
            final CustomerPopupAdapter testAdapter = new CustomerPopupAdapter(getContext(), customers_data);
            ListView listView = dialogLayout.findViewById(R.id.product_list_view);
            TextView cancel_btn = dialogLayout.findViewById(R.id.cancel_btn);
            TextView done_btn = dialogLayout.findViewById(R.id.done_btn);
            listView.setAdapter(testAdapter);

            builder.setView(dialogLayout);

            final AlertDialog alert = builder.create();
            alert.show();

            listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

                    Log.d("selected Item", "ListView ");
//                    customerName = testAdapter.getItem(position);
//                    customer_name.setText((CharSequence) testAdapter.getItem(position));
                    alert.dismiss();
                }
            });
         alert.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
            WindowManager.LayoutParams lp = new WindowManager.LayoutParams();

            cancel_btn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    alert.dismiss();
                }
            });

            done_btn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    alert.dismiss();
                }
            });

这是我的适配器

public class CustomerPopupAdapter extends ArrayAdapter<Customer> {

    private List<Customer> list;

    public CustomerPopupAdapter(Context context, List<Customer> test) {
        super(context, R.layout.discount_popup_row, test);
        this.list = test;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = LayoutInflater.from(getContext());

        final Customer customer = list.get(position);
        View customRow = inflater.inflate(R.layout.customer_popup_row, parent, false);

        TextView customer_name = customRow.findViewById(R.id.customer_name);
        TextView customer_id = customRow.findViewById(R.id.customer_id);

        customer_id.setText(customer.getId());
        customer_name.setText(customer.getName());

        return customRow;
    }
}

这是custom_row.xml

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="@dimen/activity_margin_10dp"
        android:weightSum="3">

        <TextView
            android:id="@+id/customer_name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginRight="10dp"
            android:text="Username"
            android:inputType="text"
            android:layout_weight="1"
            android:textColor="@color/colorBlack"
            android:textSize="@dimen/text_size_18sp" />


        <TextView
            android:id="@+id/customer_id"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginRight="10dp"
            android:text="id"
            android:inputType="text"
            android:layout_weight="2"
            android:textColor="@color/colorBlack"
            android:textSize="@dimen/text_size_18sp" />
    </LinearLayout>

    <View
        android:id="@+id/bottom_border"
        android:layout_width="match_parent"
        android:layout_height="0.8dp"
        android:layout_marginTop="@dimen/activity_margin_5dp"
        android:background="@color/colorGrey" />

</LinearLayout>

Answer 1

使用您的customers_data列表获取点击值。

           listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    Log.d("selected Item", customers_data.get(position));
                    alert.dismiss();
                }
            });

Answer 2

如果您可以发布对项目真的很有帮助的项目，或者至少发布整个活动，那么我不确定您的代码为什么不起作用，因此您可以轻松地在警报框中显示列表。

// setup the alert builder
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("Choose an animal");

// add a list
String[] animals = {"horse", "cow", "camel", "sheep", "goat"};
builder.setItems(animals, new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int which) {
        switch (which) {
            case 0: // horse
            case 1: // cow
            case 2: // camel
            case 3: // sheep
            case 4: // goat
        }
    }
});

// create and show the alert dialog
AlertDialog dialog = builder.create();
dialog.show();

查看完整的参考文献https://stackoverflow.com/a/43532478/9638167

Answer 3

不要使用ListView，请阅读：Should we use RecyclerView to replace ListView?和Google上的其他材料，RecyclerView是必经之路

我认为您需要的是：

lv.setOnItemClickListener(new OnItemClickListener(){

@Override 
public void onItemClick(AdapterView<?> arg0, View arg1,int position, long arg3)
{ 
    //element selected is yourList.get(position);
}
});

Answer 4

实际上，这是此问题的答案。我已经在代码中添加了 android: inputType="text" 。是问题所在。我将其删除，然后可以正常运行。

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="@dimen/activity_margin_10dp"
        android:weightSum="3">

        <TextView
            android:id="@+id/customer_name"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginRight="10dp"
            android:text="Username"
            android:layout_weight="1"
            android:textColor="@color/colorBlack"
            android:textSize="@dimen/text_size_18sp" />


        <TextView
            android:id="@+id/customer_id"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginRight="10dp"
            android:text="id"
            android:layout_weight="2"
            android:textColor="@color/colorBlack"
            android:textSize="@dimen/text_size_18sp" />
    </LinearLayout>

    <View
        android:id="@+id/bottom_border"
        android:layout_width="match_parent"
        android:layout_height="0.8dp"
        android:layout_marginTop="@dimen/activity_margin_5dp"
        android:background="@color/colorGrey" />

</LinearLayout>

答案由“ I_A_Mok”给出，所有功劳都归他所有。

Answer 5

请从您的xml中删除android:inputType="text"。这将解决您的问题。谢谢。

如何获取AlertDialog中自定义列表视图的单击项的值？

5 个答案: