如何获取 AlertDialog 中自定义列表视图的单击项的值？
How to get the value of clicked item of a custom listview inside the AlertDialog?
我在 AlertDialog 中创建了一个 Custom listview 并通过解析 list[=29= 设置数据].我需要获取被单击的行 的单个对象的单击 值。但是 listView.setOnItemClickListener 不起作用。我试图解决这个问题，但找不到办法。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;
}
}
这里是 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>
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();
}
});
你我不确定为什么你的代码不能工作如果你可以 post 一个非常有用的项目或者至少整个 activity ，所以这就是你可以轻松地在警告框中显示列表。
// 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();
查看完整参考资料
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
我想你需要的是：
lv.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> arg0, View arg1,int position, long arg3)
{
//element selected is yourList.get(position);
}
});
实际上，这是对这个问题的回答。我在代码中添加了 android: inputType="text" 。这是问题所在。我删除了它，然后它就完美地工作了。
<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>
答案是由 "I_A_Mok" 给出的，所有功劳都归于他。
请从您的 xml 中删除 android:inputType="text"。这将解决您的问题。谢谢
我在 AlertDialog 中创建了一个 Custom listview 并通过解析 list[=29= 设置数据].我需要获取被单击的行 的单个对象的单击 值。但是 listView.setOnItemClickListener 不起作用。我试图解决这个问题，但找不到办法。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;
}
}
这里是 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>
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();
}
});
你我不确定为什么你的代码不能工作如果你可以 post 一个非常有用的项目或者至少整个 activity ，所以这就是你可以轻松地在警告框中显示列表。
// 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();
查看完整参考资料
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
我想你需要的是：
lv.setOnItemClickListener(new OnItemClickListener(){ @Override public void onItemClick(AdapterView<?> arg0, View arg1,int position, long arg3) { //element selected is yourList.get(position); } });
实际上，这是对这个问题的回答。我在代码中添加了 android: inputType="text" 。这是问题所在。我删除了它，然后它就完美地工作了。
<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>
答案是由 "I_A_Mok" 给出的，所有功劳都归于他。
请从您的 xml 中删除 android:inputType="text"。这将解决您的问题。谢谢