在一个Android应用程序中,我想在AlertDialog中显示一个自定义列表视图。

我该怎么做呢?


当前回答

这是如何显示自定义布局对话框与自定义列表项,可以根据您的要求自定义。

步骤- 1创建对话框的布局

R.layout.assignment_dialog_list_view

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/rectangle_round_corner_assignment_alert"
    android:orientation="vertical">
    <TextView
        android:id="@+id/tv_popup_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dp"
        android:singleLine="true"
        android:paddingStart="4dp"
        android:text="View as:"
        android:textColor="#4f4f4f" />

    <ListView
        android:id="@+id/lv_assignment_users"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />
</LinearLayout>

步骤- 2创建自定义列表项布局根据您的业务逻辑

R.layout.item_assignment_dialog_list_layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:padding="4dp"
    android:orientation="horizontal">
    <ImageView
        android:id="@+id/iv_user_profile_image"
        android:visibility="visible"
        android:layout_width="42dp"
        android:layout_height="42dp" />
    <TextView
        android:id="@+id/tv_user_name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="8dp"
        android:layout_marginStart="8dp"
        android:paddingBottom="8dp"
        android:textColor="#666666"
        android:textSize="18sp"
        tools:text="ABCD XYZ" />
</LinearLayout>

步骤- 3创建一个你自己选择的数据模型类

public class AssignmentUserModel {

private String userId;
private String userName;
private String userRole;
private Bitmap userProfileBitmap;

public AssignmentUserModel(String userId, String userName, String userRole, Bitmap userProfileBitmap) {
    this.userId = userId;
    this.userName = userName;
    this.userRole = userRole;
    this.userProfileBitmap = userProfileBitmap;
}


public String getUserId() {
    return userId;
}

public void setUserId(String userId) {
    this.userId = userId;
}

public String getUserName() {
    return userName;
}

public void setUserName(String userName) {
    this.userName = userName;
}

public String getUserRole() {
    return userRole;
}

public void setUserRole(String userRole) {
    this.userRole = userRole;
}

public Bitmap getUserProfileBitmap() {
    return userProfileBitmap;
}

public void setUserProfileBitmap(Bitmap userProfileBitmap) {
    this.userProfileBitmap = userProfileBitmap;
}

}

步骤- 4创建自定义适配器

public class UserListAdapter extends ArrayAdapter<AssignmentUserModel> {
private final Context context;
private final List<AssignmentUserModel> userList;
   
public UserListAdapter(@NonNull Context context, int resource, @NonNull List<AssignmentUserModel> objects) {
    super(context, resource, objects);
    userList = objects;
    this.context = context;
 }

@SuppressLint("ViewHolder")
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View rowView = inflater.inflate(R.layout.item_assignment_dialog_list_layout, parent, false);
    ImageView profilePic = rowView.findViewById(R.id.iv_user_profile_image);
    TextView userName = rowView.findViewById(R.id.tv_user_name);
    AssignmentUserModel user = userList.get(position);

    userName.setText(user.getUserName());

    Bitmap bitmap = user.getUserProfileBitmap();

    profilePic.setImageDrawable(bitmap);

    return rowView;
}

}

步骤- 5创建这个函数,并在这个方法中提供上述数据模型的ArrayList

// Pass list of your model as arraylist
private void showCustomAlertDialogBoxForUserList(ArrayList<AssignmentUserModel> allUsersList) {
        final Dialog dialog = new Dialog(mActivity);
        dialog.setContentView(R.layout.assignment_dialog_list_view);
        if (dialog.getWindow() != null) {
            dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); // this is optional
        }
        ListView listView = dialog.findViewById(R.id.lv_assignment_users);
        TextView tv = dialog.findViewById(R.id.tv_popup_title);
        ArrayAdapter arrayAdapter = new UserListAdapter(context, R.layout.item_assignment_dialog_list_layout, allUsersList);
        listView.setAdapter(arrayAdapter);
        listView.setOnItemClickListener((adapterView, view, which, l) -> {
            Log.d(TAG, "showAssignmentsList: " + allUsersList.get(which).getUserId());
           // TODO : Listen to click callbacks at the position
        });
        dialog.show();
    }

步骤- 6给对话框圆角背景

@drawable / rectangle_round_corner_assignment_alert

    <?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="#ffffffff" />
    <corners android:radius="16dp" />
    <padding
        android:bottom="16dp"
        android:left="16dp"
        android:right="16dp"
        android:top="16dp" />
</shape>

其他回答

这太简单了

final CharSequence[] items = {"Take Photo", "Choose from Library", "Cancel"};

AlertDialog.Builder builder = new AlertDialog.Builder(MyProfile.this);

builder.setTitle("Add Photo!");
builder.setItems(items, new DialogInterface.OnClickListener() {
    @Override
    public void onClick(DialogInterface dialog, int item) {
        if (items[item].equals("Take Photo")) {
            getCapturesProfilePicFromCamera();
        } else if (items[item].equals("Choose from Library")) {
            getProfilePicFromGallery();
        } else if (items[item].equals("Cancel")) {
            dialog.dismiss();
        }
    }
});
builder.show();

在芬兰湾的科特林:

fun showListDialog(context: Context){
    // setup alert builder
    val builder = AlertDialog.Builder(context)
    builder.setTitle("Choose an Item")

    // add list items
    val listItems = arrayOf("Item 0","Item 1","Item 2")
    builder.setItems(listItems) { dialog, which ->
        when (which) {
            0 ->{
                Toast.makeText(context,"You Clicked Item 0",Toast.LENGTH_LONG).show()
                dialog.dismiss()
            }
            1->{
                Toast.makeText(context,"You Clicked Item 1",Toast.LENGTH_LONG).show()
                dialog.dismiss()
            }
            2->{
                Toast.makeText(context,"You Clicked Item 2",Toast.LENGTH_LONG).show()
                dialog.dismiss()
            }
        }
    }

    // create & show alert dialog
    val dialog = builder.create()
    dialog.show()
}

如果在AlertDialog中创建EditText单元后调用一个方法,用于一般用途,不是更流畅吗?

public static void EditTextListPicker(final Activity activity, final EditText EditTextItem, final String SelectTitle, final String[] SelectList) {
    EditTextItem.setOnLongClickListener(new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {
            AlertDialog.Builder builder = new AlertDialog.Builder(activity);
            builder.setTitle(SelectTitle);
            builder.setItems(SelectList, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialogInterface, int item) {
                    EditTextItem.setText(SelectList[item]);
                }
            });
            builder.create().show();
            return false;
        }
    });
}

您可以使用自定义对话框。

自定义对话框布局。list.xml

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

在你的活动中

Dialog dialog = new Dialog(Activity.this);
       dialog.setContentView(R.layout.list)

ListView lv = (ListView ) dialog.findViewById(R.id.lv);
dialog.setCancelable(true);
dialog.setTitle("ListView");
dialog.show();

编辑:

使用alertdialog

String names[] ={"A","B","C","D"};
AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this);
LayoutInflater inflater = getLayoutInflater();
View convertView = (View) inflater.inflate(R.layout.custom, null);
alertDialog.setView(convertView);
alertDialog.setTitle("List");
ListView lv = (ListView) convertView.findViewById(R.id.lv);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,names);
lv.setAdapter(adapter);
alertDialog.show();

custom.xml

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

</ListView>

Snap

下面的代码用于在AlertDialog中显示自定义列表

AlertDialog.Builder builderSingle = new AlertDialog.Builder(DialogActivity.this);
builderSingle.setIcon(R.drawable.ic_launcher);
builderSingle.setTitle("Select One Name:-");

final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(DialogActivity.this, android.R.layout.select_dialog_singlechoice);
arrayAdapter.add("Hardik");
arrayAdapter.add("Archit");
arrayAdapter.add("Jignesh");
arrayAdapter.add("Umang");
arrayAdapter.add("Gatti");

builderSingle.setNegativeButton("cancel", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });

builderSingle.setAdapter(arrayAdapter, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                String strName = arrayAdapter.getItem(which);
                AlertDialog.Builder builderInner = new AlertDialog.Builder(DialogActivity.this);
                builderInner.setMessage(strName);
                builderInner.setTitle("Your Selected Item is");
                builderInner.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog,int which) {
                                dialog.dismiss();
                            }
                        });
                builderInner.show();
            }
        });
builderSingle.show();