在Android中选择项目后如何关闭弹出列表视图答案

【问题标题】：How to close a pop up list view after selecting an item in Android在Android中选择项目后如何关闭弹出列表视图
【发布时间】：2017-11-29 05:02:17
【问题描述】：

单击某个项目后尝试关闭列表视图。 listview 会弹出一个项目列表，在我单击一个项目后，它会停留在那里。 dialog.dismiss() 或 listviews 有类似的东西吗？

     final ListView lvUser = new ListView(this);
    userList = tmDB.getAllUsers();
    final AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle(R.string.selectUser);
    ArrayAdapter<String> arrayAdapter = new ArrayAdapter<>(MainActivity.this, android.R.layout.simple_list_item_1, userList);
    lvUser.setAdapter(arrayAdapter);
    builder.setView(lvUser);

    //when user selects item
    lvUser.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            String name = userList.get(position);
            int userID;
            userID = tmDB.getUserId(name);
            txtName.setText(name);
// close the list view after selecting an item
        }
    });

【问题讨论】：

您是否尝试过关闭 listView click 上的对话框？？
查看我更新的帖子，它会对你有所帮助

标签： java android sqlite listview

【解决方案1】：

你必须使用like

 public AlertDialog alertDialog;

        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle(R.string.selectUser);
        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(Main3Activity.this, android.R.layout.simple_list_item_1, userList);
        lvUser.setAdapter(arrayAdapter);
        builder.setView(lvUser);

        //when user selects item
        lvUser.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                String name = userList.get(position);
                int userID;
                userID = tmDB.getUserId(name);
                txtName.setText(name);
// close the list view after selecting an item
                alertDialog.dismiss();

            }
        });

        alertDialog = builder.create();
        alertDialog.show();

【讨论】：

【解决方案2】：

AlertDialog.Builder 有两个 builder.setPositiveButton 和 builder.setNegativeButton() 方法来使用它。或者您需要使用简单的对话框来自定义视图。

【讨论】：

【解决方案3】：

您创建了警报对话框和 Alert.dismiss()

 final AlertDialog.Builder builder;
 AlertDialog alert;
 final ListView lvUser = new ListView(this);
 userList = tmDB.getAllUsers();
 builder = new AlertDialog.Builder(this);
 builder.setTitle(R.string.selectUser);
 ArrayAdapter<String> arrayAdapter = new ArrayAdapter<>(MainActivity.this, android.R.layout.simple_list_item_1, userList);
 lvUser.setAdapter(arrayAdapter);
 //when user selects item
 lvUser.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        String name = userList.get(position);
        int userID;
        userID = tmDB.getUserId(name);
        txtName.setText(name);
    // This!!
    if(alert != null){
        alert.dismiss();
    }
    }
 });
 builder.setView(lvUser);
 alert = builder.create
 alert.show();

【讨论】：

AlertDialog.Builder 不包含解除方法
编辑代码。警报创建和此警报解除（）

【解决方案4】：

使用 AlertDialog 实例可以关闭弹出窗口，通过 AlertDialog.Builder 无法实现

最终的 AlertDialog 对话框； final AlertDialog.Builder alertDialog = new AlertDialog.Builder(LoginScreen.this); alertDialog.setCancelable(true); alertDialog.setTitle("日期列表");

            ListView listView = new ListView(getApplicationContext());
            final String[] listOfDays = {"MONDAY","TUESDAY","WEDNESDAY","THURSDAY","FRIDAY","SATURDAY","SUNDAY"};
            final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(LoginScreen.this, android.R.layout.simple_list_item_1, listOfDays);
            listView.setAdapter(arrayAdapter);
            alertDialog.setView(listView);

            dialog = alertDialog.create();

            listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    Toast.makeText(LoginScreen.this,arrayAdapter.getItem(position)+" CLICKED",Toast.LENGTH_LONG).show();
                    dialog.dismiss();
                }
            });

            dialog.show();

【讨论】：