使用单选按钮列表创建自定义对话框

Question

我有一个方法,我有一个值列表:

     /**
     * ISO
     * */
    public void getISO(View view) {
        // Open dialog with radio buttons
        List<String> supported_isos = preview.getSupportedISOs();
        SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(MainActivity.this);
        String current_iso = sharedPreferences.getString(MainActivity.getISOPreferenceKey(), "auto");

    }

此方法在onClick()上显示ImageButton:

android:onClick="getISO"

但我需要在带有单选按钮的对话框中显示此列表.可能已在对话框中选择了首选项值.是否可能？

Answer 1

最好的方式......

void dialog(){

        AlertDialog.Builder alt_bld = new AlertDialog.Builder(this);
        //alt_bld.setIcon(R.drawable.icon);
        alt_bld.setTitle("Select a Group Name");
        alt_bld.setSingleChoiceItems(grpname, -1, new DialogInterface
                .OnClickListener() {
            public void onClick(DialogInterface dialog, int item) {
                Toast.makeText(getApplicationContext(),
                        "Group Name = "+grpname[item], Toast.LENGTH_SHORT).show();
                dialog.dismiss();// dismiss the alertbox after chose option

            }
        });
        AlertDialog alert = alt_bld.create();
        alert.show();


///// grpname is a array where data is stored... 


    }

Answer 2

showRadioButtonDialog()从按钮拨打电话.

这只是一个例子:

private void showRadioButtonDialog() {

        // custom dialog
        final Dialog dialog = new Dialog(mActivity);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setContentView(R.layout.radiobutton_dialog);
        List<String> stringList=new ArrayList<>();  // here is list 
        for(int i=0;i<5;i++) {
            stringList.add("RadioButton " + (i + 1));
        }
        RadioGroup rg = (RadioGroup) dialog.findViewById(R.id.radio_group);

            for(int i=0;i<stringList.size();i++){
                RadioButton rb=new RadioButton(mActivity); // dynamically creating RadioButton and adding to RadioGroup.
                rb.setText(stringList.get(i));
                rg.addView(rb);
            }

        dialog.show();

    }

您的布局视图:radiobutton_dialog.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">

    <RadioGroup

        android:id="@+id/radio_group"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"


        android:layout_gravity="center_vertical"
        android:orientation="vertical">


    </RadioGroup>
</LinearLayout>

注意:您可以自定义对话框视图(如设置标题,消息等)

编辑: 要检索所选的值,RadioButton您必须setOnCheckedChangeListener为您的RadioGroupas 实现侦听器:

 rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                 int childCount = group.getChildCount();
                 for (int x = 0; x < childCount; x++) {
                    RadioButton btn = (RadioButton) group.getChildAt(x);
                    if (btn.getId() == checkedId) {
                         Log.e("selected RadioButton->",btn.getText().toString());

                    }
                 }
            }
        });

Answer 3

干净的方式是这样的:

http://developer.android.com/guide/topics/ui/dialogs.html

摘录自(添加持久性多项选择或单项选择列表)

mSelectedItems = new ArrayList();  // Where we track the selected items
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
// Set the dialog title
builder.setTitle(R.string.pick_toppings)
// Specify the list array, the items to be selected by default (null for none),
// and the listener through which to receive callbacks when items are selected
       .setMultiChoiceItems(R.array.toppings, null,
                  new DialogInterface.OnMultiChoiceClickListener() {
           @Override
           public void onClick(DialogInterface dialog, int which,
                   boolean isChecked) {
               if (isChecked) {
                   // If the user checked the item, add it to the selected items
                   mSelectedItems.add(which);
               } else if (mSelectedItems.contains(which)) {
                   // Else, if the item is already in the array, remove it 
                   mSelectedItems.remove(Integer.valueOf(which));
               }
           }
       })
// Set the action buttons
       .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
           @Override
           public void onClick(DialogInterface dialog, int id) {
               // User clicked OK, so save the mSelectedItems results somewhere
               // or return them to the component that opened the dialog
               ...
           }
       })
       .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
           @Override
           public void onClick(DialogInterface dialog, int id) {
               ...
           }
       });

return builder.create();

阅读 http://developer.android.com/reference/android/app/AlertDialog.Builder.html#setSingleChoiceItems(int,int,android.content.DialogInterface.OnClickListener)

无需自定义视图.

Answer 4

这对我有用：

final CharSequence[] items = {"Option-1", "Option-2", "Option-3", "Option-4"};

AlertDialog.Builder builder = new AlertDialog.Builder(ShowDialog.this);
builder.setTitle("Alert Dialog with ListView and Radio button");
builder.setIcon(R.drawable.icon);
builder.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int item) {
 Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
    }
});

builder.setPositiveButton("Yes",
 new DialogInterface.OnClickListener() {
  public void onClick(DialogInterface dialog, int id) {
   Toast.makeText(ShowDialog.this, "Success", Toast.LENGTH_SHORT).show();
  }
 });
builder.setNegativeButton("No",
 new DialogInterface.OnClickListener() {
  public void onClick(DialogInterface dialog, int id) {
   Toast.makeText(ShowDialog.this, "Fail", Toast.LENGTH_SHORT).show();
  }
 });
AlertDialog alert = builder.create();
alert.show();

Answer 5

科特林版本：

fun dialog() {
    val options = arrayOf("option1", "option2")
    var selectedItem = 0
    val builder = AlertDialog.Builder(this)
    builder.setTitle("Select an option")
    builder.setSingleChoiceItems(options
            , 0, { dialogInterface: DialogInterface, item: Int ->
        selectedItem = item
    })
    builder.setPositiveButton(R.string.accept, { dialogInterface: DialogInterface, p1: Int ->
        Toast.makeText(getApplicationContext(),
                "selected item = " + options[selectedItem], Toast.LENGTH_SHORT).show();
        dialogInterface.dismiss()
    })
    builder.setNegativeButton(R.string.cancel, { dialogInterface: DialogInterface, p1: Int ->
        dialogInterface.dismiss()
    })
    builder.create()
    builder.show();
}