J'ai une méthode dans laquelle j'ai une liste de valeurs:
/**
* 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");
}
Cette méthode est appliquée sur onClick () d'une ImageButton
:
Android:onClick="getISO"
Mais je dois représenter cette liste dans un dialogue avec des boutons radio. Les valeurs de préférence doivent éventuellement déjà être sélectionnées dans la boîte de dialogue. Est-ce possible?
Appelez showRadioButtonDialog()
à partir du bouton.
C'est juste un exemple:
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();
}
Votre vue de présentation: 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>
Remarque: vous pouvez personnaliser l'affichage de la boîte de dialogue (par exemple, définir le titre, le message, etc.).
Edit: Pour récupérer la valeur de la RadioButton
sélectionnée, vous devez implémenter le programme d'écoute setOnCheckedChangeListener
pour votre RadioGroup
en tant que:
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());
}
}
}
});
meilleur et facile moyen ......
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...
}
Une façon propre est comme ça:
http://developer.Android.com/guide/topics/ui/dialogs.html
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();
Lisez à propos de http://developer.Android.com/reference/Android/app/AlertDialog.Builder.html#setSingleChoiceItems(int, int, Android.content.DialogInterface.OnClickListener)
Aucune vue personnalisée n'est nécessaire.
Cochez cette case . Voici la ligne personnalisée dialog_row.xml que vous devez utiliser dans CustomAdapter:
<?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">
<RadioButton
Android:id="@+id/list"
Android:layout_width="match_parent"
Android:layout_height="wrap_content" />
</LinearLayout>
Puis dans la méthode onclick:
@Override
public void onClick(View arg0) {
// custom dialog
final Dialog dialog = new Dialog(context);
dialog.setContentView(R.layout.custom_layout); //Your custom layout
dialog.setTitle("Title...");
Listview listview= (ListView) dialog.findViewById(R.id.listview);
CustomAdapter adapter=new CustomAdapter(context,your_list);
listview.setadapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//Do something
}
});
dialog.show();
}
Cela a fonctionné pour moi:
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();
lorsque vous souhaitez afficher les données de la base de données SQLIte
private void showRadioButtonDialog() {
// custom dialog
final Dialog dialog = new Dialog(this);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.radiobutton_dialog);
List<String> stringList=new ArrayList<>(); // here is list
if (cursor.moveToFirst()) {
do {
String a=( cursor.getString(0).toString());
String b=(cursor.getString(1).toString());
String c=(cursor.getString(2).toString());
String d=(cursor.getString(3).toString());
stringList.add(d);
} while (cursor.moveToNext());
}
RadioGroup rg = (RadioGroup) dialog.findViewById(R.id.radio_group);
for(int i=0;i<stringList.size();i++) {
RadioButton rb=new RadioButton(this); // dynamically creating RadioButton and adding to RadioGroup.
rb.setText(stringList.get(i));
rg.addView(rb);
}
dialog.show();
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) {
Toast.makeText(getApplicationContext(), btn.getText().toString(), Toast.LENGTH_SHORT).show();
}
}
}
});
}