Aggiungi icona Context Menu in Android

Question

Ho un Listview con un ContextMenu, ma quando ho SetIcon per ContextMenu assomiglio non funziona

public void onCreateContextMenu(ContextMenu menu , View v, 
        ContextMenuInfo menuInfo){

    super.onCreateContextMenu(menu, v, menuInfo);
    menu.add(0, DELETE_ID, 0, R.string.context_menu_favorite)
        .setIcon(android.R.drawable.btn_star);      
}

Answer 1

menu contestuali non supportano le icone.

  

Nota: le voci di menu di contesto non lo fanno   Icone di supporto o tasti di scelta rapida.

Answer 2

Questa libreria permette di avere un menu contestuale (implementato come AlertDialog) con icone utilizzando un menu standard XML.

https://code.google.com/p/android-icon -context menu /

Answer 3

L'ho fatto in questo modo:

Riferimento screenshot:

Menu:

menu_patient_language.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".activities.PatientSelectionActivity">

    <item
        android:id="@+id/menuEnglish"
        android:icon="@drawable/language_english"
        android:title="@string/english" />

    <item
        android:id="@+id/menuFrench"
        android:icon="@drawable/language_french"
        android:title="@string/french" />

</menu>

Stile:

style.xml:

  <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->

        <item name="android:popupMenuStyle">@style/popupMenuStyle</item>

    </style>

  <!--- Language selection popup -->

    <style name="popupMenuStyle" parent="Theme.AppCompat.Light.DarkActionBar">
        <item name="android:textColor">@color/colorPrimary</item>
        <item name="android:itemBackground">@android:color/white</item>
    </style>

codice Java:

 private void showPopup(View v) {

        Context wrapper = new ContextThemeWrapper(this, R.style.popupMenuStyle);
        PopupMenu mypopupmenu = new PopupMenu(wrapper, v);

        setForceShowIcon(mypopupmenu);
        MenuInflater inflater = mypopupmenu.getMenuInflater();
        inflater.inflate(R.menu.menu_patient_language, mypopupmenu.getMenu());
        mypopupmenu.show();
//        mypopupmenu.getMenu().getItem(0).setIcon(getResources().getDrawable(R.mipmap.ic_launcher));
        mypopupmenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                txtPreferredLanguage.setText(item.getTitle().toString());
                switch (item.getItemId()) {
                    case R.id.menuEnglish:
                        // Your code goes here
                        break;

                    case R.id.menuFrench:
                        // Your code goes here
                        break;
                }
                return false;
            }
        });
    }

    private void setForceShowIcon(PopupMenu popupMenu) {
        try {
            Field[] mFields = popupMenu.getClass().getDeclaredFields();
            for (Field field : mFields) {
                if ("mPopup".equals(field.getName())) {
                    field.setAccessible(true);
                    Object menuPopupHelper = field.get(popupMenu);
                    Class<?> popupHelper = Class.forName(menuPopupHelper.getClass().getName());
                    Method mMethods = popupHelper.getMethod("setForceShowIcon", boolean.class);
                    mMethods.invoke(menuPopupHelper, true);
                    break;
                }
            }
        } catch (Throwable e) {
            e.printStackTrace();
        }
    }

Spero che questo aiuterebbe certo.

Fine

Answer 4

Mentre l'API di Android non consente per le icone nei menu contestuali si possono vedere molti luoghi in cui Android li sta usando. premendo a lungo la schermata iniziale è un buon esempio.

ho preso il tempo di scavare attraverso la fonte di avvio e AnyCut e ha scoperto che Google sta utilizzando la propria classe personalizzata che estende un BaseAdapter insieme con il loro layout personalizzato.

Sono stato in grado di copiare la loro classe e il layout quasi esattamente e usarlo nella mia app per compiere. La classe se si desidera cercare si chiama AddAdapter.java.

Enjoy!

Answer 5

controllare questo ....

@Override
    public void onCreateContextMenu(ContextMenu menu, View v,
   ContextMenuInfo menuInfo) {
  super.onCreateContextMenu(menu, v, menuInfo);
  menu.setHeaderTitle("Settings");
  menu.setHeaderIcon(R.drawable.ic_settings);
  menu.add(0, v.getId(), 0, "Action 1");
  menu.add(0, v.getId(), 0, "Action 2");
  menu.add(0, v.getId(), 0, "Action 3");
 }

 @Override
 public boolean onContextItemSelected(MenuItem item) {
  if (item.getTitle() == "Action 1") {
   Toast.makeText(this, "Action 1 invoked", Toast.LENGTH_SHORT).show();
  } else if (item.getTitle() == "Action 2") {
   Toast.makeText(this, "Action 2 invoked", Toast.LENGTH_SHORT).show();
  } else if (item.getTitle() == "Action 3") {
   Toast.makeText(this, "Action 3 invoked", Toast.LENGTH_SHORT).show();
  } else {
   return false;
  }
  return true;
 }

Answer 6

Mentre l'API non supporta le icone in Context Menu, ma possiamo sempre fingere gonfiando una finestra di dialogo con il nostro punto di vista che si presenta come menu di contesto.

Copia-incollare i seguenti file esattamente farà il lavoro:

MainActivity.java

public class MainActivity extends Activity {

List<ContextMenuItem> contextMenuItems;
Dialog customDialog;

LayoutInflater inflater;
View child;
ListView listView;
ContextMenuAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    inflater = (LayoutInflater) this
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    child = inflater.inflate(R.layout.listview_context_menu, null);
    listView = (ListView) child.findViewById(R.id.listView_context_menu);

    contextMenuItems = new ArrayList<ContextMenuItem>();
    contextMenuItems.add(new ContextMenuItem(getResources().getDrawable(
            R.drawable.ic_launcher), "Facebook"));
    contextMenuItems.add(new ContextMenuItem(getResources().getDrawable(
            R.drawable.ic_launcher), "Scanner"));

    adapter = new ContextMenuAdapter(this,
            contextMenuItems);
    listView.setAdapter(adapter);

            listView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View v,
                int position, long id) {
            customDialog.dismiss();
            if (position == 0)
                Toast.makeText(MainActivity.this, "00", Toast.LENGTH_SHORT)
                        .show();

            if (position == 1)
                Toast.makeText(MainActivity.this, "11", Toast.LENGTH_SHORT)
                        .show();

        }
    });

    customDialog = new Dialog(this);
    customDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
    customDialog.setContentView(child);
    customDialog.show();
    }

}

ContextMenuItem.java

public class ContextMenuItem {

Drawable drawable;
String text;

public ContextMenuItem(Drawable drawable, String text) {
    super();
    this.drawable = drawable;
    this.text = text;
}

public Drawable getDrawable() {
    return drawable;
}

public void setDrawable(Drawable drawable) {
    this.drawable = drawable;
}

public String getText() {
    return text;
}

public void setText(String text) {
    this.text = text;
}

}

ContextMenuAdapter.java

public class ContextMenuAdapter extends BaseAdapter {
Context context;
List<ContextMenuItem> listContextMenuItems;
LayoutInflater inflater;

public ContextMenuAdapter(Context context,
        List<ContextMenuItem> listContextMenuItems) {
    super();
    this.context = context;
    this.listContextMenuItems = listContextMenuItems;
}

static class ViewHolder {
    protected ImageView imageView;
    protected TextView textView;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder viewHolder;
    if (convertView == null) {
        inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        viewHolder = new ViewHolder();
        convertView = inflater.inflate(R.layout.context_menu_item, parent,
                false);
        viewHolder.imageView = (ImageView) convertView
                .findViewById(R.id.imageView_menu);
        viewHolder.textView = (TextView) convertView
                .findViewById(R.id.textView_menu);
        convertView.setTag(viewHolder);
    } else {
        viewHolder = (ViewHolder) convertView.getTag();
    }

    viewHolder.imageView.setImageDrawable(listContextMenuItems
            .get(position).getDrawable());
    viewHolder.textView.setText(listContextMenuItems.get(position)
            .getText());
    return convertView;

}

@Override
public int getCount() {
    return listContextMenuItems.size();
}

@Override
public Object getItem(int position) {
    return null;
}

@Override
public long getItemId(int position) {
    return 0;
}

}

context_menu_item.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="10dp"
android:paddingLeft="10dp"
android:paddingTop="10dp" >

<ImageView
    android:id="@+id/imageView_menu"
    android:layout_width="70dp"
    android:layout_height="70dp"
    android:scaleType="fitXY" />

<TextView
    android:id="@+id/textView_menu"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:layout_marginLeft="10dp"
    android:layout_toRightOf="@+id/imageView_menu" />

</RelativeLayout>

listview_context_menu.xml

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