In Kontextmenü-Symbol in Android

Question

Ich habe eine Listview mit einem ContextMenu, aber wenn ich für ContextMenu SetIcon aussehen, wie es funktioniert nicht

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

Kontextmenüs unterstützen keine Symbole.

  

Hinweis: Kontextmenüpunkte nicht   Unterstützung Symbole oder Shortcut-Tasten.

Answer 2

Diese Bibliothek ermöglicht es Ihnen, ein Kontextmenü zu haben (wie AlertDialog implementiert) mit Symbolen eines Standard-XML-Menü.

https://code.google.com/p/android-icon -Kontext-Menü /

Answer 3

Ich habe es auf diese Weise:

Referenz Screenshot:

Menü:

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>

Style:

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>

Java-Code:

 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();
        }
    }

Hope dies würde Ihnen sicher helfen.

Fertig

Answer 4

Während die Android API nicht für Icons in Kontextmenü ermöglicht es Ihnen, viele Orte sehen, wo Android wird mit ihnen. Langer Startbildschirm drücken ist ein gutes Beispiel dafür.

nahm ich die Zeit durch den Launcher und AnyCut Quelle zu graben und fand, dass Google ihre eigene Klasse verwendet, die zusammen mit ihrem eigenen benutzerdefinierten Layout einem BaseAdapter erstreckt.

Ich war in der Lage, ihre Klasse und das Layout fast genau zu kopieren und es in meinem eigenen App verwenden zu erreichen. Die Klasse, wenn Sie danach suchen wollen heißt AddAdapter.java.

Genießen Sie!

Answer 5

überprüfen Sie dieses ....

@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

Während die API unterstützen keine Symbole im Kontext-Menü, aber wir können es immer Fälschung durch einen Dialog mit unserer eigenen Ansicht aufblasen, die wie Kontextmenü aussieht.

Kopieren-Einfügen der folgenden Dateien genau die Arbeit machen:

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" />