在android中添加上下文菜单图标
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Add Context Menu Icon in android
提问by Dennie
I have a Listview with a ContextMenu, but when I setIcon for ContextMenu look like it doesn't work
我有一个带有 ContextMenu 的 Listview，但是当我为 ContextMenu 设置图标时，它看起来不起作用
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);
}
回答by CommonsWare
Context menusdo not support icons.
上下文菜单不支持图标。
Note: Context menu items do not support icons or shortcut keys.
注意：上下文菜单项不支持图标或快捷键。
回答by Hiren Patel
I did it by this way:
我是这样做的：
Reference screenshot:
参考截图：
Menu:
菜单：
menu_patient_language.xml
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:
风格：
style.xml:
样式.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:
爪哇代码：
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 this would help you sure.
希望这会帮助你确定。
Done
完毕
回答by Randy Sugianto 'Yuku'
This library allows you to have a context menu (implemented as AlertDialog) with icons using a standard XML menu.
该库允许您AlertDialog使用标准 XML 菜单使用带有图标的上下文菜单（实现为）。
回答by Cameron McBride
While the Android API does not allow for Icons in Context menus you can see many places where Android is using them. Long pressing your home screen is one good example.
虽然 Android API 不允许在上下文菜单中使用图标，但您可以看到许多 Android 正在使用它们的地方。长按主屏幕就是一个很好的例子。
I took the time to dig through the Launcher and AnyCut source and found that Google is using their own custom class that extends a BaseAdapter along with their own custom layout.
我花时间仔细研究了 Launcher 和 AnyCut 源代码，发现 Google 正在使用他们自己的自定义类，该类扩展了 BaseAdapter 以及他们自己的自定义布局。
I was able to copy their class and layout almost exactly and use it in my own app to accomplish. The class if you want to search for it is called AddAdapter.java.
我几乎可以完全复制他们的类和布局，并在我自己的应用程序中使用它来完成。如果要搜索它，该类称为 AddAdapter.java。
Enjoy!
享受！
回答by Pranav Mahajan
While the API doesn't support icons in Context Menu, but we can always fake it by inflating a Dialog with our own view that looks like context menu.
虽然 API 不支持上下文菜单中的图标，但我们总是可以通过使用我们自己的看起来像上下文菜单的视图来填充 Dialog 来伪造它。
Copy-pasting the following files exactly will do the job:
完全复制粘贴以下文件将完成这项工作：
MainActivity.java
主活动.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
上下文菜单项.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
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
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
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" />
