[英]How to realize this custom popup menu with Material Design Android?
您可以使用ListPopupWindow ,提交自定义适配器,通过它可以控制ListPopupWindow
的每一行的ListPopupWindow
。 至于普通的PopupWindow
你必须提供一个锚视图,另外你必须在ListPopupWindow
的实例上调用setContentWidth
,它将弹出窗口的宽度设置为其内容的大小。 这是一个你必须付出的小代价,但对于一个小数据集来说并不是什么大问题。 我有这个实用工具方法来检索行的最大宽度:
public int measureContentWidth(ListAdapter adapter) {
int maxWidth = 0;
int count = adapter.getCount();
final int widthMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
final int heightMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
View itemView = null;
for (int i = 0; i < count; i++) {
itemView = adapter.getView(i, itemView, this);
itemView.measure(widthMeasureSpec, heightMeasureSpec);
maxWidth = Math.max(maxWidth, itemView.getMeasuredWidth());
}
return maxWidth;
}
有一个名为PopupMenu
的小部件,它基本上是一个锚定到特定视图的菜单。 一个缺点是它默认不显示图标。
但是,您可以使用反射并调用setForceShowIcon
来显示它们。 您需要的代码是:
由于PopupMenu
锚定到特定视图,因此ActionBar
项具有actionLayout
属性。 该布局( action_item.xml
)可以简单如下:
<Button xmlns:android="http://schemas.android.com/apk/res/android" style="?attr/actionButtonStyle" android:layout_gravity="center" android:text="Show popup" android:textStyle="bold" android:textSize="12sp" android:layout_width="wrap_content" android:layout_height="match_parent"/>
ActionBar
菜单样式,包含具有上述布局的项目
<menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/popup_item" android:title="Show popup" android:showAsAction="always" android:actionLayout="@layout/action_item"/> </menu>
你的popup_menu.xml
,你将为你的PopupMenu
充气的布局
<menu xmlns:android="http://schemas.android.com/apk/res/android"> <item android:id="@+id/item1" android:title="Item1" android:icon="@mipmap/ic_launcher"/> </menu>
最后,在单击ActionBar
项目时执行通胀的代码
@Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.action_add_item: PopupMenu popup = new PopupMenu(this, item.getActionView()); MenuInflater inflater = popup.getMenuInflater(); inflater.inflate(R.menu.popup_menu, popup.getMenu()); // Use reflection to invoke setForceShowIcon try { Field[] fields = popup.getClass().getDeclaredFields(); for (Field field : fields) { if ("mPopup".equals(field.getName())) { field.setAccessible(true); Object menuPopupHelper = field.get(popup); Class<?> classPopupHelper = Class .forName(menuPopupHelper.getClass().getName()); Method setForceIcons = classPopupHelper .getMethod("setForceShowIcon", boolean.class); setForceIcons.invoke(menuPopupHelper, true); break; } } } catch (Exception e) { e.printStackTrace(); } popup.show(); return true; } return super.onOptionsItemSelected(item); }
请注意,要在菜单中获取多行文本,您还需要对弹出菜单项使用actionLayout
。
使用弹出列表片段 。 关于片段的好处是你可以轻松地为它们制作动画 (如果你不理解片段,我建议先阅读Fragment Introduction )
如果要完全控制弹出内容,请参阅Dialog Fragment
我有同样的问题。但最后我在自己的解决方案中发现我正在分享我的代码。 希望能帮到你。
popupWindowDogs = popupWindowDogs(); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub // popupWindowDogs.showAsDropDown(v, -5, 0); popupWindowDogs().showAtLocation(v, Gravity.CENTER, 0, 0); } }); // Detect touched area detector = new SimpleGestureFilter(this, this);
}
public PopupWindow popupWindowDogs() { // initialize a pop up window type PopupWindow popupWindow = new PopupWindow(this); // the drop down list is a list view final ListView listView = new ListView(this); // set our adapter and pass our pop up window contents listView.setAdapter(dogsAdapter(popUpContents)); // listView.setBackgroundColor(Color.DKGRAY); listView.setBackgroundResource(R.drawable.ss4); listView.setPadding(0, 0, 0, 10); listView.setDivider(null); try { listView.setOnScrollListener(new OnScrollListener() { @Override public void onScrollStateChanged(AbsListView view, int scrollState) { View c = listView.getChildAt(0); String cc = listView.getChildAt(0).toString(); int scrolly = -c.getTop() + listView.getFirstVisiblePosition() * c.getHeight(); /* * Toast.makeText(getApplicationContext(), scrolly + "", Toast.LENGTH_SHORT) * .show(); */} @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { } }); } catch (Exception e) { Toast.makeText(getApplicationContext(), e.toString() + "", Toast.LENGTH_SHORT) .show(); } listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View v, int arg2, long arg3) { try { // TODO Auto-generated method stub Context mContext = v.getContext(); Swipetouch mainActivity = ((Swipetouch) mContext); // add some animation when a list item was clicked Animation fadeInAnimation = AnimationUtils.loadAnimation(v.getContext(), android.R.anim.fade_in); fadeInAnimation.setDuration(10); v.startAnimation(fadeInAnimation); // dismiss the pop up mainActivity.popupWindowDogs.dismiss(); // get the text and set it as the button text String val = (String) arg0.getItemAtPosition(arg2); // Toast.makeText(mContext, val, Toast.LENGTH_SHORT).show(); if (val.equals("Signup Now")) { Intent ii = new Intent(getApplicationContext(), Registration.class); startActivity(ii); stopService(new Intent(Swipetouch.this, MyService.class)); stopService(new Intent(Swipetouch.this, MyService.class)); } else if (val.equals("Login")) { Intent ii = new Intent(getApplicationContext(), MyLoginActivity.class); startActivity(ii); stopService(new Intent(Swipetouch.this, MyService.class)); } else if (val.equals("Exit")) { finish(); stopService(new Intent(Swipetouch.this, MyService.class)); } else if (val.equals("Friends")) { Intent ii = new Intent(getApplicationContext(), MyLoginActivity.class); startActivity(ii); } else if (val.equals("Exit")) { stopService(new Intent(Swipetouch.this, MyService.class)); finish(); } } catch (Exception e) { Toast.makeText(Swipetouch.this, e.toString(), Toast.LENGTH_SHORT).show(); } } }); // some other visual settings popupWindow.setFocusable(true); popupWindow.setWidth(250); // popupWindow.setHeight(300); popupWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT); // set the list view as pop up window content // SET WALLPAPER IMAGE /* * popupWindow.setBackgroundDrawable(getWallpaper()); popupWindow.setHeight(300); */ // layout.setBackgroundResource(R.drawable.sshadow); // layout.setBackgroundColor(Color.TRANSPARENT); // popupWindow.setContentView(layout); popupWindow.setBackgroundDrawable(new ColorDrawable( android.graphics.Color.TRANSPARENT)); popupWindow.setContentView(listView); return popupWindow; }
此代码在我的应用程序中工作。
尝试这个 :-
<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=".LocationDetailsActivity">
<item xmlns:tools="http://schemas.android.com/tools"
android:icon="@android:drawable/ic_menu_mapmode"
app:showAsAction="ifRoom"
android:title="@string/title_of_menu"
tools:context=".LocationDetailsActivity">
//the menu list with icon
<menu>
<item
android:id="@+id/action_map_type_normal"
android:orderInCategory="100"
android:icon="some_icon" //place your icon here
android:title="Vacation spots" />
<item
android:id="@+id/action_map_type_satellite"
android:orderInCategory="100"
android:icon="some_icon" //place your icon here
android:title="Friends and family" />
<item
android:id="@+id/action_map_type_hybrid"
android:orderInCategory="100"
android:icon="some_icon" //place your icon here
android:title="Restaurants" />
</menu>
</item>
您可以从这些不同的提供程序中查看教程
http://developer.android.com/guide/topics/ui/actionbar.html
http://www.vogella.com/tutorials/AndroidActionBar/article.html
http://www.androidhive.info/2013/11/android-working-with-action-bar/
所有这些都有很好的示例和源代码来帮助您
希望这对你有所帮助:)
try {
java.lang.reflect.Field[] fields = popup.getClass().getDeclaredFields();
for (java.lang.reflect.Field field : fields) {
if ("mPopup".equals(field.getName())) {
field.setAccessible(true);
Object menuPopupHelper = field.get(popup);
Class<?> classPopupHelper = Class
.forName(menuPopupHelper.getClass().getName());
Method setForceIcons = classPopupHelper
.getMethod("setForceShowIcon", boolean.class);
setForceIcons.invoke(menuPopupHelper, true);
break;
}
}
} catch (Exception e) {
e.printStackTrace();
}
更简单的解决方案 在.show()方法之前添加它。
try {
Field mFieldPopup=popupMenu.getClass().getDeclaredField("mPopup");
mFieldPopup.setAccessible(true);
MenuPopupHelper mPopup = (MenuPopupHelper) mFieldPopup.get(popupMenu);
mPopup.setForceShowIcon(true);
} catch (Exception e) {}
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