I looked online and was not able to find a working example of the PopupWindow class. The code examples I found online either compile but do not work, or are using methods which have since been removed (such as Activity.getView开发者_开发百科Inflate())
.
Is there a simple working example that displays a PopupWindow?
I created a working example based on this Google Groups post.
To create a simple working PopupWindow, you'll need to do the following:
- Create a layout XML which describes the View that will be rendered within the PopupWindow.
- Invoke the PopupWindow by inflating the layout XML, and assign the appropriate "parent view" to the pop-up.
popup_example.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:padding="10dip"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dip"
android:text="Test Pop-Up"
/>
</LinearLayout>
Java code:
LayoutInflater inflater = (LayoutInflater)
this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
PopupWindow pw = new PopupWindow(
inflater.inflate(R.layout.popup_example, null, false),
100,
100,
true);
// The code below assumes that the root container has an id called 'main'
pw.showAtLocation(this.findViewById(R.id.main), Gravity.CENTER, 0, 0);
AFAIK only the AbsoluteLayout works(pls confirm), as seen on http://sree.cc/google/android/android-popup-window . I've shown the popup right, but LinearLayout was not showing all elements. But AbsoluteLayout is deprecated!
FrameLayout also works, but organizing views is a nightmare since the official documentation says it is only good for holding one view.
Also, to be able to receive touch events, you need to do this: setBackgroundDrawable(new BitmapDrawable());
as further explained at Android popup window dismissal
You are getting the invisibility because you didn't set the Background color of the layout to whom you are inflated.set it as android:background="#778899",and definitely you can see the things
精彩评论