我有一个弹出窗口。我想将LinearLayout
弹出窗口的背景动态更改android:background="@drawable/popup_bg"
为android:background="@drawable/popup_bg2"
这是我的代码:
private void showPopup(final Activity context, int x, int y, String id, String n, String a, String l) {
int popupWidth = 200;
int popupHeight = 150;
// Inflate the popup_layout.xml
LinearLayout viewGroup = (LinearLayout) context.findViewById(R.id.popup);
LayoutInflater layoutInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = layoutInflater.inflate(R.layout.popup_layout, viewGroup);
TextView id1 = (TextView) layout.findViewById(R.id.id);
TextView name = (TextView) layout.findViewById(R.id.name);
TextView absent = (TextView) layout.findViewById(R.id.absence);
TextView late = (TextView) layout.findViewById(R.id.lateness);
id1.setText(id);
name.setText(n);
absent.setText(a);
late.setText(l);
// Creating the PopupWindow
final PopupWindow popup = new PopupWindow(context);
popup.setContentView(layout);
popup.setWidth(popupWidth);
popup.setHeight(popupHeight);
popup.setFocusable(true);
// Some offset to align the popup a bit to the right, and a bit down, relative to button's position.
int OFFSET_X = 30;
int OFFSET_Y = 300;
// Clear the default translucent background
popup.setBackgroundDrawable(new BitmapDrawable());
// Displaying the popup at the specified location, + offsets.
popup.showAtLocation(layout, Gravity.NO_GRAVITY, x + OFFSET_X, y +OFFSET_Y);
// Getting a reference to Close button, and close the popup when clicked.
Button close = (Button) layout.findViewById(R.id.close);
close.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
popup.dismiss();
}
});
}
popup_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:id="@+id/popup"
android:layout_height="wrap_content"
android:background="@drawable/popup_bg"
android:orientation="vertical" >
</LinearLayout>