当你点击文本视图时,我制作了一个弹出窗口,我按照指南创建弹出窗口,它能正常工作,只是弹出窗口的位置不是我想要的,似乎弹出窗口会将其左上角显示在指定位置,但我希望底部左侧角落在指定点,就像这样,在搜索后,我发现重力负责此操作,请参见 developer.android ,但是当我将重力更改为
弹出窗口XML
这里是我拥有的代码。
这些是方法。
Gravity.BOTTOM|Gravity.LEFT
时,弹出窗口显示在文本上方。弹出窗口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:orientation="vertical"
android:gravity="center"
android:padding="7dp"
android:background="#d1a2a2">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Medium Text"
android:id="@+id/textView37"
android:gravity="center"
android:textAlignment="gravity"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Medium Text"
android:id="@+id/textView41" />
</LinearLayout>
这里是我拥有的代码。
vfy.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
//Open popup window
if (p != null)
showPopup(MainActivity.this, p);
}
});
这些是方法。
@Override
public void onWindowFocusChanged(boolean hasFocus) {
int[] location = new int[2];
TextView button = (TextView) findViewById(R.id.textView2);
// Get the x, y location and store it in the location[] array
// location[0] = x, location[1] = y.
button.getLocationOnScreen(location);
//Initialize the Point with x, and y positions
p = new Point();
p.x = location[0];
p.y = location[1];
}
//............
private void showPopup(final Activity context, Point p) {
// 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, viewGroup);
// Creating the PopupWindow
final PopupWindow popup = new PopupWindow(context);
popup.setContentView(layout);
popup.setWindowLayoutMode(ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
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 = 30;
// Clear the default translucent background
popup.setBackgroundDrawable(new BitmapDrawable());
// Displaying the popup at the specified location, + offsets.
popup.showAtLocation(layout, Gravity.NO_GRAVITY, p.x + OFFSET_X, p.y + OFFSET_Y);
// Getting a reference to Close button, and close the popup when clicked.
TextView close = (TextView) layout.findViewById(R.id.textView37);
close.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
popup.dismiss();
}
});
}