android 之popupWindow 在指定位置上的显示
2015-08-19 17:15
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http://blog.csdn.net/dxj007/article/details/8026691
这篇文章主要介绍了popupWindow 在控件的各个方向上的显示(上、下、左、右),主要用到popupWindow 的showAtLocation()方法:
在控件的上方:
[java] view
plaincopy
private void showPopUp(View v) {
LinearLayout layout = new LinearLayout(this);
layout.setBackgroundColor(Color.GRAY);
TextView tv = new TextView(this);
tv.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
tv.setText("I'm a pop -----------------------------!");
tv.setTextColor(Color.WHITE);
layout.addView(tv);
popupWindow = new PopupWindow(layout,120,120);
popupWindow.setFocusable(true);
popupWindow.setOutsideTouchable(true);
popupWindow.setBackgroundDrawable(new BitmapDrawable());
int[] location = new int[2];
v.getLocationOnScreen(location);
popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, location[0], location[1]-popupWindow.getHeight());
}
在控件的其他方向上显示只需修改最后一行代码即可,如:
下方:popupWindow.showAsDropDown(v);
左边:
[java] view
plaincopy
popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, location[0]-popupWindow.getWidth(), location[1]);
右边:
[html] view
plaincopy
popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, location[0]+v.getWidth(), location[1]);
----------------------这篇文章有个bug,如果是在绘制之前是拿不到popup的宽高的,可以
这样解决
这篇文章主要介绍了popupWindow 在控件的各个方向上的显示(上、下、左、右),主要用到popupWindow 的showAtLocation()方法:
在控件的上方:
[java] view
plaincopy
private void showPopUp(View v) {
LinearLayout layout = new LinearLayout(this);
layout.setBackgroundColor(Color.GRAY);
TextView tv = new TextView(this);
tv.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
tv.setText("I'm a pop -----------------------------!");
tv.setTextColor(Color.WHITE);
layout.addView(tv);
popupWindow = new PopupWindow(layout,120,120);
popupWindow.setFocusable(true);
popupWindow.setOutsideTouchable(true);
popupWindow.setBackgroundDrawable(new BitmapDrawable());
int[] location = new int[2];
v.getLocationOnScreen(location);
popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, location[0], location[1]-popupWindow.getHeight());
}
在控件的其他方向上显示只需修改最后一行代码即可,如:
下方:popupWindow.showAsDropDown(v);
左边:
[java] view
plaincopy
popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, location[0]-popupWindow.getWidth(), location[1]);
右边:
[html] view
plaincopy
popupWindow.showAtLocation(v, Gravity.NO_GRAVITY, location[0]+v.getWidth(), location[1]);
----------------------这篇文章有个bug,如果是在绘制之前是拿不到popup的宽高的,可以
*/ mPopupWindow.getContentView().measure(0, 0); mPopupWindowHeight = mPopupWindow.getContentView().getMeasuredHeight(); mPopupWindowWidth = mPopupWindow.getContentView().getMeasuredWidth();
这样解决
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