关于PopupWindow代码片段

最新推荐文章于 2025-05-25 10:26:35 发布

原创最新推荐文章于 2025-05-25 10:26:35 发布 · 546 阅读

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本文介绍如何使用Android中的PopupWindow来实现一个可定制的下拉菜单，包括初始化视图、设置适配器及响应点击事件等关键步骤，并详细解释了如何调整弹窗的位置和尺寸。

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private PopupWindow window;

private RelativeLayout rl_complete;

private void showPopowindowDialog() {

View popwindow = inflater.inflate(R.layout.dialog_sort, null);
ListView lv = (ListView) popwindow.findViewById(R.id.main_dialog_lv);
PopupWindowAdapter popupWindowAdapter = null;
if(popupWindowAdapter == null){
popupWindowAdapter = new PopupWindowAdapter();
}
lv.setAdapter(popupWindowAdapter);
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
key = datas[arg2];
currentSortIndex = arg2;
window.dismiss();
sendRankInfoReq();
}
});

DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
int width = displayMetrics.widthPixels;

window = new PopupWindow(popwindow, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
window.setBackgroundDrawable(getResources().getDrawable(R.drawable.title_function_bg)); //这句话必须有
window.setAnimationStyle(android.R.style.Animation_Dialog);
window.update();
window.setFocusable(true);
window.setTouchable(true); //设置PopupWindow可触摸
window.setOutsideTouchable(true); //设置非PopupWindow区域可触摸
int[] xy = new int[2];
rl_complete.getLocationOnScreen(xy);
window.showAtLocation(rl_complete, Gravity.RIGHT | Gravity.TOP,
rl_complete.getWidth()/5,xy[1]+rl_complete.getWidth());

}

@Override
public boolean onTouchEvent(MotionEvent event) {
if (window != null && window.isShowing()) {

window.dismiss();

window = null;

}
return super.onTouchEvent(event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (window != null && window.isShowing()) {

window.dismiss();

window = null;

} else {
finish();
}
}

return false;
}