本笔记记录一周内的小知识点和一些心学习的Demo。
1.PopupWindow：
new 一个activity_pop_window：id为popwindow的Button，id为hello123的TextView
自测2.3以下不能实现：
1 protected void onCreate(Bundle savedInstanceState) { 2 super.onCreate(savedInstanceState); 3 setContentView(R.layout.activity_pop_window); 4 Button btn = (Button) findViewById(R.id.popwindow); 5 final View view = LayoutInflater.from(getApplicationContext()).inflate( 6 R.layout.popwindoview, null); 7 final PopupWindow pop = new PopupWindow(200, 200); 8 view.findViewById(R.id.hello123).setOnClickListener( 9 new OnClickListener() { 10 11 @Override 12 public void onClick(View v) { 13 pop.dismiss(); 14 } 15 }); 16 pop.setContentView(view); 17 btn.setOnClickListener(new OnClickListener() { 18 19 @Override 20 public void onClick(View v) { 21 // pop.showAsDropDown(v); 22 int[] pos = new int[2]; 23 v.getLocationOnScreen(pos); 24 pop.showAtLocation(v, Gravity.NO_GRAVITY, pos[0], pos[1]); 25 } 26 }); 27 }
2.PopupWindow的消失
方法1：通过点击事件OnclickListrener
方法2：设置popupWindow参数：
pop.setOutsideTouchable(true);
pop.setFocusable(true);