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Android UI自定义Spinner下拉框(用popuwindow实现)-转

时间:2015-03-21 16:51:08      阅读:224      评论:0      收藏:0      [点我收藏+]

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定义出第一个图片的布局和弹出框(一个listView)的布局,,这里就不在多说了~ListView需要自己定义一个MyspinnerAdapter~做好这些准备之后,就是弹出框的实现了~

 protected void onCreate(Bundle savedInstanceState) {
03         super.onCreate(savedInstanceState);
04         setContentView(R.layout.activity_main);
05         textView = (TextView) findViewById(R.id.text);
06         imgView = findViewById(R.id.arrowbut);
07         // 实例化一个List,添加数据
08         list = new ArrayList<String>();
09         list.add("第一展厅");
10         list.add("第二展厅");
11         list.add("第三展厅");
12         // 实例化一个适配器,list的数据作为Adapter的数据
13         adapter = new MyspinnerAdapter(this, list);
14         // 默认设置下拉框的标题为数据的第一个
15         textView.setText((CharSequence) adapter.getItem(0));
16         spinnerlayout = (LinearLayout) findViewById(R.id.spinnerid);
17         // 点击右侧按钮,弹出下拉框
18         imgView.setOnClickListener(new OnClickListener() {
19  
20             @Override
21             public void onClick(View v) {
22  
23                 showWindow(v);
24  
25             }
26         });
27     }
28  
29     @SuppressWarnings("deprecation")
30     public void showWindow(View v) {
31         // 找到布局文件
32         layout = (LinearLayout) LayoutInflater.from(this).inflate(R.layout.mypinner_dropdown, null);
33         // 实例化listView
34         listView = (ListView) layout.findViewById(R.id.listView);
35         // 设置listView的适配器
36         listView.setAdapter(adapter);
37         // 实例化一个PopuWindow对象
38         popupWindow = new PopupWindow(v);
39         // 设置弹框的宽度为布局文件的宽
40         popupWindow.setWidth(spinnerlayout.getWidth());
41         // 高度随着内容变化
42         popupWindow.setHeight(LayoutParams.WRAP_CONTENT);
43         // 设置一个透明的背景,不然无法实现点击弹框外,弹框消失
44         popupWindow.setBackgroundDrawable(new BitmapDrawable());
45         // 设置点击弹框外部,弹框消失
46         popupWindow.setOutsideTouchable(true);
47         // 设置焦点
48         popupWindow.setFocusable(true);
49         // 设置所在布局
50         popupWindow.setContentView(layout);
51         // 设置弹框出现的位置,在v的正下方横轴偏移textview的宽度,为了对齐~纵轴不偏移
52         popupWindow.showAsDropDown(v, -textView.getWidth(), 0);
53         // listView的item点击事件
54         listView.setOnItemClickListener(new OnItemClickListener() {
55  
56             @Override
57             public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
58                 // TODO Auto-generated method stub
59                 textView.setText(list.get(arg2));// 设置所选的item作为下拉框的标题
60                 // 弹框消失
61                 popupWindow.dismiss();
62                 popupWindow = null;
63             }
64         });

 

spinner用法:

this.bank_name = (Spinner) super.findViewById(R.id.spinnerCityStatic);

this.bank_name.setOnItemSelectedListener(new OnItemSelectedListenerImpl());

 

// 下拉框选择事件
private class OnItemSelectedListenerImpl implements OnItemSelectedListener {
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
String city = parent.getItemAtPosition(position).toString();
Toast.makeText(BangBankActivity.this, "选择的城市是:" + city,
Toast.LENGTH_LONG).show();
}

@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub
}

}

Android UI自定义Spinner下拉框(用popuwindow实现)-转

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原文地址:http://www.cnblogs.com/manmanlu/p/4355705.html

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