android 小功能 超简单 仿pickerView 图片滚筒选择列表

近期项目需求 一个滚筒图片选择列表 想来想去没有合适的 ios有一个pickerView 是可以的 而我大安卓我没有想起来有这样效果图 ( 可能是我没想起来) 时间比较赶 简易性 超简单的图片滚筒选择列表
思路 ： 其实很简单 popupwindow+listview 你可以给list view固定高度 listview的item 也固定 popupwindow视图内显示你想要的个数 可以上下滑动 再给listview的item一个点击变色 就可以了 下面上代码

popwindow的布局代码

给个效果图吧

listview 条目是40x40的图片 让它居中就行了

java 代码

public class MainActivity extends AppCompatActivity {

private Button mainbt;private PopupWindow popupWindow;private WindowManager.LayoutParams params;private ImageView mainimg;private int p = 1001;private ImageView img1;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    mainbt = (Button) findViewById(R.id.main_bt);    mainimg = (ImageView) findViewById(R.id.main_img);    img1 = (ImageView) findViewById(R.id.main_img1);    RotateAnimation animation = new RotateAnimation(0,-15,50,50);    animation.setRepeatCount(1);    animation.setFillAfter(true);    animation.setDuration(1);    img1.startAnimation(animation);    mainbt.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {           showPopupWindow(v);        }    });}private void showPopupWindow(View v) {    View view = getLayoutInflater().inflate(R.layout.popup_window, null);    popupWindow = new PopupWindow(view, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT,true);    //点击外部区域popwindow消失    popupWindow.setBackgroundDrawable(new BitmapDrawable());    popupWindow.setFocusable(true);    //显示(靠中间)    popupWindow.showAtLocation(findViewById(R.id.main_view), Gravity.BOTTOM, 0, 0);    TextView popsure = (TextView) view.findViewById(R.id.pop_sure);    TextView popcancel = (TextView) view.findViewById(R.id.pop_cancel);    List<Integer> list = new ArrayList<>();    for (int i = 0; i < 6; i++) {        list.add(i);    }    ListView lv_list = (ListView) view.findViewById(R.id.grade_list);    final PopAdapter popAdapter = new PopAdapter(MainActivity.this, (ArrayList<Integer>) list);    lv_list.setAdapter(popAdapter);    lv_list.setOnItemClickListener(new AdapterView.OnItemClickListener() {        @Override        public void onItemClick(AdapterView<?> parent, View view,                                int position, long id) {            p = position;            Toast.makeText(MainActivity.this, "点击了条目--"+position, Toast.LENGTH_SHORT).show();           // popupWindow.dismiss();        }    });    lv_list.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {        @Override        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {            Toast.makeText(MainActivity.this, "选中了---"+position, Toast.LENGTH_SHORT).show();        }        @Override        public void onNothingSelected(AdapterView<?> parent) {            Toast.makeText(MainActivity.this, "没选中", Toast.LENGTH_SHORT).show();        }    });    popsure.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {            Toast.makeText(MainActivity.this, "确定--"+p, Toast.LENGTH_SHORT).show();           switch (p){               case 1001:                   break;               case 0:                   mainimg.setImageResource(R.drawable.gouone);                   break;               case 1:                   mainimg.setImageResource(R.drawable.goutwo);                   break;               case 2:                   mainimg.setImageResource(R.drawable.gouthree);                   break;               case 3:                   mainimg.setImageResource(R.drawable.goufour);                   break;               case 4:                   mainimg.setImageResource(R.drawable.goufive);                   break;               case 5:                   mainimg.setImageResource(R.drawable.gousix);                   break;           }            popupWindow.dismiss();        }    });    popcancel.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View v) {            popupWindow.dismiss();        }    });}// listview 适配器class PopAdapter extends BaseAdapter{    Context context;    ArrayList<Integer> list;    public PopAdapter(Context context, ArrayList<Integer> list) {        this.context=context;        this.list=list;    }    @Override    public int getCount() {        return list.size();    }    @Override    public Object getItem(int position) {        return list.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        View view;        ViewHolder holder;        if (convertView==null){            view = View.inflate(context,R.layout.item_pop,null);            holder = new ViewHolder();            holder.popimg = (ImageView) view.findViewById(R.id.pop_img);            view.setTag(holder);        }else {            view= convertView;            holder = (ViewHolder) view.getTag();        }        switch (list.get(position)){            case 0:                holder.popimg.setImageResource(R.drawable.gouone);                break;            case 1:                holder.popimg.setImageResource(R.drawable.goutwo);                break;            case 2:                holder.popimg.setImageResource(R.drawable.gouthree);                break;            case 3:                holder.popimg.setImageResource(R.drawable.goufour);                break;            case 4:                holder.popimg.setImageResource(R.drawable.goufive);                break;            case 5:                holder.popimg.setImageResource(R.drawable.gousix);                break;        }        return view;    }    class ViewHolder{        ImageView popimg;    }}

}
效果图

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