popupwindow中显示gridview

public class PopuWindowActivty extends Activity {    private Button btnClick;    private PopupWindow popuWindow1;    private View contentView1;    private Button btn1;    private GridView gvGrid;    private int[] image = { R.mipmap.what, R.mipmap.what, R.mipmap.what,R.mipmap.what};    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.popu_item);        btnClick = (Button) findViewById(R.id.btn_click);        btnClick.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                initPopuWindow1(v);            }        });    }    private void initPopuWindow1(View parent) {        if (popuWindow1 == null) {            LayoutInflater mLayoutInflater = LayoutInflater.from(this);            contentView1 = mLayoutInflater.inflate(R.layout.activity_main, null);            gvGrid = (GridView) contentView1.findViewById(R.id.gv_gride);            ArrayList<HashMap<String, Object>> imagelist = new ArrayList<HashMap<String, Object>>();            for (int i = 0; i < 4; i++) {                HashMap<String,Object> map=new HashMap<>();                map.put("image",image[i]);                imagelist.add(map);            }            gvGrid.setAdapter(new SimpleAdapter(PopuWindowActivty .this,imagelist,R.layout.grid_item,new String[]{"image"},new int[] {R.id.image }));            gvGrid.setOnItemClickListener(new AdapterView.OnItemClickListener() {            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,                                    long arg3) {                Toast.makeText(popu.this,"I am toast",Toast.LENGTH_SHORT).show();                //点击任意gridview item，让popupwindow dismiss掉                for (int i = 0; i < 4; i++) {                    if (arg2==i){                        popuWindow1.dismiss();                    }                }            }        });            popuWindow1 = new PopupWindow(contentView1, ViewGroup.LayoutParams.WRAP_CONTENT,                    ViewGroup.LayoutParams.WRAP_CONTENT);        }        ColorDrawable cd = new ColorDrawable(0x000000);        popuWindow1.setBackgroundDrawable(cd);        //产生背景变暗效果        WindowManager.LayoutParams lp=getWindow().getAttributes();        lp.alpha = 0.4f;        getWindow().setAttributes(lp);        popuWindow1.setOutsideTouchable(true);        popuWindow1.setFocusable(true);        popuWindow1.showAtLocation((View)parent.getParent(), Gravity.CENTER|Gravity.CENTER_HORIZONTAL, 0, 0);        popuWindow1.update();        popuWindow1.setOnDismissListener(new PopupWindow.OnDismissListener(){            //在dismiss中恢复透明度            public void onDismiss(){                WindowManager.LayoutParams lp=getWindow().getAttributes();                lp.alpha = 1f;                getWindow().setAttributes(lp);            }        });    }}

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