View qrcode_view = this.getLayoutInflater().inflate(R.layout.taskdetail_qrcode,null); final PopupWindow qrcodePop = new PopupWindow(qrcode_view,getWindowManager().getDefaultDisplay().getWidth(),getWindowManager().getDefaultDisplay().getHeight()); //qrcodePop.showAsDropDown(v); qrcodePop.showAtLocation(v,Gravity.CENTER,Gravity.FILL_HORIZONTAL,Gravity.FILL_VERTICAL); ImageView qrcode = (ImageView)qrcode_view.findViewById(R.id.qrcode_image); int qr_width = BitmapUtil.Dp2Px(this,200); qrcode.setImageBitmap(QRCodeUtil.createImage(globalVal.BASE_URL+"/"+taskInfo.task_id,qr_width,qr_width)); qrcode_view.findViewById(R.id.close_qrcode).setOnClickListener( new View.OnClickListener() { @Override public void onClick(View v) { qrcodePop.dismiss(); } } );
注意获取屏幕的高度和宽度:
宽度:getWindowManager().getDefaultDisplay().getWidth();
高度:getWindowManager().getDefaultDisplay().getHeight();