Android 设置Dialog 全屏

            final Dialog dlg = new Dialog(this, R.style.dialog);
            dlg.setCanceledOnTouchOutside(true);
            dlg.show();
            Window window = dlg.getWindow();
            window.setWindowAnimations(R.style.dialog);
            window.setContentView(R.layout.dlg_application_attendance_guide);
            window.setBackgroundDrawable(new BitmapDrawable());
            //设置alterdialog全屏
            WindowManager windowManager = getWindowManager();
            Display display = windowManager.getDefaultDisplay();
            WindowManager.LayoutParams lp = dlg.getWindow().getAttributes();
            lp.height = (int)(display.getHeight()); //设置宽度
            lp.width = (int)(display.getWidth()); //设置宽度
            dlg.getWindow().setAttributes(lp);

            View bgLayout = window.findViewById(R.id.layout_guide);
            bgLayout.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    new_sign.setVisibility(View.VISIBLE);
                    dlg.dismiss();
                }
            });