Android 更改Dialog的寬高

sendDialog = new Dialog(context,R.style.dialog_send_ir_tip);
        View view = ViewUtil.inflateView(R.layout.tvwall_toast_send_ir_view, context); 

        sendDialog.setContentView(view);

        sendDialog.show(); //show之後才把那個decor添加到了windowmanager中

       sendDialog.getWindow().setLayout(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); //需要在show之後調用